9 results on '"Chien-Hsu Chen"'
Search Results
2. Innovative Head-Mounted System Based on Inertial Sensors and Magnetometer for Detecting Falling Movements
- Author
-
Chih-Lung Lin, Wen-Ching Chiu, Ting-Ching Chu, Yuan-Hao Ho, Fu-Hsing Chen, Chih-Cheng Hsu, Ping-Hsiao Hsieh, Chien-Hsu Chen, Chou-Ching K. Lin, Pi-Shan Sung, and Peng-Ting Chen
- Subjects
fall detection ,orientation filter ,triaxial accelerometer ,triaxial gyroscope ,triaxial magnetometer ,signal detecting and processing ,Chemical technology ,TP1-1185 - Abstract
This work presents a fall detection system that is worn on the head, where the acceleration and posture are stable such that everyday movement can be identified without disturbing the wearer. Falling movements are recognized by comparing the acceleration and orientation of a wearer’s head using prespecified thresholds. The proposed system consists of a triaxial accelerometer, gyroscope, and magnetometer; as such, a Madgwick’s filter is adopted to improve the accuracy of the estimation of orientation. Moreover, with its integrated Wi-Fi module, the proposed system can notify an emergency contact in a timely manner to provide help for the falling person. Based on experimental results concerning falling movements and activities of daily living, the proposed system achieved a sensitivity of 96.67% in fall detection, with a specificity of 98.27%, and, therefore, is suitable for detecting falling movements in daily life.
- Published
- 2020
- Full Text
- View/download PDF
3. Promise and the Pharmacological Mechanism of Botulinum Toxin A in Chronic Prostatitis Syndrome
- Author
-
Chien-Hsu Chen, Pradeep Tyagi, and Yao-Chi Chuang
- Subjects
botulinum toxin ,chronic prostatitis ,Medicine - Abstract
Chronic prostatitis/chronic pelvic pain syndrome (CP/ CPPS) has a negative impact on the quality of life, and its etiology still remains unknown. Although many treatment protocols have been evaluated in CP/CPPS, the outcomes have usually been disappointing. Botulinum neurotoxin A (BoNT-A), produced from Clostridium botulinum, has been widely used to lower urinary tract dysfunctions such as detrusor sphincter dyssynergia, refractory overactive bladder, interstitial cystitis/bladder pain syndromes, benign prostatic hyperplasia, and CP/ CPPS in urology. Here, we review the published evidence from animal models to clinical studies for inferring the mechanism of action underlying the therapeutic efficacy of BoNT in CP/CPPS. Animal studies demonstrated that BoNT-A, a potent inhibitor of neuroexocytosis, impacts the release of sensory neurotransmitters and inflammatory mediators. This pharmacological action of BoNT-A showed promise of relieving the pain of CP/CPPS in placebo-controlled and open-label BoNT-A and has the potential to serve as an adjunct treatment for achieving better treatment outcomes in CP/CPPS patients.
- Published
- 2019
- Full Text
- View/download PDF
4. Convolutional Neural Networks to Classify Alzheimer’s Disease Severity Based on SPECT Images: A Comparative Study
- Author
-
Wei-Chih Lien, Chung-Hsing Yeh, Chun-Yang Chang, Chien-Hsiang Chang, Wei-Ming Wang, Chien-Hsu Chen, and Yang-Cheng Lin
- Subjects
General Medicine ,convolutional neural network (CNN) ,Alzheimer’s disease (AD) ,single-photon emission computed tomography (SPECT) ,transfer learning ,image recognition - Abstract
Image recognition and neuroimaging are increasingly being used to understand the progression of Alzheimer’s disease (AD). However, image data from single-photon emission computed tomography (SPECT) are limited. Medical image analysis requires large, labeled training datasets. Therefore, studies have focused on overcoming this problem. In this study, the detection performance of five convolutional neural network (CNN) models (MobileNet V2 and NASNetMobile (lightweight models); VGG16, Inception V3, and ResNet (heavier weight models)) on medical images was compared to establish a classification model for epidemiological research. Brain scan image data were collected from 99 subjects, and 4711 images were used. Demographic data were compared using the chi-squared test and one-way analysis of variance with Bonferroni’s post hoc test. Accuracy and loss functions were used to evaluate the performance of CNN models. The cognitive abilities screening instrument and mini mental state exam scores of subjects with a clinical dementia rating (CDR) of 2 were considerably lower than those of subjects with a CDR of 1 or 0.5. This study analyzed the classification performance of various CNN models for medical images and proved the effectiveness of transfer learning in identifying the mild cognitive impairment, mild AD, and moderate AD scoring based on SPECT images.
- Published
- 2023
5. Totally X-ray-Free Ultrasound-Guided Mini-Percutaneous Nephrolithotomy in Galdakao-Modified Supine Valdivia Position: A Novel Combined Surgery
- Author
-
Yi-Yang Liu, Yen-Ta Chen, Hao-Lun Luo, Yuan-Chi Shen, Chien-Hsu Chen, Yao-Chi Chuang, Ko-Wei Huang, and Hung-Jen Wang
- Subjects
mini-PCNL ,ultrasound guidance ,GMSV position ,General Medicine - Abstract
We introduced a novel surgery that combines ultrasound guidance, miniaturization and Galdakao-modified supine Valdivia (GMSV) position in percutaneous nephrolithotomy (PCNL) and evaluated the safety and efficacy. This retrospective, single-center study retrospectively reviewed 150 patients who underwent ultrasound-guided mini-PCNL in the GMSV position from November 2019 to March 2022. All perioperative parameters were collected. Stone-free status was defined as no residual stones or clinically insignificant residual fragments (CIRF)
- Published
- 2022
6. Innovative Head-Mounted System Based on Inertial Sensors and Magnetometer for Detecting Falling Movements
- Author
-
Chien-Hsu Chen, Peng Ting Chen, Pi Shan Sung, Chih-Lung Lin, Fu Hsing Chen, Ping Hsiao Hsieh, Chih Cheng Hsu, Ting Ching Chu, Chou Ching K. Lin, Wen Ching Chiu, and Yuan Hao Ho
- Subjects
Computer science ,Movement ,Acceleration ,02 engineering and technology ,head-mounted devices ,lcsh:Chemical technology ,01 natural sciences ,Biochemistry ,Article ,Analytical Chemistry ,law.invention ,Wearable Electronic Devices ,triaxial magnetometer ,law ,Inertial measurement unit ,Injury prevention ,Activities of Daily Living ,0202 electrical engineering, electronic engineering, information engineering ,Humans ,Computer vision ,lcsh:TP1-1185 ,Sensitivity (control systems) ,Electrical and Electronic Engineering ,triaxial accelerometer ,Instrumentation ,business.industry ,Orientation (computer vision) ,010401 analytical chemistry ,Gyroscope ,triaxial gyroscope ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,orientation filter ,fall detection ,Filter (video) ,020201 artificial intelligence & image processing ,Accidental Falls ,Artificial intelligence ,Falling (sensation) ,business ,signal detecting and processing ,Algorithms - Abstract
This work presents a fall detection system that is worn on the head, where the acceleration and posture are stable such that everyday movement can be identified without disturbing the wearer. Falling movements are recognized by comparing the acceleration and orientation of a wearer&rsquo, s head using prespecified thresholds. The proposed system consists of a triaxial accelerometer, gyroscope, and magnetometer, as such, a Madgwick&rsquo, s filter is adopted to improve the accuracy of the estimation of orientation. Moreover, with its integrated Wi-Fi module, the proposed system can notify an emergency contact in a timely manner to provide help for the falling person. Based on experimental results concerning falling movements and activities of daily living, the proposed system achieved a sensitivity of 96.67% in fall detection, with a specificity of 98.27%, and, therefore, is suitable for detecting falling movements in daily life.
- Published
- 2020
7. Comparison of the Prognostic Value of Ki-67 and Programmed Cell Death Ligand-1 in Patients with Upper Tract Urothelial Carcinoma
- Author
-
Chien-Hsu Chen, Eing-Mei Tsai, Shun-Chen Huang, Ping-Chia Chiang, Po-Hui Chiang, Ming-Tse Sung, Mu-Yao Tsai, and Jau-Ling Suen
- Subjects
Programmed cell death ,medicine.medical_specialty ,Necrosis ,Value (computer science) ,Gastroenterology ,Article ,radical nephroureterectomy ,Internal medicine ,combined positive score ,medicine ,In patient ,programmed cell death ligand-1 ,Pathological ,biology ,business.industry ,General Medicine ,upper tract urothelial carcinoma ,Ki-67 ,biology.protein ,Medicine ,T-stage ,Immunohistochemistry ,medicine.symptom ,business - Abstract
We retrospectively enrolled 102 patients with upper tract urothelial carcinoma (UTUC) who underwent radical nephroureterectomy to examine the prognostic value of Ki-67 and programmed cell death ligand-1 (PD-L1). Then, we performed PD-L1 and Ki-67 immunohistochemical staining on whole tissue sections. The cut-off value of PD-L1 positivity was a combined positive score (CPS) ≥10 and the Ki-67 overexpression was 20%. Among the 102 patients, 16.7% and 48.0% showed positive PD-L1 expression and Ki-67 overexpression, respectively. A CPS ≥10 was significantly associated with a higher pathological T stage (p = 0.049). In addition, Ki-67 overexpression was significantly associated with a pathological T stage ≥ 2 (p = 0.027) and tumour necrosis (p = 0.016). In the multivariable analysis, a positive PD-L1 expression was significantly correlated with worse cancer-specific survival (HR = 3.66, 95% CI =1.37−9.77, p = 0.01). However, there was no predictive value using a combination of PD-L1 expression and Ki-67 overexpression as a prognostic predictor. Compared with Ki-67 overexpression, a positive PD-L1 expression with CPS ≥ 10 was a stronger independent prognostic factor for CSS in patients with UTUC.
- Published
- 2021
8. Comparison of Robot-Assisted Laparoscopic Partial Nephrectomy with Laparoscopic Cryoablation in the Treatment of Localised Renal Tumours: A Propensity Score-Matched Comparison of Long-Term Outcomes
- Author
-
Yuan-Tso Cheng, Yen-Ta Chen, Hui-Ying Liu, Hao Lun Luo, Hung-Jen Wang, Chih Hsiung Kang, Po-Hui Chiang, and Chien-Hsu Chen
- Subjects
Medicine (General) ,medicine.medical_specialty ,genetic structures ,medicine.medical_treatment ,localised renal tumours ,Clinical Biochemistry ,030232 urology & nephrology ,Urology ,Renal function ,Article ,Renal neoplasm ,robot-assisted laparoscopic partial nephrectomy ,03 medical and health sciences ,R5-920 ,0302 clinical medicine ,Blood loss ,laparoscopic cryoablation ,medicine ,Long term outcomes ,Stage (cooking) ,business.industry ,Cryoablation ,eye diseases ,Nephrectomy ,030220 oncology & carcinogenesis ,Propensity score matching ,business - Abstract
Preserving renal function and controlling oncological outcomes are pertinent when managing renal neoplasms. Cryoablation is the recommended treatment only for clinical T1a stage renal tumour. Here, we compared the outcomes of robot-assisted laparoscopic partial nephrectomy (RaPN) and laparoscopic cryoablation (LCA) in the treatment of patients with localised T1-T2 renal tumours. Overall, 86 patients who received RaPN and 78 patients underwent LCA were included in this study. The intraoperative, postoperative, and oncological outcomes in the LCA group were non-inferior to the RaPN group. Moreover, LCA demonstrated shorter operative time (267.45 ± 104.53 min vs. 138.56 ± 45.28 min, p <, 0.001), lower blood loss (300.56 ± 360.73 mL vs. 30.73 ± 50.31 mL, p <, 0.001), and slight renal function deterioration because of the reduced invasiveness, without compromising on the oncological outcomes.
- Published
- 2021
9. Authoritative Parents and Dominant Children as the Center of Communication for Sustainable Healthy Aging
- Author
-
Chien-Hsu Chen, Elizabeth Wianto, and Elty Sarvia
- Subjects
Adult ,Gerontology ,Population ageing ,Health, Toxicology and Mutagenesis ,lcsh:Medicine ,Article ,03 medical and health sciences ,0302 clinical medicine ,0502 economics and business ,Humans ,Center (algebra and category theory) ,030212 general & internal medicine ,050207 economics ,Child ,Baseline (configuration management) ,Aged ,Sedentary lifestyle ,aging population ,Communication ,lcsh:R ,physical activities ,05 social sciences ,Public Health, Environmental and Occupational Health ,Social Support ,Middle Aged ,language.human_language ,Indonesian ,healthy aging ,Indonesia ,Intergenerational Relations ,language ,Marital status ,filial piety ,Thematic analysis ,Psychology ,Inclusion (education) - Abstract
The aging population significantly is shifting the center of gravity of the people toward older ages and median age. Indonesia, as one of the most populous countries, needs to prepare for this situation. This study tries to explain whether the elderly’s sedentary lifestyle is the consequence of intergenerational interaction patterns. Filial piety was arguably implemented, as the interaction baseline within a family member affects how the intergeneration communicates. This study uses thematic analysis based on the opinions from 16 respondents’ experiences and values with respect to behavior toward the older generation with a specific inclusion criterion. Sampling structures represented younger-generation adults who interacted daily with the elderly older generation, divided by their marital status, residencies, and living area in Indonesia. Through emerging themes, was is found out that the dominant figure in the family is the communication center in the family. The dominant figure might be an authoritative parent or dominant child. This targeted approach is useful to enhance connectivity within family members, potentially implementing the Internet of Healthy Things (IoHT) for the younger elderly to reduce undesirable sedentary lifestyles and to deliver sustainable healthy aging in Indonesian society.
- Published
- 2021
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.