141 results on '"Hye Jung Choo"'
Search Results
2. Unusual Manifestation of Immunoglobulin G4-Related Disease Involving the Upper Arm: A Case Report
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Jin Hee Park, Sun Joo Lee, and Hye Jung Choo
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igg4-related disease ,magnetic resonance imaging ,ultrasonography ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Immunoglobulin G4 (IgG4)-related disease is a rare systemic fibroinflammatory condition characterized by organomegaly or tumefactive lesions associated with lymphoplasmacytic infiltration rich in IgG4 plasma cells. We report a case of IgG4-related disease involving the subcutaneous layer of the left upper arm in a 48-year-old female presenting with an unusual soft tissue mass. US and MRI showed an irregular infiltrative soft tissue mass, indicating possible malignancy or inflammation. We discuss the diagnostic criteria, histopathologic features, radiological features, and treatment of IgG4- related disease.
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- 2023
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3. Comparison of MR Findings between Patients with Septic Arthritis and Acute Gouty Arthritis of the Knee
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Su Young Yun, Hye Jung Choo, Hae Woong Jeong, and Sun Joo Lee
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arthritis ,magnetic resonance imaging ,infectious ,gout ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Purpose To compare the MR findings of septic and acute gouty arthritis of the knee joint. Materials and Methods This retrospective study included patients who underwent knee MRI for septic or gouty arthritis at our hospital between October 2012 and October 2018. The MR findings were analyzed for the presence of bone marrow edema, soft tissue edema, abscess, pattern of synovial thickening (frondlike, lamellated, diffuse linear), maximum thickness of the synovium, and joint effusion volume. The gouty (n = 5) and septic arthritis (n = 10) groups were compared using the Wilcoxon rank-sum test and Fisher’s exact test. Results No statistically significant differences were observed for each item. One patient in the gouty arthritis group and seven in the septic arthritis group had bone marrow edema. Soft tissue abscess formation was only observed in the septic group. The incidence of each synovial thickening pattern was as follows: 100% (diffuse linear) in the gouty arthritis group and 20% (frondlike), 50% (lamellated), and 30% (diffuse linear) in the septic arthritis group. Conclusion Differentiation of gouty arthritis and septic arthritis based on imaging findings is difficult. However, lamellated synovial thickening patterns, bone marrow edema, and soft tissue abscess formation are more commonly observed in patients with septic arthritis than in those with gouty arthritis.
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- 2022
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4. Risk factors and screening timing for developmental dysplasia of the hip in preterm infants
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Ga Won Jeon, Hye Jung Choo, and Yong Uk Kwon
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breech presentation ,developmental dysplasia of the hip ,premature infant ,hip osteoarthritis ,ultrasonography ,Pediatrics ,RJ1-570 - Abstract
Background The delayed diagnosis of developmental dysplasia of the hip (DDH) requires complex treatment and sometimes progresses to hip osteoarthritis. Purpose This study aimed to evaluate the risk factors and screening time for DDH in preterm infants. Methods A total of 155 preterm infants with a gestational age
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- 2022
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5. Avulsion injuries: an update on radiologic findings
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Changwon Choi, Sun Joo Lee, Hye Jung Choo, In Sook Lee, and Sung Kwan Kim
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apophyseal injury ,avulsion fractures ,diagnosis ,cumulative trauma disorders ,athletic injuries ,therapeutics ,Medicine (General) ,R5-920 - Abstract
Avulsion injuries result from the application of a tensile force to a musculoskeletal unit or ligament. Although injuries tend to occur more commonly in skeletally immature populations due to the weakness of their apophysis, adults may also be subject to avulsion fractures, particularly those with osteoporotic bones. The most common sites of avulsion injuries in adolescents and children are apophyses of the pelvis and knee. In adults, avulsion injuries commonly occur within the tendon due to underlying degeneration or tendinosis. However, any location can be involved in avulsion injuries. Radiography is the first imaging modality to diagnose avulsion injury, although advanced imaging modalities are occasionally required to identify subtle lesions or to fully delineate the extent of the injury. Ultrasonography has a high spatial resolution with a dynamic assessment potential and allows the comparison of a bone avulsion with the opposite side. Computed tomography is more sensitive for depicting a tiny osseous fragment located adjacent to the expected attachment site of a ligament, tendon, or capsule. Moreover, magnetic resonance imaging is the best imaging modality for the evaluation of soft tissue abnormalities, especially the affected muscles, tendons, and ligaments. Acute avulsion injuries usually manifest as avulsed bone fragments. In contrast, chronic injuries can easily mimic other disease processes, such as infections or neoplasms. Therefore, recognizing the vulnerable sites and characteristic imaging features of avulsion fractures would be helpful in ensuring accurate diagnosis and appropriate patient management. To this end, familiarity with musculoskeletal anatomy and mechanism of injury is necessary.
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- 2021
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6. CT Follow-Up of Postoperative Bronchopleural Fistula: Risk Factors for Progression to Chronic Complicated Infection
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Ji-Yeon Han, Ki-Nam Lee, Yoo Sang Yoon, Jihyun Lee, Hongyeul Lee, Seok Jin Choi, Hye Jung Choo, Jin Wook Baek, Young Jin Heo, Gi Won Shin, Jinyoung Park, and Dasom Kim
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fistula ,lobectomy ,pneumonectomy ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Purpose We evaluated the risk factors for progression to chronic complicated bronchopleural fistula (BPF) after pulmonary resection using follow-up CT. Materials and Methods We retrospectively reviewed 45 cases with BPF that had undergone pulmonary resection during 2010-2018. We compared the clinical and radiological characteristics of those with complicated BPF (n = 24) and those without complicated (sterilized) BPF (n = 21). The clinical and radiological risk factors for progression to chronic complicated BPF were examined by logistic regression analysis. Results The thickness of the pleural cavity wall (p = 0.022), the size of the pleural cavity (p = 0.029), and the size increase of BPF on follow-up (p = 0.012) were significantly different between the two groups. The risk factors for progression to chronic complicated BPF were age > 70 years (odds ratio, 6.43; 95% confidence interval, 1.2–33.7), the thickness of the cavity wall > 5 mm (odds ratio, 52.5; 95% confidence interval, 5.1–545.4), and an increase in the size of the pleural cavity on follow-up CT (odds ratio, 12.5; 95% confidence interval, 2.1–73.5), only in the univariate analysis. Conclusion The risk factors for progression to chronic complicated BPF can be evaluated using follow-up CT.
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- 2021
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7. Metallic Artifacts on MR Imaging and Methods for Their Reduction
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Hye Jung Choo, Sun Joo Lee, and Young Han Lee
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magnetic resonance imaging ,artifact ,metals ,prostheses and implants ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Metallic artifacts on MR imaging are typically induced by differences in magnetic susceptibility between the metallic implant and surrounding tissue. Conventional techniques for metal artifact reduction require MR machines with low field strength, shift in the frequency-encoding and phase-encoding directions according to the axis of metallic implant, increased receiver bandwidth and matrix, decreased slice thickness, and utilization of the short tau inversion recovery or Dixon method for fat-suppression. Slice-encoding for metal artifact correction and multi-acquisition variable-resonance image combination can dramatically reduce the number of metallic artifacts. However, these sequences have a considerably long acquisition time. Furthermore, the recently developed acceleration techniques including compressed sensing can solve this problem.
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- 2020
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8. Comparison of Ultrasonography Features and K-TIRADS for Isthmic and Lobar Papillary Thyroid Carcinomas: A Single-Center Study
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Yoo Jin Lee, Dong Wook Kim, Gi Won Shin, Jin Young Park, Hye Jung Choo, Ha Kyoung Park, Tae Kwun Ha, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Sung Ho Moon, Ki Jung Ahn, and Hye Jin Baek
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thyroid ,papillary thyroid carcinoma ,isthmic ,ultrasonography ,K-TIRADS ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Objective: This study aimed to compare ultrasonography (US) features and the Korean-Thyroid Imaging Reporting and Data System (K-TIRADS) categories for diagnosing isthmic and lobar papillary thyroid carcinomas (PTC).Methods: From January 2009 to December 2012, 163 patients who underwent thyroid surgery and were confirmed with a post-operative histopathological diagnosis of isthmic PTC were retrospectively included. Fifty-nine patients were excluded because their tumor size was 0.05).Conclusions: K-TIRADS may be useful in the diagnosis of both isthmic and lobar PTC.
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- 2020
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9. Prevalence and Features of Thyroglossal Duct Cyst on Ultrasonography, According to Radioactive Iodine Therapy: A Single-Center Study
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Ji Sun Park, Dong Wook Kim, Gi Won Shin, Jin Young Park, Yoo Jin Lee, Hye Jung Choo, Ha Kyoung Park, Tae Kwun Ha, Do Hun Kim, Soo Jin Jung, Sung Ho Moon, Ki Jung Ahn, and Hye Jin Baek
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thyroglossal duct cyst ,thyroidectomy ,radioactive iodine ablation ,ultrasonography ,prevalence ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Objective: The relationship between radioactive iodine therapy (RIT) and prevalence of thyroglossal duct cysts (TGDC) on ultrasonography (US) has not been reported. We assessed the prevalence and US features of TGDC according to RIT.Methods: From July 2017 to June 2018, 3,146 subjects underwent thyroid or neck US at our center. The presence or absence of TGDCs was prospectively investigated based on real-time US examination. Among the 3,146 subjects, 261 subjects were excluded because of 0.05). The common US features of TGDC were suprahyoid location, ~1 centimeter, and flat-to-ovoid or round shape.Conclusions: RIT may increase the prevalence of TGDCs, particularly in men.
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- 2020
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10. Unexpected Lung and Brain Metastases 9 Years After Thyroid Lobectomy for Follicular Adenoma: A Case Report
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Yoo Jin Lee, Dong Wook Kim, Gi Won Shin, Young Jin Heo, Jin Young Park, Jin Wook Baek, Hye Jung Choo, Young Jun Cho, Ha Kyoung Park, Tae Kwun Ha, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Sung Ho Moon, and Ki Jung Ahn
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thyroid ,papillary thyroid carcinoma ,follicular adenoma ,metastasis ,ultrasonography ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Background: Benign thyroid follicular tumors without histological evidence of carcinoma can metastasize. However, the pathogenesis of metastasis remains unclear. Here, the new proposed terminology, “non-invasive follicular thyroid neoplasm with papillary-like nuclear features” should be considered. We present a case of an encapsulated type of follicular variant of papillary thyroid carcinoma (FVPTC) that exhibited distant lung and brain metastases and was initially diagnosed as follicular adenoma.Case Report: In December 2006, a 64-year-old woman underwent ultrasonography-guided fine-needle aspiration of the right thyroid nodule at our hospital because of a palpable right neck mass. Right lobectomy was performed, and a follicular adenoma was diagnosed. In October 2015, she visited our hospital owing to dry cough and mild dyspnea and underwent computed tomography-guided transthoracic core needle biopsy for the lung nodule owing to probably multiple lung metastasis on chest X-ray and computed tomography. Based on retrospective analysis of the primary thyroid tumor and lung nodule specimen, an encapsulated follicular variant of papillary thyroid carcinoma with lung metastasis was confirmed.Conclusion: We report a case of an encapsulated follicular variant of papillary thyroid carcinoma with unexpected metastasis to the lung 9 years after thyroid surgery in a patient who was initially diagnosed as follicular adenoma. A careful close follow-up with re-examination of the histopathology specimen may be needed in patients who were diagnosed with benign thyroid follicular tumors.
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- 2019
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11. Thyroid Imaging Reporting and Data System for Detecting Diffuse Thyroid Disease on Ultrasonography: A Single-Center Study
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Hye Jin Baek, Dong Wook Kim, Kyeong Hwa Ryu, Gi Won Shin, Jin Young Park, Yoo Jin Lee, Hye Jung Choo, Ha Kyoung Park, Tae Kwun Ha, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Sung Ho Moon, and Ki Jung Ahn
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thyroid ,diffuse thyroid disease ,autoimmune thyroiditis ,ultrasonography ,TIRADS ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Objective: This study aimed to compare the ultrasonography (US) features of diffuse thyroid disease (DTD) and normal thyroid parenchyma (NTP), and to propose a structured imaging reporting system for detecting DTD.Methods: This retrospective study assessed the findings for 270 consecutive patients who underwent thyroid US before thyroid surgery. The following US data were analyzed: DTD-specific features, parenchymal echotexture and echogenicity, anteroposterior diameter, glandular margin, and parenchymal vascularity. Univariate and multivariate analyses with generalized estimating equations were performed to investigate the relationship between US features and DTD. The fitted probability of DTD was analyzed by using a regression equation.Results: Of the 270 patients, there were NTP (n = 193), Hashimoto thyroiditis (n = 24), non-Hashimoto lymphocytic thyroiditis (n = 51), Graves' disease (n = 1), and diffuse hyperplasia (n = 1). The following US features were significantly associated with DTD: decreased or increased parenchymal echogenicity, coarse parenchymal echotexture, increased anteroposterior diameter, lobulated glandular margin, and increased parenchymal vascularity. Of these, coarse parenchymal echotexture was the most significant independent predictor of DTD. The numbers of abnormal US features were positively correlated with the fitted probability and risk of DTD. The diagnostic indices were highest when the chosen cut-off criterion was category III with the largest Az value (0.867, 95% confidence interval: 0.820–0.905), yielding a sensitivity of 68.8%, specificity of 92.2%, positive predictive value of 77.9%, negative predictive value of 88.1%, and accuracy of 85.6% (p < 0.001).Conclusions: Our sonographic reporting and data system may be useful for detecting DTD.
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- 2019
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12. Retention of Gadolinium in Cerebrospinal Fluid and Decreased Renal Function: A Case Report
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Kyeong Sik Park, Young Jin Heo, Hae Woong Jeong, Jin Wook Baek, Hye Jung Choo, and Cheon Sik Jung
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gadolinium ,subarachnoid space ,cerebrospinal fluid ,renal insufficiency ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
A gadolinium-based contrast is the preferred agent when differentiating acute neurological diseases. Since the renal route is the main pathway for excretion of gadolinium chelates, prolonged extracellular distribution of gadolinium has previously been reported in dialysis-dependent patients. Hence, gadolinium-based contrast agents are used cautiously in patients with known renal disease. Retention of gadolinium manifests as increased fluid-attenuated inversion recovery (FLAIR) signal intensity in the subarachnoid space, leading to diagnostic errors. Here, we describe a patient who presented to our emergency room with an acute cerebral infarction. Enhanced brain magnetic resonance imaging performed 2 days later revealed high signal intensity in the cerebrospinal fluid spaces on follow-up FLAIR images.
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- 2017
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13. Ultrasonography of the ankle joint
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Jung Won Park, Sun Joo Lee, Hye Jung Choo, Sung Kwan Kim, Heui-Chul Gwak, and Sung-Moon Lee
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Ultrasonography ,Ankle ,Anatomy ,Tendons ,Ligaments ,Nerves ,Medical technology ,R855-855.5 - Abstract
Ankle disorders are a relatively common pathological condition, and ankle injuries account for approximately 14% of sports-related orthopedic emergency visits. Various imaging modalities can be used to make a diagnosis in cases of ankle pain; however, ultrasound (US) has several benefits for the evaluation of ankle pain, especially in the tendons, ligaments, and nerves of the ankle. The purpose of this article is to review the common causes of ankle pathology, with particular reference to US features. In addition, the importance of a dynamic evaluation and a stress test with US is emphasized.
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- 2017
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14. Ultrasound detection of incidental diffuse parotid disease: A single-center study.
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Do Hun Kim, Dong Wook Kim, Jin Young Park, Yoo Jin Lee, Hye Jung Choo, Tae Kwun Ha, Soo Jin Jung, Ji Sun Park, Sung Ho Moon, Ki Jung Ahn, and Hye Jin Baek
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Medicine ,Science - Abstract
In this study, we compared ultrasound (US) features between normal parotid parenchyma (NPP) and incidental diffuse parotid disease (DPD). From January 2008 to December 2017, 180 patients underwent neck US before parotid surgery at our hospital. From these, 82 were excluded because of the lack of histopathological data concerning the parotid parenchyma or inadequate US images. A single radiologist blinded to the clinicoserological data and histopathological results, retrospectively investigated all US features and categorizations for the parotid glands using a picture archiving and communication system. Retrospective histopathological analysis of the parotid parenchyma was performed by a single pathologist. On the basis of the histopathological analyses, the 98 patients were divided into NPP (n = 70) and DPD (n = 28) groups. Among US features, parenchymal echogenicity and echotexture showed statistically significant differences between the two groups (p < 0.0001), whereas the gland size, margin, and vascularity showed no significant differences (p > 0.05). The US-based categorization significantly differentiated between NPP and DPD (p < 0.0001), and receiver operating characteristic curve analysis revealed that US categorization based on ≥2 abnormal US features showed the best diagnostic performance for detecting DPD. Thus, US can aid in differentiating DPD from NPP.
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- 2019
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15. Comparison of Postoperative Neck Pain and Discomfort, Swallowing Difficulty, and Voice Change After Conventional Open, Endoscopic, and Robotic Thyroidectomy: A Single-Center Cohort Study
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Tae Kwun Ha, Dong Wook Kim, Ha Kyoung Park, Gi Won Shin, Young Jin Heo, Jin Wook Baek, Yoo Jin Lee, Hye Jung Choo, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Sung Ho Moon, Ki Jung Ahn, Hye Jin Baek, and Taewoo Kang
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thyroid ,surgery ,robotic ,endoscopic ,conventional ,complication ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Background: The objective of this study was to compare the postoperative neck pain and discomfort, swallowing difficulty, and voice change after conventional open thyroidectomy (COT), endoscopic thyroidectomy (ET), or robotic thyroidectomy (RT) performed by a single surgeon.Methods: From January 2013 to December 2017, 254 patients underwent COT, ET, or RT performed by a single surgeon and completed a postoperative symptom survey conducted in the outpatient clinic by three nurses. The survey collected information on postoperative neck pain and discomfort, swallowing difficulty, and voice change.Results: Of the 254 patients, 169 underwent COT, 32 underwent ET, and 53 underwent RT. The mean age in the COT, ET, and RT groups was 50.1, 44.5, and 41.6 years, respectively. The mean interval between thyroidectomy and survey in the COT, ET, and RT groups was 42.7, 50.2, and 9.2 months, respectively. Postoperative neck pain was significantly higher in the ET and RT groups than in the COT group (p = 0.026). The average neck impairment index score in the RT group was significantly higher than that in the COT group (p < 0.001). There were no significant differences in pain scale scores, swallowing difficulty, swallowing impairment index, voice change, and voice hand index among the three groups.Conclusions: There were no significant differences in postoperative voice change or swallowing difficulty among the COT, ET, and RT groups, whereas neck pain and discomfort were more common after ET and RT than COT.
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- 2018
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16. Diagnostic accuracy of computed tomography for differentiating diffuse thyroid disease from normal thyroid parenchyma: A multicenter study.
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Hye Jin Baek, Dong Wook Kim, Yoo Jin Lee, Hye Jung Choo, Hye Shin Ahn, Hyun Kyung Lim, and Ji Hwa Ryu
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Medicine ,Science - Abstract
This study aimed to assess the diagnostic performance of computed tomography (CT) for differentiating diffuse thyroid disease (DTD) from normal thyroid parenchyma (NTP) using multicenter data. Between January 2016 and June 2016, 229 patients underwent preoperative neck CT and subsequent thyroid surgery at five participating institutions. The neck CT images of each patient were retrospectively reviewed and classified into the following four categories: no DTD, indeterminate, suspicious for DTD, and DTD. The results of the CT image evaluations were compared with the histopathological results to determine the diagnostic accuracy of CT at each institution. According to the histopathological results, there were NTP (n = 151), Hashimoto thyroiditis (n = 24), non-Hashimoto lymphocytic thyroiditis (n = 47), and diffuse hyperplasia (n = 7). The CT categories of the 229 patients were "no DTD" in 89 patients, "indeterminate" in 40 patients, "suspicious for DTD" in 42 patients, and "DTD" in 58 patients. The presence of two or more CT features of DTD, which was classified as "suspicious for DTD" by all radiologists, had the largest area under the receiver-operating characteristic curve (Az = 0.820; 95% confidence interval: 0.764, 0.868), with sensitivity of 85.9% and specificity of 78.2%. However, no statistical significance between readers' experience and their diagnostic accuracy was found. In conclusion, evaluations of CT images are helpful for differentiating DTD from NTP.
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- 2018
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17. Utility of including BRAF mutation analysis with ultrasonographic and cytological diagnoses in ultrasonography-guided fine-needle aspiration of thyroid nodules.
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Da Som Kim, Dong Wook Kim, Young Jin Heo, Jin Wook Baek, Yoo Jin Lee, Hye Jung Choo, Young Mi Park, Ha Kyoung Park, Tae Kwun Ha, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Ki Jung Ahn, Hye Jin Baek, and Taewoo Kang
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Medicine ,Science - Abstract
This study investigated the role of BRAF mutation analysis in thyroid fine-needle aspiration (FNA) samples compared to ultrasonographic and cytological diagnoses. A total 316 patients underwent ultrasonography (US)-guided FNA with BRAFV600E mutation analysis to diagnose thyroid nodules. One hundred sixteen patients with insufficient US images (n = 6), follow-up loss (n = 43), or unknown final diagnosis (n = 67) were excluded from the study. Comparisons between US diagnoses, cytological diagnoses, and BRAF mutation analysis were performed. Of 200 thyroid nodules, there was US diagnosis with 1 false negative and 11 false positive cases, cytological diagnosis with 10 false negative and 2 false positive cases, and BRAFV600E mutation analysis with 19 false negative and 2 false positive cases. The sensitivity, specificity, positive and negative predictive values, and accuracy of BRAFV600E mutation analysis were 83.2%, 98.1%, 97.5%, 86.6%, and 91%, respectively. Of the 18 nodules with Bethesda category III, 9 were true positive, 6 were true negative, 3 was a false negative, and none were false positive on BRAF mutation analysis. In conclusion, we recommend that BRAFV600E mutation analysis only be performed for evaluating thyroid nodules with Bethesda category III, regardless of US diagnosis.
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- 2018
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18. Ultrasonographic features of vascular closure devices: initial and 6-month follow-up results
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Hye Jung Choo, Hae Woong Jeong, Jin Young Park, Sung-Chul Jin, Sung Tae Kim, Jung Hwa Seo, Sun Joo Lee, and Young Mi Park
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Vascular access devices ,Hemostasis ,Ultrasonography ,Medical technology ,R855-855.5 - Abstract
Purpose: This study aimed to evaluate the ultrasonographic findings for various types of vascular closure devices (VCDs) immediately after the angiographic procedure and at 6-month follow-up. Methods: We included 18 VCDs including Angio-Seal (n=4), FemoSeal (n=8), ExoSeal (n=3), Perclose (n=2), and StarClose (n=1) in this study. Four patients were implanted with 2 VCDs at the each side of bilateral femoral arteries, while the remaining 8 patients were inserted 1 VCD at the right femoral artery. Ultrasonography was performed within 10 days and at approximately 6 months after the angiographic procedure. Ultrasonographic morphology of the attached VCD and its relationship with the arterial wall were analyzed. Results: Initial ultrasonography revealed the attached VCD as the relevant unique structure with successful deployment and hemostasis. Follow-up ultrasonography demonstrated partial absorption of hemostatic materials in cases of Angio-Seal (n=3), FemoSeal (n=5), and ExoSeal (n=3), changes in the soft tissue surrounding the femoral artery in case of Angio-Seal (n=1), arterial intimal hyperplasia in cases of FemoSeal (n=3), and no gross changes as compared with the initial ultrasonographic findings in cases of Perclose (n=2) and StarClose (n=1). Conclusion: Initial ultrasonographic evaluation reflected the unique structure of each VCD, with most of them being easily distinguishable. Follow-up ultrasonography revealed various changes in the affected vessels.
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- 2014
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19. Preoperative Embolization of Cerebellar Hemangioblastoma with Onyx: Report of Three Cases
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Gi Won Shin, Hae Woong Jeong, Jeong Hwa Seo, Sung Tae Kim, Hye Jung Choo, and Sun Joo Lee
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hemangioblastoma ,endovascular procedure ,embolization/therapy ,onyx ,Medicine (General) ,R5-920 ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Hemangioblastoma is a benign and highly vascular tumor. Complete surgical resection of highly vascular tumor such as hemangioblastoma may be challenging due to excessive bleeding. Preoperative embolization of these lesions may decrease the intraoperative blood loss and facilitate excision. We report three cases of cerebellar hemangioblastomas that were embolized using Onyx.
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- 2014
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20. Comparison of the Modified Bröstrom Repair Technique with and without Augmentation Using Suture Tape for Chronic Ankle Instability
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Heui-Chul Gwak, Soo-Hwan Jung, Jung-Han Kim, Dae-Hyun Park, Hye-Jung Choo, and Dae-Yoo Kim
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- 2022
21. Avulsion injuries: an update on radiologic findings
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Chang Won Choi, Sun Joo Lee, In Sook Lee, Sung Kwan Kim, and Hye Jung Choo
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medicine.medical_specialty ,apophyseal injury ,Medicine (General) ,business.industry ,diagnosis ,Radiography ,Tendinosis ,Soft tissue ,Review Article ,avulsion fractures ,medicine.disease ,Tendon ,Avulsion ,athletic injuries ,medicine.anatomical_structure ,R5-920 ,medicine ,Ligament ,therapeutics ,cumulative trauma disorders ,Radiology ,Avulsion injury ,business ,Pelvis - Abstract
Avulsion injuries result from the application of a tensile force to a musculoskeletal unit or ligament. Although injuries tend to occur more commonly in skeletally immature populations due to the weakness of their apophysis, adults may also be subject to avulsion fractures, particularly those with osteoporotic bones. The most common sites of avulsion injuries in adolescents and children are apophyses of the pelvis and knee. In adults, avulsion injuries commonly occur within the tendon due to underlying degeneration or tendinosis. However, any location can be involved in avulsion injuries. Radiography is the first imaging modality to diagnose avulsion injury, although advanced imaging modalities are occasionally required to identify subtle lesions or to fully delineate the extent of the injury. Ultrasonography has a high spatial resolution with a dynamic assessment potential and allows the comparison of a bone avulsion with the opposite side. Computed tomography is more sensitive for depicting a tiny osseous fragment located adjacent to the expected attachment site of a ligament, tendon, or capsule. Moreover, magnetic resonance imaging is the best imaging modality for the evaluation of soft tissue abnormalities, especially the affected muscles, tendons, and ligaments. Acute avulsion injuries usually manifest as avulsed bone fragments. In contrast, chronic injuries can easily mimic other disease processes, such as infections or neoplasms. Therefore, recognizing the vulnerable sites and characteristic imaging features of avulsion fractures would be helpful in ensuring accurate diagnosis and appropriate patient management. To this end, familiarity with musculoskeletal anatomy and mechanism of injury is necessary.
- Published
- 2021
22. Comparison of the Quality of Various Polychromatic and Monochromatic Dual-Energy CT Images with or without a Metal Artifact Reduction Algorithm to Evaluate Total Knee Arthroplasty
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Ji Yeon Han, Young Jin Heo, Dong Wook Kim, Yoo Jin Lee, Hye Jung Choo, Jin Wook Baek, and Sun Joo Lee
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Image Series ,Male ,Metal artifact reduction ,Image quality ,Total knee arthroplasty ,Prosthesis ,A-weighting ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,Metal Artifact ,0302 clinical medicine ,Quality (physics) ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Arthroplasty, Replacement, Knee ,Aged ,business.industry ,Musculoskeletal Imaging ,Weighting ,Dual-energy CT ,Metals ,030220 oncology & carcinogenesis ,Virtual monochromatic imaging ,Radiographic Image Interpretation, Computer-Assisted ,Original Article ,Female ,Monochromatic color ,business ,Artifacts ,Tomography, X-Ray Computed ,Algorithm ,Algorithms - Abstract
OBJECTIVE: To compare the quality of various polychromatic and monochromatic images with or without using an iterative metal artifact reduction algorithm (iMAR) obtained from a dual-energy computed tomography (CT) to evaluate total knee arthroplasty. MATERIALS AND METHODS: We included 58 patients (28 male and 30 female; mean age [range], 71.4 [61-83] years) who underwent 74 knee examinations after total knee arthroplasty using dual-energy CT. CT image sets consisted of polychromatic image sets that linearly blended 80 kVp and tin-filtered 140 kVp using weighting factors of 0.4, 0, and -0.3, and monochromatic images at 130, 150, 170, and 190 keV. These image sets were obtained with and without applying iMAR, creating a total of 14 image sets. Two readers qualitatively ranked the image quality (1 [lowest quality] through 14 [highest quality]). Volumes of high- and low-density artifacts and contrast-to-noise ratios (CNRs) between the bone and fat tissue were quantitatively measured in a subset of 25 knees unaffected by metal artifacts. RESULTS: iMAR-applied, polychromatic images using weighting factors of -0.3 and 0.0 (P-0.3i and P0.0i, respectively) showed the highest image-quality rank scores (median of 14 for both by one reader and 13 and 14, respectively, by the other reader; p < 0.001). All iMAR-applied image series showed higher rank scores than the iMAR-unapplied ones. The smallest volumes of low-density artifacts were found in P-0.3i, P0.0i, and iMAR-applied monochromatic images at 130 keV. The smallest volumes of high-density artifacts were noted in P-0.3i. The CNRs were best in polychromatic images using a weighting factor of 0.4 with or without iMAR application, followed by polychromatic images using a weighting factor of 0.0 with or without iMAR application. CONCLUSION: Polychromatic images combined with iMAR application, P-0.3i and P0.0i, provided better image qualities and substantial metal artifact reduction compared with other image sets.
- Published
- 2021
23. Is Free Breathing Possible During Computed Tomography-Guided Percutaneous Transthoracic Lung Biopsy? The Clinical Experience in 585 Cases
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Ji-Yeon Han, Ki-Nam Lee, Seok Jin Choi, Jin Wook Baek, Dasom Kim, Hongyeul Lee, Yoo Sang Yoon, Hye Jung Choo, Young Jin Heo, Jinyoung Park, and Dong Hyun Kim
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Image-Guided Biopsy ,Male ,Lung Neoplasms ,Humans ,Radiology, Nuclear Medicine and imaging ,Radiography, Interventional ,Tomography, X-Ray Computed ,Lung ,Aged ,Retrospective Studies - Abstract
The aim of the study was to retrospectively evaluate the safety and accuracy of computed tomography (CT)-guided percutaneous transthoracic needle biopsy (PTNB) of lung lesions during quiet breathing.We investigated the diagnostic performance and complication rate of 585 procedures in 563 patients (357 men; mean age, 67.7 years), who underwent CT-guided PTNBs during quiet breathing, aided by a respiratory targeting technique from May 2017 to July 2019. Differences between the cases with and without respiratory targeting were analyzed. Logistic regression analyses were performed to examine the development of pneumothorax and hemoptysis.Percutaneous transthoracic needle biopsy samples were successfully obtained in 574 of 585 procedures (98.1%). Final diagnoses included: 410 malignant cases, 119 benign cases, and 45 indeterminate cases. The sensitivity, specificity, and accuracy of diagnosis were 94.4%, 100%, and 95.7%, respectively. Use of respiratory targeting was associated with younger age (P = 0.004), smaller lesion size (P0.001), peripheral location (P = 0.003), shorter distance from the diaphragm (P0.001), lower lobe location (P0.001), prone position (P = 0.004), and visible motion artifact (P0.001). Pneumothorax and hemoptysis rates were 22.9% and 7.9%, respectively. Upon multivariate analysis, emphysema (P = 0.002) was the only independent risk factor for pneumothorax, whereas distance from the pleura greater than 2 cm (P0.001), tissue sampling 3 times or more (P = 0.003), and a less experienced operator (P0.001) were risk factors for hemoptysis.Computed tomography-guided PTNB during quiet breathing with respiratory targeting yielded high diagnostic performance with a slightly higher rate of complications. Free-breathing PTNB can be applied in clinical practice, based on lesion location and risk factors for complications.
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- 2022
24. Computed tomography arthrography of the shoulder with tin filter-based spectral shaping at 100 kV and 140 kV
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Dong Wook Kim, Da Som Kim, Sun Joo Lee, Yun-Seok Choi, Ji-Yeon Han, and Hye Jung Choo
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Adult ,Male ,chemistry.chemical_element ,Computed tomography ,Radiation Dosage ,Spectral shaping ,Optics ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Arthrography ,Aged ,Retrospective Studies ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,Shoulder Joint ,business.industry ,Reproducibility of Results ,General Medicine ,Middle Aged ,Radiation exposure ,chemistry ,Tin ,Filter (video) ,Radiographic Image Interpretation, Computer-Assisted ,Female ,Ct arthrography ,Tomography, X-Ray Computed ,business - Abstract
Background Tin filter-based spectral shaping has been used for low-dose and ultra-low-dose computed tomography (CT) in several body parts. However, studies of shoulder CT arthrography with spectral shaping are limited. Purpose To investigate image quality and radiation dose of shoulder CT arthrography with tin filter-based spectral shaping at 100 kV (Sn 100 kV) and 140 kV (Sn 140 kV) in comparison with the conventional protocol. Material and Methods Ninety-nine shoulder CT arthrographies with protocols of Sn 100 kV (n = 32), Sn 140 kV (n = 25), and conventional 120 kV (n = 42) were retrospectively evaluated. Qualitative image quality, CT attenuations of intra-articular contrast mixture and tissues, background noise, contrast-to-noise ratios (CNRs), and figures of merit were assessed. Radiation doses were compared. Results CT arthrographies with Sn 100 kV and Sn 140 kV yielded approximately 70% and 60% radiation dose reduction, respectively, compared with the conventional 120 kV ( P Conclusion Shoulder CT arthrography with Sn 100 kV substantially reduced radiation dose and image noise and maintained image contrast, compared with the conventional protocol.
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- 2020
25. Magnetic Resonance Imaging of Ankle Syndesmotic Ligament Injuries: Comparison of Three-dimensional Isotropic Intermediate-weighted Fast Spin Echo with Conventional Two-dimensional Imaging
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Heui-Chul Gwak, Hye Jung Choo, Sun Joo Lee, DH Park, MW Kim, and JW Park
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Two dimensional imaging ,Nuclear magnetic resonance ,medicine.anatomical_structure ,medicine.diagnostic_test ,business.industry ,Isotropy ,Ligament ,medicine ,Radiology, Nuclear Medicine and imaging ,Magnetic resonance imaging ,Fast spin echo ,Ankle ,business - Published
- 2020
26. Usefulness of pointwise encoding time reduction with radial acquisition sequence in subtraction-based magnetic resonance angiography for follow-up of the Neuroform Atlas stent-assisted coil embolization for cerebral aneurysms
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Young Jin Heo, Sung-Chul Jin, Ji-Yeon Han, Sung Tae Kim, Dong-Hyun Kim, Young Gyun Jeong, Hae Woong Jeong, Hye Jung Choo, and Jin Wook Baek
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Adult ,Male ,medicine.medical_treatment ,Contrast Media ,Magnetic resonance angiography ,Time ,Atlas (anatomy) ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Reduction (orthopedic surgery) ,Aged ,Retrospective Studies ,Coil embolization ,Pointwise ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,business.industry ,Subtraction ,Angiography, Digital Subtraction ,Stent ,Intracranial Aneurysm ,General Medicine ,Digital subtraction angiography ,Middle Aged ,Image Enhancement ,Embolization, Therapeutic ,Cerebral Angiography ,Treatment Outcome ,medicine.anatomical_structure ,Female ,Stents ,business ,Nuclear medicine ,Magnetic Resonance Angiography ,Follow-Up Studies - Abstract
Background Although time-of-flight magnetic resonance angiography (TOF-MRA) is widely used, it has limited usefulness for follow-up after stent-assisted coil embolization. Contrast-enhanced MRA (CE-MRA) and ultrashort echo time MRA have been suggested as alternative methods for visualization after this procedure. Purpose To compare efficacy and usefulness of pointwise encoding time reduction with radial acquisition (PETRA) sequence in subtraction-based MRA (qMRA), TOF-MRA, and CE-MRA during the follow-up after Neuroform Atlas stent-assisted coil embolization for intracranial aneurysms. Material and Methods This retrospective study included 23 patients with 24 aneurysms who underwent Neuroform Atlas stent-assisted coil embolization for intracranial aneurysms. All patients were evaluated with PETRA qMRA, TOF-MRA, and CE-MRA at the same follow-up session. The flow within stents, occlusion status, and presence of pseudo-stenosis were evaluated; inter-observer and intermodality agreements for the three methods were also graded. Results The mean score for flow visualization within the stents was significantly higher for PETRA qMRA and CE-MRA than for TOF-MRA (although no significant difference was found between PETRA qMRA and CE-MRA). Good inter-observer agreement was observed for each modality. PETRA qMRA and CE-MRA were more consistent with digital subtraction angiography (DSA) than TOF-MRA for aneurysm occlusion status. The intermodality agreement was better between PETRA qMRA and DSA, and between CE-MRA and DSA, than between DSA and TOF-MRA. Pseudo-stenosis was most frequently observed in TOF-MRA, followed by CE-MRA and PETRA qMRA. Conclusion PETRA qMRA is useful for evaluating the parent artery patency and occlusion status of aneurysms after Neuroform Atlas stent-assisted coil embolization.
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- 2020
27. Efficacy of Temporal Fixation Using Threaded Trans-Calcaneal Pin in Patients with Ankle Fracture-Dislocation or Tibia Pilon Fractures
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Chul-Soon Park, Yong-Uk Kwon, Chang-Rak Lee, Dae-Hyun Park, Jung-Han Kim, Heui-Chul Gwak, and Hye Jung Choo
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Orthodontics ,Fixation (surgical) ,External fixation ,medicine.anatomical_structure ,Ankle injury ,business.industry ,medicine.medical_treatment ,medicine ,In patient ,Tibia ,Ankle ,business - Published
- 2020
28. Comparison of Prevalence and Ultrasonography Features of Thyroglossal Duct Cyst in Adults According to Radioactive Iodine Ablation
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Do Hun Kim, Tae Kwun Ha, Ji Sun Park, Gi Won Shin, Soo Jin Jung, Sung Ho Moon, Dong Wook Kim, Hye Jin Baek, Ha Kyoung Park, Ki Jung Ahn, Hye Jung Choo, Jin Young Park, and Yoo Jin Lee
- Subjects
Ablation Techniques ,Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Thyroglossal duct ,Prevalence ,Thyroid Gland ,030204 cardiovascular system & hematology ,Iodine Radioisotopes ,03 medical and health sciences ,0302 clinical medicine ,Clinical Research ,medicine ,Carcinoma ,Humans ,Cyst ,Thyroid Neoplasms ,Child ,Ultrasonography ,Aged ,Retrospective Studies ,Radioisotopes ,Aged, 80 and over ,business.industry ,Thyroid ,Infant ,Retrospective cohort study ,General Medicine ,Middle Aged ,Ablation ,medicine.disease ,Carcinoma, Papillary ,Thyroglossal Cyst ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Child, Preschool ,Thyroidectomy ,Female ,Radiology ,business ,Tomography, X-Ray Computed ,Iodine - Abstract
BACKGROUND This study aimed to evaluate the prevalence of thyroglossal duct cysts (TGDCs) on ultrasonography (US) and US features of TGDCs in adults, and to assess whether the prevalence or size of TGDCs increases after radioactive iodine ablation (RIA). MATERIAL AND METHODS Between July and December 2018, 2820 patients underwent thyroid or neck US examination, performed by 2 radiologists, at our center. On the basis of real-time US, the presence or absence of TGDCs was prospectively investigated by 2 radiologists. Among the 2820 patients, 54 patients who were19 years of age or had a radiation therapy history to the neck were excluded. Eventually, 2766 patients were included. RESULTS Of the 2766 patients, 160 (5.8%) showed a TGDC on US. The mean size of TGDCs in RIA history (+) (n=36) and RIA history (-) (n=124) groups was 0.92±0.41 cm and 0.86±0.45 cm, respectively. There was no significant difference in size of TGDCs between RIA history (+) and RIA history (-) groups (p=0.684). Between the TGDC (+) and TGDC (-) groups, there was no significant difference in patient age, gender, reason for thyroid/neck US, type of thyroid surgery, and session number and application/no application of RIA (p0.05). The prevalence rate of TGDCs in radiologist A and B was 4.9% (70/1427) and 6.7% (90/1339), respectively. TGDCs were more common in the suprahyoid neck, and the common shapes of TGDCs were flat-to-ovoid and round. CONCLUSIONS RIA may not be associated with the prevalence or enlargement of TGDCs.
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- 2019
29. Asian Oceanian Radiology Forum 2018: International Education of Radiology in Asian Oceanian Countries
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Kyongmin Sarah Beck, Su Min Ha, Kichang Han, Whal Lee, Seung Chai Jung, and Hye Jung Choo
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medicine.medical_specialty ,Asia ,business.industry ,education ,Oceania ,Congresses as Topic ,International education ,Editorial ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Radiology ,business ,International cooperation ,health care economics and organizations ,Societies, Medical - Abstract
According to the reports presented at the Fourth Asian Oceanian Radiology Forum (AORF) 2018, organized by the Korean Society of Radiology during the Korean Congress of Radiology in September 2018 in Seoul, there is an increasing demand for the Asian Oceanian Society of Radiology and its member societies for international education in radiology in the Asian Oceanian region. In AORF 2018, the national delegates of the Asian Oceanian radiological partner societies primarily discussed their societies' activities and current status of international education in radiology.
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- 2019
30. Comparison of MR Findings between Patients with Septic Arthritis and Acute Gouty Arthritis of the Knee
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Su Young Yun, Hye Jung Choo, Hae Woong Jeong, and Sun Joo Lee
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Radiology, Nuclear Medicine and imaging - Abstract
To compare the MR findings of septic and acute gouty arthritis of the knee joint.This retrospective study included patients who underwent knee MRI for septic or gouty arthritis at our hospital between October 2012 and October 2018. The MR findings were analyzed for the presence of bone marrow edema, soft tissue edema, abscess, pattern of synovial thickening (frondlike, lamellated, diffuse linear), maximum thickness of the synovium, and joint effusion volume. The gouty (No statistically significant differences were observed for each item. One patient in the gouty arthritis group and seven in the septic arthritis group had bone marrow edema. Soft tissue abscess formation was only observed in the septic group. The incidence of each synovial thickening pattern was as follows: 100% (diffuse linear) in the gouty arthritis group and 20% (frondlike), 50% (lamellated), and 30% (diffuse linear) in the septic arthritis group.Differentiation of gouty arthritis and septic arthritis based on imaging findings is difficult. However, lamellated synovial thickening patterns, bone marrow edema, and soft tissue abscess formation are more commonly observed in patients with septic arthritis than in those with gouty arthritis.급성 통풍성 관절염과 패혈성 관절염의 자기공명영상 소견 차이를 알아본다.2012년 10월부터 2018년 10월까지 패혈성 혹은 통풍성 관절염으로 확진된 자기공명영상을 촬영한 환자를 대상으로 연구하였다. 패혈성 관절염과 급성 통풍성 관절염의 자기공명영상 소견으로 골수부종, 연부조직 부종, 농양 형성 여부, 활액막 비후 양상(엽상체, 층판, 미만성 선형 모양), 활액막 최대 두께와 관절액 양을 평가하였다. 통풍성 관절염(5명)과 패혈성 관절염(10명)을 윌콕슨 순위합 검정과 피셔 정확 검정으로 비교하였다.자기공명영상으로 평가된 각 소견은 두 군 사이에 유의한 통계학적 차이는 보이지 않았다. 골수부종은 통풍성 관절염군에서 1건, 패혈성 관절염군에서 7건 관찰되었다. 연부조직 농양은 패혈성 관절염군에서만 관찰되었다. 활액막 비후양상은 통풍성 관절염군은 모두 미만성 선형 모양(100%), 패혈성 관절염군은 엽상체 모양(20%), 층판 모양(50%), 미만성 선형 모양(30%)으로 나타났다.통풍성 관절염과 패혈성 관절염은 자기공명영상 소견만으로 감별은 어려울 것으로 생각된다. 그러나 층판 모양 활액막 비후나 골수부종, 연부조직 농양의 경우 패혈성 관절염에서더 흔히 보였다.
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- 2021
31. Risk factors and screening timing for developmental dysplasia of the hip in preterm infants
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Yong-Uk Kwon, Hye Jung Choo, and Ga Won Jeon
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medicine.medical_specialty ,Obstetrics ,business.industry ,Incidence (epidemiology) ,Birth weight ,Postmenstrual Age ,Gestational age ,Pediatrics ,Breech presentation ,Pediatrics, Perinatology and Child Health ,medicine ,Etiology ,Presentation (obstetrics) ,Risk factor ,business - Abstract
Background: The delayed diagnosis of developmental dysplasia of the hip (DDH) requires complex treatment and sometimes progresses to hip osteoarthritis.Purpose: This study aimed to evaluate the risk factors and screening time for DDH in preterm infants.Methods: A total of 155 preterm infants with a gestational age
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- 2021
32. Utility of Preoperative Ultrasonography in Transferred Patients with Suspicious Malignancy on Ultrasonography-Guided Fine-Needle Aspiration Cytology of Thyroid Nodules: A Single-Center Retrospective Study
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Sung Ho Moon, Hye Jung Choo, Gi Won Shin, Do Hun Kim, Ji Sun Park, Tae Kwun Ha, Ha Kyoung Park, Jin Young Park, Ki Jung Ahn, Dong Wook Kim, Hye Jin Baek, Young Jun Cho, Soo Jin Jung, Taewoo Kang, and Yoo Jin Lee
- Subjects
Adult ,Male ,Patient Transfer ,Thyroid nodules ,medicine.medical_specialty ,Adolescent ,endocrine system diseases ,Adenoma ,Biopsy, Fine-Needle ,Thyroid Gland ,030204 cardiovascular system & hematology ,Malignancy ,Preoperative care ,Thyroid carcinoma ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Clinical Research ,Neoplasms ,Cytology ,Preoperative Care ,Biopsy ,Humans ,Medicine ,Thyroid Neoplasms ,Thyroid Nodule ,Aged ,Retrospective Studies ,Ultrasonography ,medicine.diagnostic_test ,business.industry ,Thyroid ,General Medicine ,Middle Aged ,medicine.disease ,Carcinoma, Papillary ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Female ,Radiology ,business ,Procedures and Techniques Utilization - Abstract
BACKGROUND This study aimed to assess the utility and characteristics of preoperative ultrasonography (US) in patients transferred to referral hospitals from local clinics with a diagnosis of malignancy on US-guided fine-needle aspiration cytology of thyroid nodules. MATERIAL AND METHODS From January 2018 to June 2018, 109 transferred patients underwent preoperative US in our hospital for suspected thyroid malignancy on cytological analysis after US-guided fine-needle aspiration of thyroid nodules in local clinics. Preoperative US was performed by a single radiologist in all patients. Among them, 6 were excluded from the study because of refusal of thyroid surgery. Preoperative US and histopathological results were compared in all patients. RESULTS After thyroid surgery, pathological examination revealed papillary thyroid carcinoma (PTC) (n=98), follicular adenoma (n=1), and nodular hyperplasia (n=4). Of the 103 patients, 91 exhibited suspicious US findings on the preoperative US, whereas 12 did not. In the 91 patients with suspicious US findings, PTC (n=90) and follicular adenoma (n=1) were confirmed after thyroid surgery. In the 12 patients with no suspicious US findings, PTC (n=8) and nodular hyperplasia (n=4) were confirmed after thyroid surgery. On repeat analysis of the cytological slides of the 4 nodular hyperplasia cases from the local clinics, Bethesda category II (n=1) and III (n=3) were determined. CONCLUSIONS In the transferred patients with a malignant cytology, preoperative US might be helpful to detect false-positive cytology cases.
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- 2019
33. Phyllodes Tumour of the Breast: Differentiation of Histological Grade by Ultrasonography
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Hye Jung Kim, Sun Joo Lee, Hye Jin Baek, Dong Wook Kim, Ji Hwa Ryu, Hye Jung Choo, Gi Won Shin, Jun Ho Park, and Young Mi Park
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medicine.medical_specialty ,business.industry ,Medicine ,Radiology, Nuclear Medicine and imaging ,Radiology ,Ultrasonography ,business - Published
- 2019
34. Dual-energy CT angiography-derived virtual non-contrast images for follow-up of patients with surgically clipped aneurysms: a retrospective study
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Young Jin Heo, Hae Woong Jeong, Hye Jung Choo, Sung Tae Kim, Jin Wook Baek, Gi Won Shin, Young Gyun Jeong, Hyun Seok Jung, Ji Young Lee, and Su Young Yun
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Adult ,Male ,Computed Tomography Angiography ,Image quality ,Contrast Media ,Sensitivity and Specificity ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Positive predicative value ,Centrum semiovale ,Image noise ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Aged ,Retrospective Studies ,Neuroradiology ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Surgical clipping ,Intracranial Aneurysm ,Retrospective cohort study ,Middle Aged ,musculoskeletal system ,Angiography ,Female ,Neurology (clinical) ,Artifacts ,Cardiology and Cardiovascular Medicine ,business ,Nuclear medicine ,030217 neurology & neurosurgery - Abstract
To evaluate the diagnostic performance, image quality, artifacts, and radiation doses of virtual non-contrast (VNC) images, relative to true non-contrast (TNC) images, in patients with surgically clipped aneurysms. Seventy-six patients who underwent unenhanced computed tomography (CT) and dual-energy (DE)-CT angiography after surgical clipping of 85 intracranial aneurysms were included in the study. Diagnostic performances of VNC and TNC images were compared with respect to sensitivity, specificity, and positive and negative predictive values. The results of quantitative and qualitative analyses were compared between VNC and TNC images. Radiation doses were also compared between VNC and TNC images. Diagnostic performance of VNC images was lower than that of TNC images; however, addition of contrast-enhanced images improved diagnostic performance. Image noise and mean attenuation of VNC images were significantly higher than those of TNC images in the centrum semiovale, cerebellum, and pons. The quality of VNC images was excellent or sufficient (85.5% for observer 1, 85.5% for observer 2), and complete acceptance of VNC images was achieved in 64.5% for observer 1 and in 71.0% for observer 2; however, the addition of contrast-enhanced images increased the level of acceptance (92.0% for observer 1, 90.9% for observer 2). Clip artifacts were significantly lower in VNC images than in TNC images. CT dose index, dose-length product, and effective dose were significantly lower without TNC images. VNC images showed lower diagnostic performance and image quality, and higher image noise than TNC images; however, VNC images could reduce clip artifacts and radiation doses.
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- 2019
35. Diffuse Large B-Cell Lymphoma Associated with a Chronic Inflammatory Condition Induced by Metallic Implants: A Case Report.
- Author
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Jin Hee Park, Sun Joo Lee, and Hye Jung Choo
- Subjects
LYMPHOMAS ,B cells ,MAGNETIC resonance imaging ,PATHOLOGY ,ULTRASONIC imaging - Abstract
Chronic inflammatory condition associated with metallic implant insertion is a risk factor for diffuse large B-cell lymphoma (DLBCL). Metal ions play a role in the pathogenesis of lymphoma. We report a rare case of DLBCL in a patient who had a metallic implant in the proximal tibia for 15 months. Radiologic studies, including US and MRI, showed disproportionately large extraosseous soft-tissue mass and bone marrow involvement without prominent bone destruction. Multiple complications are associated with metallic implants, and misdiagnosis may lead to inappropriate treatment. Therefore, distinguishing lymphomas caused by a metallic implant-induced chronic inflammatory condition from other periprosthetic benign lesions and malignant soft tissue masses is challenging, but it is critical. [ABSTRACT FROM AUTHOR]
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- 2022
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36. Comparison of Ultrasonography Features and K-TIRADS for Isthmic and Lobar Papillary Thyroid Carcinomas: A Single-Center Study
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Do Hun Kim, Ki Jung Ahn, Ji Sun Park, Soo Jin Jung, Jin Young Park, Hye Jung Choo, Yoo Jin Lee, Ha Kyoung Park, Tae Kwun Ha, Gi Won Shin, Sung Ho Moon, Hye Jin Baek, and Dong Wook Kim
- Subjects
0301 basic medicine ,Adult ,Male ,medicine.medical_specialty ,animal structures ,endocrine system diseases ,Endocrinology, Diabetes and Metabolism ,030209 endocrinology & metabolism ,Single Center ,lcsh:Diseases of the endocrine glands. Clinical endocrinology ,thyroid ,Thyroid carcinoma ,03 medical and health sciences ,isthmic ,0302 clinical medicine ,Endocrinology ,Image Interpretation, Computer-Assisted ,Medicine ,Humans ,Thyroid Neoplasms ,K-TIRADS ,Aged ,Retrospective Studies ,Original Research ,Aged, 80 and over ,lcsh:RC648-665 ,Tumor size ,business.industry ,Thyroid ,ultrasonography ,Middle Aged ,Prognosis ,030104 developmental biology ,medicine.anatomical_structure ,Radiology Information Systems ,Thyroid Cancer, Papillary ,Case-Control Studies ,embryonic structures ,papillary thyroid carcinoma ,Female ,Radiology ,Ultrasonography ,business ,Follow-Up Studies - Abstract
Objective: This study aimed to compare ultrasonography (US) features and the Korean-Thyroid Imaging Reporting and Data System (K-TIRADS) categories for diagnosing isthmic and lobar papillary thyroid carcinomas (PTC).Methods: From January 2009 to December 2012, 163 patients who underwent thyroid surgery and were confirmed with a post-operative histopathological diagnosis of isthmic PTC were retrospectively included. Fifty-nine patients were excluded because their tumor size was 0.05).Conclusions: K-TIRADS may be useful in the diagnosis of both isthmic and lobar PTC.
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- 2020
37. Prevalence and Features of Thyroglossal Duct Cyst on Ultrasonography, According to Radioactive Iodine Therapy: A Single-Center Study
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Ji Sun Park, Dong Wook Kim, Ki Jung Ahn, Hye Jin Baek, Jin Young Park, Soo Jin Jung, Ha Kyoung Park, Sung Ho Moon, Hye Jung Choo, Gi Won Shin, Do Hun Kim, Tae Kwun Ha, and Yoo Jin Lee
- Subjects
0301 basic medicine ,Adult ,Male ,medicine.medical_specialty ,Adolescent ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Thyroglossal duct ,prevalence ,030209 endocrinology & metabolism ,radioactive iodine ablation ,Single Center ,lcsh:Diseases of the endocrine glands. Clinical endocrinology ,Cohort Studies ,Iodine Radioisotopes ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Endocrinology ,medicine ,Humans ,Cyst ,Aged ,Retrospective Studies ,Original Research ,Aged, 80 and over ,Centimeter ,lcsh:RC648-665 ,business.industry ,Thyroid ,Thyroidectomy ,ultrasonography ,Middle Aged ,medicine.disease ,Thyroglossal Cyst ,thyroglossal duct cyst ,030104 developmental biology ,medicine.anatomical_structure ,thyroidectomy ,Female ,Radioactive iodine therapy ,Radiology ,Ultrasonography ,business - Abstract
Objective: The relationship between radioactive iodine therapy (RIT) and prevalence of thyroglossal duct cysts (TGDC) on ultrasonography (US) has not been reported. We assessed the prevalence and US features of TGDC according to RIT.Methods: From July 2017 to June 2018, 3,146 subjects underwent thyroid or neck US at our center. The presence or absence of TGDCs was prospectively investigated based on real-time US examination. Among the 3,146 subjects, 261 subjects were excluded because of 0.05). The common US features of TGDC were suprahyoid location, ~1 centimeter, and flat-to-ovoid or round shape.Conclusions: RIT may increase the prevalence of TGDCs, particularly in men.
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- 2019
38. Unexpected Lung and Brain Metastases 9 Years After Thyroid Lobectomy for Follicular Adenoma: A Case Report
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Jin Young Park, Soo Jin Jung, Tae Kwun Ha, Ha Kyoung Park, Dong Wook Kim, Young Jun Cho, Sung Ho Moon, Ki Jung Ahn, Hye Jung Choo, Jin Wook Baek, Gi Won Shin, Do Hun Kim, Yoo Jin Lee, Ji Sun Park, and Young Jin Heo
- Subjects
0301 basic medicine ,medicine.medical_specialty ,endocrine system ,Adenoma ,endocrine system diseases ,Endocrinology, Diabetes and Metabolism ,Neck mass ,030209 endocrinology & metabolism ,Thyroid Lobectomy ,Case Report ,follicular adenoma ,medicine.disease_cause ,lcsh:Diseases of the endocrine glands. Clinical endocrinology ,Metastasis ,thyroid ,Thyroid carcinoma ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,medicine ,Carcinoma ,metastasis ,Thyroid neoplasm ,lcsh:RC648-665 ,business.industry ,Thyroid ,ultrasonography ,medicine.disease ,030104 developmental biology ,medicine.anatomical_structure ,papillary thyroid carcinoma ,Radiology ,medicine.symptom ,business - Abstract
Background: Benign thyroid follicular tumors without histological evidence of carcinoma can metastasize. However, the pathogenesis of metastasis remains unclear. Here, the new proposed terminology, "non-invasive follicular thyroid neoplasm with papillary-like nuclear features" should be considered. We present a case of an encapsulated type of follicular variant of papillary thyroid carcinoma (FVPTC) that exhibited distant lung and brain metastases and was initially diagnosed as follicular adenoma. Case Report: In December 2006, a 64-year-old woman underwent ultrasonography-guided fine-needle aspiration of the right thyroid nodule at our hospital because of a palpable right neck mass. Right lobectomy was performed, and a follicular adenoma was diagnosed. In October 2015, she visited our hospital owing to dry cough and mild dyspnea and underwent computed tomography-guided transthoracic core needle biopsy for the lung nodule owing to probably multiple lung metastasis on chest X-ray and computed tomography. Based on retrospective analysis of the primary thyroid tumor and lung nodule specimen, an encapsulated follicular variant of papillary thyroid carcinoma with lung metastasis was confirmed. Conclusion: We report a case of an encapsulated follicular variant of papillary thyroid carcinoma with unexpected metastasis to the lung 9 years after thyroid surgery in a patient who was initially diagnosed as follicular adenoma. A careful close follow-up with re-examination of the histopathology specimen may be needed in patients who were diagnosed with benign thyroid follicular tumors.
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- 2019
39. The location of the peroneus longus tendon in the cuboid groove: sonographic study in various positions of the ankle–foot in asymptomatic volunteers
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Hye Jung Choo, Sun Joo Lee, Donald Resnick, and Brady K. Huang
- Subjects
Adult ,Male ,Posture ,Groove width ,Asymptomatic ,030218 nuclear medicine & medical imaging ,Tendons ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Peroneus longus ,Humans ,Radiology, Nuclear Medicine and imaging ,Prospective Studies ,Ultrasonography ,030222 orthopedics ,Cuboid ,Foot ,business.industry ,Tarsal Bones ,Anatomy ,Healthy Volunteers ,Tendon ,medicine.anatomical_structure ,Female ,Ankle ,medicine.symptom ,business ,Groove (joinery) - Abstract
To evaluate the normal location of the peroneus longus tendon (PL) in the cuboid groove in various ankle–foot positions by ultrasonography in asymptomatic volunteers. Ultrasonographic assessment of the PL in the cuboid groove was performed in 20 feet of ten healthy volunteers. Each PL was examined in five ankle–foot positions (i.e., neutral, dorsiflexion, plantar-flexion, supination, and pronation). The PL location was qualitatively categorized as “inside” when the PL was entirely within the cuboid groove, as “overlying” when some part of the PL was perched on the cuboid tuberosity, and as “outside” when the PL was entirely on the cuboid tuberosity. For quantitative evaluation of the PL location, the distance between the PL and the cuboid groove was measured. The width of the cuboid groove was measured in the neutral position. The PL location did not significantly change with changes in the ankle–foot position. Qualitatively, an “overlying” PL was the most common type, regardless of the ankle–foot position. “Inside” PLs were found in only 35, 20, 30, 25, and 35% of feet in neutral, dorsiflexion, plantar-flexion, supination, and pronation positions, respectively. The quantitative PL location was also not significantly different among all ankle–foot positions and it was significantly negatively correlated with the cuboid groove width. In healthy volunteers, 65% or more of the PLs were partially or completely located outside of the cuboid groove, regardless of the ankle–foot position. The PL location relative to the cuboid groove was related to the cuboid groove width.
- Published
- 2018
40. Retention of Gadolinium in Cerebrospinal Fluid and Decreased Renal Function: A Case Report
- Author
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Young Jin Heo, Cheon Sik Jung, Kyeong Sik Park, Hae Woong Jeong, Hye Jung Choo, and Jin Wook Baek
- Subjects
lcsh:Medical physics. Medical radiology. Nuclear medicine ,business.industry ,Gadolinium ,lcsh:R895-920 ,chemistry.chemical_element ,030204 cardiovascular system & hematology ,subarachnoid space ,cerebrospinal fluid ,030218 nuclear medicine & medical imaging ,renal insufficiency ,03 medical and health sciences ,Decreased renal function ,0302 clinical medicine ,Cerebrospinal fluid ,medicine.anatomical_structure ,chemistry ,Anesthesia ,cardiovascular system ,Medicine ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,Subarachnoid space ,gadolinium ,business - Abstract
A gadolinium-based contrast is the preferred agent when differentiating acute neurological diseases. Since the renal route is the main pathway for excretion of gadolinium chelates, prolonged extracellular distribution of gadolinium has previously been reported in dialysis-dependent patients. Hence, gadolinium-based contrast agents are used cautiously in patients with known renal disease. Retention of gadolinium manifests as increased fluid-attenuated inversion recovery (FLAIR) signal intensity in the subarachnoid space, leading to diagnostic errors. Here, we describe a patient who presented to our emergency room with an acute cerebral infarction. Enhanced brain magnetic resonance imaging performed 2 days later revealed high signal intensity in the cerebrospinal fluid spaces on follow-up FLAIR images.
- Published
- 2017
41. Persistent trigeminal artery variant terminating in the posterior inferior cerebellar artery: a case report
- Author
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Ga Young Lee, Young Jin Heo, Hae Woong Jeong, Hye Jung Choo, Jin Wook Baek, Hyun Seok Jung, and Young Jun Cho
- Subjects
0301 basic medicine ,Cerebral arteries ,Anastomosis ,urologic and male genital diseases ,Pathology and Forensic Medicine ,03 medical and health sciences ,Imaging, Three-Dimensional ,0302 clinical medicine ,Cerebellum ,medicine.artery ,otorhinolaryngologic diseases ,medicine ,Basilar artery ,Humans ,Radiology, Nuclear Medicine and imaging ,Posterior communicating artery ,business.industry ,Accidents, Traffic ,Angiography, Digital Subtraction ,Intracranial Aneurysm ,Anatomy ,Cerebral Arteries ,Middle Aged ,body regions ,surgical procedures, operative ,Posterior inferior cerebellar artery ,medicine.anatomical_structure ,cardiovascular system ,Trigeminal artery ,Female ,Surgery ,030101 anatomy & morphology ,Internal carotid artery ,business ,Cerebellar artery ,Magnetic Resonance Angiography ,030217 neurology & neurosurgery - Abstract
Persistent trigeminal artery (PTA) is a rare cerebrovascular variation of remnant fetal carotid-vertebrobasilar anastomoses. The PTA variant terminates in the cerebellar artery with no direct connection to the basilar artery. We present a rare case of a PTA variant that terminated directly into the ipsilateral posterior inferior cerebellar artery.
- Published
- 2017
42. Distally extended muscle belly of the flexor digitorum within the carpal tunnel: is it a risk factor for carpal tunnel syndrome?
- Author
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Sun Joo Lee, Young Mi Park, Dong Wook Kim, and Hye Jung Choo
- Subjects
Adult ,Male ,medicine.medical_specialty ,Asymptomatic ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Carpal tunnel ,In patient ,Prospective Studies ,Risk factor ,Muscle, Skeletal ,Carpal tunnel syndrome ,Ultrasonography ,030222 orthopedics ,Radiological and Ultrasound Technology ,business.industry ,Muscle belly ,General Medicine ,Middle Aged ,musculoskeletal system ,medicine.disease ,Carpal Tunnel Syndrome ,nervous system diseases ,Surgery ,body regions ,medicine.anatomical_structure ,Female ,medicine.symptom ,Cadaveric spasm ,business ,030217 neurology & neurosurgery - Abstract
Background The distally extended muscle belly of the flexor digitorum (MB-FD) within the carpal tunnel has been suggested as a plausible cause for carpal tunnel syndrome (CTS) based on cadaveric studies. Purpose To evaluate whether MB-FD within the carpal tunnel is a risk factor for CTS by comparing asymptomatic volunteers and patients with CTS. Material and Methods Presence, length, and cross-sectional area of MB-FD within the carpal tunnel were evaluated in 63 wrists of 32 asymptomatic volunteers and 52 wrists of 33 patients with CTS using ultrasonography. Length of MB-FD within the carpal tunnel was measured as the distance between the distal end of MB-FD and the palmar margin of the distal radius longitudinally. On a transverse scan, the cross-sectional area of MB-FD at the proximal limit of the carpal tunnel was measured. Results MB-FD in the carpal tunnel was found in 39 (62%) asymptomatic volunteers and 35 (67%) patients with CTS ( P = 0.549). There was a female preponderancy of MB-FD within the carpal tunnel in asymptomatic volunteers ( P = 0.044), but not in patients. Length and cross-sectional area of MB-FD within the carpal tunnel were significantly greater in male-CTS patients than in male volunteers ( P = 0.022 and 0.012, respectively). These qualities were risk factors for CTS in men, though not in women. Conclusion The presence of distally extended MB-FD within the carpal tunnel was not a risk factor for CTS. In men, a longer and thicker MB-FD within the carpal tunnel increased the risk for CTS.
- Published
- 2017
43. [Metallic Artifacts on MR Imaging and Methods for Their Reduction]
- Author
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Hye Jung Choo, Sun Joo Lee, and Young Han Lee
- Subjects
lcsh:Medical physics. Medical radiology. Nuclear medicine ,Artifact (error) ,medicine.diagnostic_test ,prostheses and implants ,business.industry ,lcsh:R895-920 ,Magnetic resonance imaging ,equipment and supplies ,Nuclear magnetic resonance ,artifact ,metals ,medicine ,magnetic resonance imaging ,Radiology, Nuclear Medicine and imaging ,business - Abstract
Metallic artifacts on MR imaging are typically induced by differences in magnetic susceptibility between the metallic implant and surrounding tissue. Conventional techniques for metal artifact reduction require MR machines with low field strength, shift in the frequency-encoding and phase-encoding directions according to the axis of metallic implant, increased receiver bandwidth and matrix, decreased slice thickness, and utilization of the short tau inversion recovery or Dixon method for fat-suppression. Slice-encoding for metal artifact correction and multi-acquisition variable-resonance image combination can dramatically reduce the number of metallic artifacts. However, these sequences have a considerably long acquisition time. Furthermore, the recently developed acceleration techniques including compressed sensing can solve this problem.
- Published
- 2019
44. Thyroid Imaging Reporting and Data System for Detecting Diffuse Thyroid Disease on Ultrasonography: A Single-Center Study
- Author
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Soo Jin Jung, Hye Jung Choo, Jin Young Park, Do Hun Kim, Hye Jin Baek, Ji Sun Park, Sung Ho Moon, Dong Wook Kim, Gi Won Shin, Kyeong Hwa Ryu, Ki Jung Ahn, Tae Kwun Ha, Yoo Jin Lee, and Ha Kyoung Park
- Subjects
0301 basic medicine ,Endocrinology, Diabetes and Metabolism ,030209 endocrinology & metabolism ,Single Center ,lcsh:Diseases of the endocrine glands. Clinical endocrinology ,thyroid ,Autoimmune thyroiditis ,03 medical and health sciences ,0302 clinical medicine ,Vascularity ,Endocrinology ,medicine ,Original Research ,diffuse thyroid disease ,lcsh:RC648-665 ,business.industry ,Thyroid disease ,TIRADS ,Thyroid ,Echogenicity ,autoimmune thyroiditis ,ultrasonography ,medicine.disease ,Confidence interval ,030104 developmental biology ,medicine.anatomical_structure ,medicine.symptom ,Nuclear medicine ,business ,Lymphocytic Thyroiditis - Abstract
Objective: This study aimed to compare the ultrasonography (US) features of diffuse thyroid disease (DTD) and normal thyroid parenchyma (NTP), and to propose a structured imaging reporting system for detecting DTD. Methods: This retrospective study assessed the findings for 270 consecutive patients who underwent thyroid US before thyroid surgery. The following US data were analyzed: DTD-specific features, parenchymal echotexture and echogenicity, anteroposterior diameter, glandular margin, and parenchymal vascularity. Univariate and multivariate analyses with generalized estimating equations were performed to investigate the relationship between US features and DTD. The fitted probability of DTD was analyzed by using a regression equation. Results: Of the 270 patients, there were NTP (n = 193), Hashimoto thyroiditis (n = 24), non-Hashimoto lymphocytic thyroiditis (n = 51), Graves' disease (n = 1), and diffuse hyperplasia (n = 1). The following US features were significantly associated with DTD: decreased or increased parenchymal echogenicity, coarse parenchymal echotexture, increased anteroposterior diameter, lobulated glandular margin, and increased parenchymal vascularity. Of these, coarse parenchymal echotexture was the most significant independent predictor of DTD. The numbers of abnormal US features were positively correlated with the fitted probability and risk of DTD. The diagnostic indices were highest when the chosen cut-off criterion was category III with the largest Az value (0.867, 95% confidence interval: 0.820-0.905), yielding a sensitivity of 68.8%, specificity of 92.2%, positive predictive value of 77.9%, negative predictive value of 88.1%, and accuracy of 85.6% (p < 0.001). Conclusions: Our sonographic reporting and data system may be useful for detecting DTD.
- Published
- 2019
45. Ultrasound detection of incidental diffuse parotid disease: A single-center study
- Author
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Yoo Jin Lee, Do Hun Kim, Soo Jin Jung, Ji Sun Park, Hye Jin Baek, Ki Jung Ahn, Dong Wook Kim, Tae Kwun Ha, Jin Young Park, Sung Ho Moon, and Hye Jung Choo
- Subjects
Male ,Pulmonology ,Disease ,Single Center ,Salivary Glands ,Diagnostic Radiology ,Ultrasound Imaging ,Medicine and Health Sciences ,Medical Personnel ,Parotid surgery ,Ultrasonography ,Aged, 80 and over ,Multidisciplinary ,Radiology and Imaging ,Ultrasound ,Histopathological analysis ,Middle Aged ,Professions ,Oncology ,Medicine ,Female ,Radiology ,Parotid Diseases ,Anatomy ,Research Article ,Adult ,medicine.medical_specialty ,Adolescent ,Imaging Techniques ,Science ,Surgical and Invasive Medical Procedures ,Interstitial Lung Diseases ,Research and Analysis Methods ,Autoimmune Diseases ,Young Adult ,Exocrine Glands ,stomatognathic system ,Diagnostic Medicine ,Parenchyma ,Radiologists ,medicine ,Cancer Detection and Diagnosis ,Humans ,Aged ,Parotid Glands ,Receiver operating characteristic ,business.industry ,Echogenicity ,Biology and Life Sciences ,People and Places ,Population Groupings ,business ,Digestive System - Abstract
In this study, we compared ultrasound (US) features between normal parotid parenchyma (NPP) and incidental diffuse parotid disease (DPD). From January 2008 to December 2017, 180 patients underwent neck US before parotid surgery at our hospital. From these, 82 were excluded because of the lack of histopathological data concerning the parotid parenchyma or inadequate US images. A single radiologist blinded to the clinicoserological data and histopathological results, retrospectively investigated all US features and categorizations for the parotid glands using a picture archiving and communication system. Retrospective histopathological analysis of the parotid parenchyma was performed by a single pathologist. On the basis of the histopathological analyses, the 98 patients were divided into NPP (n = 70) and DPD (n = 28) groups. Among US features, parenchymal echogenicity and echotexture showed statistically significant differences between the two groups (p < 0.0001), whereas the gland size, margin, and vascularity showed no significant differences (p > 0.05). The US-based categorization significantly differentiated between NPP and DPD (p < 0.0001), and receiver operating characteristic curve analysis revealed that US categorization based on ≥2 abnormal US features showed the best diagnostic performance for detecting DPD. Thus, US can aid in differentiating DPD from NPP.
- Published
- 2019
46. Comparison of the Quality of Various Polychromatic and Monochromatic Dual-Energy CT Images with or without a Metal Artifact Reduction Algorithm to Evaluate Total Knee Arthroplasty.
- Author
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Hye Jung Choo, Sun Joo Lee, Dong Wook Kim, Yoo Jin Lee, Jin Wook Baek, Ji-yeon Han, and Young Jin Heo
- Published
- 2021
- Full Text
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47. Factors Influencing the Outcome of Ultrasound-Guided Fine-Needle Aspiration for Salivary Gland Lesion Diagnosis
- Author
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Soo Jin Jung, Min-Woo Kim, Young Mi Park, Hyun Seok Jung, Hye Jin Baek, Dong Wook Kim, and Hye Jung Choo
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,Biopsy, Fine-Needle ,Malignancy ,Sensitivity and Specificity ,Salivary Glands ,030218 nuclear medicine & medical imaging ,Lesion ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Vascularity ,Positive predicative value ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Sampling (medicine) ,Child ,Ultrasonography, Interventional ,Aged ,Retrospective Studies ,Aged, 80 and over ,Radiological and Ultrasound Technology ,Salivary gland ,medicine.diagnostic_test ,business.industry ,Ultrasound ,Infant ,Reproducibility of Results ,Middle Aged ,Salivary Gland Neoplasms ,medicine.disease ,medicine.anatomical_structure ,Fine-needle aspiration ,Child, Preschool ,030220 oncology & carcinogenesis ,Female ,Radiology ,medicine.symptom ,business - Abstract
OBJECTIVES This study aimed to assess multiple factors influencing the outcomes of ultrasound (US)-guided fine-needle aspiration (FNA) of salivary gland lesions. METHODS From 2008 to 2013, a single radiologist performed US-guided FNA of salivary gland lesions in 243 patients. With the exclusion of pure cysts, poor image quality, and insufficient static image cases, 218 salivary gland lesions in 218 patients were included. The composition, size, location, and vascularity of the lesions were retrospectively investigated on the basis of sonographic findings by the same radiologist. The relationship between sampling adequacy and multiple factors was compared, and the diagnostic accuracy of US-guided FNA of salivary gland lesions was calculated by using the final diagnosis as a reference standard. RESULTS The sampling adequacy rate for US-guided FNA of the 218 salivary gland lesions was 96.8% (211 of 218). A significant difference was observed in the composition and vascularity of the lesions (P < .0001), whereas there was no significant difference in the patient age and sex, lesion size, lesion location, and needle size. The rate of inadequate sampling increased in predominantly cystic lesions compared with solid lesions as well as in low-vascularity lesions compared with high-vascularity lesions. Of the 218 lesions, 178 (81.7%) were ultimately diagnosed, and most were benign (162 of 178 [91.0%]). When 3 cases with indeterminate cytologic results were excluded, the sensitivity, specificity, positive and negative predictive values, and accuracy of US-guided FNA of salivary gland lesions were 64.3%, 98.8%, 81.8%, 97.0%, and 96.0%, respectively. CONCLUSIONS When using US-guided FNA to diagnose salivary gland lesions, sampling adequacy depends on the composition or vascularity of the lesions.
- Published
- 2016
48. Factors Correlating Outcome in Young Infants with Congenital Muscular Torticollis
- Author
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Hyun Seok Jung, Young Mi Park, Seung Ho Kim, Ji Hwa Ryu, Hye Jung Choo, Dong Wook Kim, Hye Jin Baek, and Sun Joo Lee
- Subjects
Male ,medicine.medical_specialty ,Pediatrics ,Young infants ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Congenital muscular torticollis ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,In patient ,Physical Therapy Modalities ,Torticollis ,Ultrasonography ,030222 orthopedics ,business.industry ,Infant, Newborn ,Infant ,Echogenicity ,General Medicine ,Visible Lesion ,medicine.disease ,Surgery ,Female ,medicine.symptom ,business ,Neck ,030217 neurology & neurosurgery ,Follow-Up Studies - Abstract
Purpose No previous study using follow-up ultrasonography for evaluating the factors associated with the successful regression of congenital muscular torticollis in young infants has been published. This study aimed to assess clinical factors and sonographic features potentially influencing regression in patients with congenital muscular torticollis. Methods From January 2010 to December 2012, 80 infants underwent neck ultrasonography because of clinical suspicion of congenital muscular torticollis. We statistically analysed the correlation between complete resolution and clinicosonographic findings when complete resolution was defined as no visible lesion on follow-up ultrasonography. Results Of the 80 infants, 61 had congenital muscular torticollis and all were followed up by ultrasonography: 1) 34 underwent physiotherapy, and 27 of them (79.4%) revealed complete resolution in follow-up; 2) 27 did not undergo physiotherapy, and 15 of them (55.6%) showed complete resolution. A statistically significant correlation was found between physiotherapy and complete resolution, but not between complete resolution and patient sex; size, volume, and echogenicity of the lesion; and thickness ratio. Conclusions Physiotherapy was the only factor influencing complete resolution in young infants with congenital muscular torticollis.
- Published
- 2016
49. Assessment of the Location of the Peroneus Longus Tendon in the Cuboid Groove Using 3D Isotropic Fast Spin-Echo MRI
- Author
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Ji Yoon Lee, Heui-Chul Gwak, Dong Wook Kim, Joon-Yong Jung, Hye Jung Choo, Jin Wook Baek, Sun Joo Lee, and Young Jin Heo
- Subjects
medicine.anatomical_structure ,Cuboid ,Nuclear magnetic resonance ,Materials science ,medicine.diagnostic_test ,Isotropy ,Peroneus longus ,medicine ,Magnetic resonance imaging ,Fast spin echo ,Dislocation ,Groove (engineering) ,Tendon - Published
- 2020
50. Comparison of cytological adequacy and pain scale score in ultrasound-guided fine-needle aspiration of solid thyroid nodules for liquid-based cytology with with 23- and 25-gauge needles: a single-center prospective study
- Author
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Hye Jin Baek, Soo Jin Jung, Young Jun Cho, Dong Wook Kim, Young Jin Heo, Yoo Jin Lee, Gi Won Shin, Hye Jung Choo, and Jin Wook Baek
- Subjects
0301 basic medicine ,Thyroid nodules ,Adult ,Male ,medicine.medical_specialty ,lcsh:Medicine ,Pain ,Article ,Thyroid cancer ,03 medical and health sciences ,0302 clinical medicine ,Cytology ,medicine ,Humans ,Prospective Studies ,Thyroid Nodule ,lcsh:Science ,Prospective cohort study ,Endoscopic Ultrasound-Guided Fine Needle Aspiration ,Aged ,Pain Measurement ,Retrospective Studies ,Multidisciplinary ,medicine.diagnostic_test ,business.industry ,lcsh:R ,Ultrasound ,Liquid Biopsy ,Retrospective cohort study ,Pain scale ,Middle Aged ,medicine.disease ,Thyroid diseases ,030104 developmental biology ,Fine-needle aspiration ,Liquid-based cytology ,lcsh:Q ,Female ,Radiology ,business ,030217 neurology & neurosurgery - Abstract
In ultrasound (US)-guided fine-needle aspiration (FNA) of solid thyroid nodules (STN) using liquid-based cytology (LBC), the most appropriate needle size for LBC remains unclear. This study compared the cytological adequacy and complications associated with using 23- and 25-gauge needles in US-guided FNA of STNs using LBC. US-guided FNA was performed in consecutive patients by one radiologist to diagnose STNs ≥ 5 mm in the largest diameter. The one-sampling technique through a single needle puncture and multiple to-and-fro needle motions was used in each patient. The 23- and 25-guage needles were used consecutively each day. After FNA, the pain and complications experienced by each patient were investigated by a nurse, who was blinded to the information of needle gauge used. A cytopathologist retrospectively analyzed the cytological adequacy and cellularity of the cases. Of the 99 STNs, eight (8.1%) exhibited inadequate cytology (4 each with 23- and 25-gauge needles). The rate of cytological adequacy was not statistically different between the groups (p = 0.631). The mean pain scale values with 23- and 25-gauge needles were 2.1 ± 1.3 and 1.6 ± 1.3, respectively (p = 0.135). There were no significant complications in either group. In conclusion, both 23- and 25-gauge needles are useful in LBC because cytological adequacy and complications were not statistically different with both sizes of the needles.
- Published
- 2018
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