103 results on '"Yasuhiro KAWABATA"'
Search Results
2. Development of a Pediatric Dermatology Screening Tool Based on Two Parent-Reported Skin Symptoms: Comparison of Parental Recognition and Physician Diagnosis of Skin Symptoms of Infants and Toddlers
- Author
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Hiroko Sato, Aya Goto, Michio Murakami, and Yasuhiro Kawabata
- Subjects
Computer applications to medicine. Medical informatics ,R858-859.7 ,Public aspects of medicine ,RA1-1270 - Abstract
Aim The objective of the present study was to develop a tool for mothers to assess their children’s skin condition with the ultimate goal of its wider use in general health checkups for infants and toddlers. Methods This was a single-institution, cross-sectional study in Japan, targeting parents of 200 infants and toddlers who visited a dermatology clinic between December 2018 and March 2019. The parents completed a self-administered survey of the mother’s perception of her child’s dermatological symptoms, itchiness, and sleep status, and a quality-oflife assessment, using a nine-question version of the Quality of life in Primary Caregivers of children with Atopic Dermatitis questionnaire (QP9). The attending physician was asked to complete a form about the child’s dermatological condition and the treatment prescribed. The severity of the dermatological condition noted by the physician was compared with the combined response to the 3 perception items (dermatological condition, itchiness, and sleep) reported by the parents, in order to identify the optimal cutoff score. Results Of 200 parent questionnaires distributed, 198 (99% response rate) were returned and analyzed, along with the responses from 198 physician records (100% response rate). The optimal cutoff score was 2/3 for the total score (range 0-6) for 2 items, itchiness and sleep status (sensitivity 73%, specificity 64%). There was a significant difference in QP9 scores between the 2 groups categorized by the cutoff score Conclusions A pediatric dermatological screening tool based on 2 symptoms reported by the parents of children with atopic dermatitis was developed, and its precision and criterion-related validity were confirmed. This simple tool could help parents become better aware of their children’s skin condition and allow healthcare workers to provide adequate skin care advice. This practical tool could be widely applicable in primary child care and public health service settings.
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- 2020
- Full Text
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3. Predictors of Cardioembolic Stroke in Japanese Patients with Atrial Fibrillation in the Fushimi AF Registry
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Ken Yasuda, Shunichi Fukuda, Michikazu Nakamura, Ryo Ohtani, Yasuhiro Kuwata, Masaki Takata, Makoto Sainouchi, Masahiro Gotou, Yuichi Masuda, Satoru Kawarazaki, Yasuhiro Kawabata, Nagako Murase, Tomokazu Aoki, Naohiro Yonemoto, Masaharu Akao, and Tetsuya Tsukahara
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Atrial fibrillation ,Cardioembolic stroke ,Risk factors ,Stroke subtype ,Infarct volume ,Cohort study ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Large-scale clinical trials have analyzed risk factors for any ischemic stroke in patients with atrial fibrillation (AF). However, the risk factors for cardioembolic stroke (CES), specifically, have not been reported. To clarify the risk factors for CES and clinically significant cardioembolic infarction, we examined the incidence of CES and larger infarct volume (IV) (> 30 mL) CES, employing the Fushimi AF Registry, a community-based prospective cohort of AF patients in the Fushimi ward, Kyoto, Japan. Methods: A total of 4,182 Fushimi AF patients were enrolled from March 2011 to December 2014. The risk factors for CES were evaluated using multivariate analysis. Results: Of 4,182 patients enrolled, 3,749 patients were observed for ≥1 year. During the follow-up period (mean duration, 979 ± 7.7 days), 91/3,749 patients experienced a CES (2.43%). Significant risk factors associated with CES were older age (odds ratio [OR], 1.31; 95% confidence interval [CI], 1.01–1.72; p = 0.046), low body weight (OR, 1.30; 95% CI, 1.03–1.65; p = 0.033), sustained AF (OR, 1.67; 95% CI, 1.05–2.71; p = 0.034), and previous stroke or transient ischemic attack (TIA) (OR, 1.94; 95% CI, 1.22–3.06; p = 0.004). Predictors of a large IV were chronic kidney disease (CKD) (OR, 2.08; 95% CI, 1.09–4.05; p = 0.027) and previous stroke/TIA (OR, 2.27; 95% CI, 1.19–4.24; p = 0.011). Conclusions: In this population-based cohort of Japanese patients with AF, in addition to previous stroke/TIA and older age, sustained AF and low body weight emerged as risk factors for CES, as opposed to any stroke, which may have a different risk profile. Patients with CKD or previous stroke/TIA who developed cardioembolic infarction exhibited more advanced severity. There is a need for direct oral anticoagulants that can be used safely in patients with comorbid AF and CKD.
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- 2018
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4. Depth of Field Blur Effect Considering Convergence Distance in Virtual Reality.
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Yasuhiro Kawabata and Masaki Bandai
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- 2023
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5. Spectrally Slicing Coherent Optical Spectrum Analyzer for Measuring Complex Field Waveforms of Optical QAM Signals.
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Yasuhiro Kawabata, Naoki Urakawa, K. Kinoshita, and Koji Igarashi
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- 2020
6. Successful treatment with atezolizumab combination chemotherapy in a patient with high‐grade fetal adenocarcinoma of the lung: A case report
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Kana Fujimoto, Satomi Watanabe, Yuto Yasuda, Emi Date, Yasuhiro Kawabata, Hiroaki Kanemura, Takayuki Takahama, Kimio Yonesaka, Norishige Iizuka, Ken‐ichi Takahashi, Osamu Kawakami, Tomohiro Ozaki, and Kazuhiko Nakagawa
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Pulmonary and Respiratory Medicine ,Oncology ,General Medicine - Published
- 2022
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7. The 30-year (1987-2016) Trend of Strong Typhoons and Genesis Locations Found in the Japan Meteorological Agency's Dvorak Reanalysis Data.
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Yasuhiro KAWABATA, Udai SHIMADA, and Munehiko YAMAGUCHI
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TYPHOONS , *TROPICAL cyclones , *TREND analysis - Abstract
The trend of strong typhoons over the recent 30 years was analyzed using Dvorak reanalysis data from 1987 to 2016 produced by the Japan Meteorological Agency. The strong typhoons were defined in this study as tropical cyclones equivalent to Category 4 and 5 on the Saffir-Simpson scale. The temporal homogeneity of the Dvorak reanalysis data is expected to be much better than that of best track data. Results showed no statistically significant increasing trend in strong typhoons with large inter-annual and multi-year scale variations. Meanwhile, the spatial distribution of the genesis locations of tropical cyclones, which could influence whether or not they develop into strong typhoons, varied locally during the analysis period. The changes in genesis locations may have influenced the overall trend of strong typhoons during the analysis period. The results with the new Dvorak reanalysis data highlight the need for the accumulation of high-quality data over time as well as for careful interpretation of trend analysis results seen in previous studies. [ABSTRACT FROM AUTHOR]
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- 2023
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8. Clinical Outcomes of Acute Atherosclerotic Large-artery Occlusion
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Yasuhiro KAWABATA, Norio NAKAJIMA, Hidenori MIYAKE, Shunichi FUKUDA, Tetsuya TSUKAHARA, and Ken YASUDA
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- 2022
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9. Effects of open caption telop color on value perception in the news context: From the tone perspective
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Gong Li and Yasuhiro Kawabata
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General Chemical Engineering ,Perspective (graphical) ,news value ,Human Factors and Ergonomics ,Context (language use) ,General Chemistry ,Tone (literature) ,color ,perception open caption telop ,OCT ,Value perception ,News values ,Psychology ,Cognitive psychology - Abstract
Several studies have shown that color plays a vital role in the perception of visual information. This study clarified the cognitive differences generated by open caption telop colors in the perception of news value as importance, novelty, and timeliness among the negative, neutral, and positive news contexts. We also explored the news value integration by the color in the news emotional context. In this study, three tones, that is, the bright, deep, and vivid with eight chromatic hues, were selected from the practical color coordinate system, which are tried to be loyal to the news practice. We conducted a repeated measures ANOVA and correlation tests to clarify the open caption telop color effects. Our findings suggest that the open caption telop with deep-tone hues can facilitate the news to be perceived as more important, particularly in the negative context and vice versa. In some ways, this result partially applies to the news timeliness dimension, although its performance is relatively more complicated. The color performance in the perception of news novelty was observed to be the contrary with the other two dimensions. The 3D spaces created reveal that the news value integration by color highly depends on the news emotional context.
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- 2021
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10. Vertical distribution of airborne microorganisms over forest environments: A potential source of ice-nucleating bioaerosols
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Teruya Maki, Kentaro Hosaka, Kevin C. Lee, Yasuhiro Kawabata, Mizuo Kajino, Maoto Uto, Kazuyuki Kita, and Yasuhito Igarashi
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Atmospheric Science ,General Environmental Science - Published
- 2023
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11. Speech levels: Do we talk at the same level as we wish others to and assume they do?
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Jun Toyama, Kazuyo Nakabayashi, Yasuhiro Kawabata, Tetsunoshin Fujii, David R. R. Smith, and Akira Toyomura
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Acoustics and Ultrasonics ,Wish ,Psychology ,Social psychology ,Preference - Published
- 2020
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12. Probability Ellipse for Tropical Cyclone Track Forecasts with Multiple Ensembles
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Munehiko Yamaguchi and Yasuhiro Kawabata
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Atmospheric Science ,Meteorology ,Track (disk drive) ,Environmental science ,Tropical cyclone ,Predictability ,Ellipse - Published
- 2020
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13. Color Affects Face Perception in Schematic Faces.
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Fumiyo Takahashi and Yasuhiro Kawabata
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- 2012
14. Cultural difference of 'image of taste' in food color
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Yasuhiro Kawabata and Yuko Imai
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- 2019
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15. The difference between gender in the effect of face color for facial expression judgment
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Fumiyo Takahashi and Yasuhiro Kawabata
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medicine.medical_specialty ,Facial expression ,Face (geometry) ,medicine ,Audiology ,Psychology - Published
- 2019
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16. Postoperative ischemic events in patients undergoing carotid artery stenting using algorithmic selection for embolic protection
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Hidenori Miyake, Shunichi Fukuda, Tetsuya Tsukahara, Norio Nakajima, and Yasuhiro Kawabata
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Male ,medicine.medical_specialty ,Cerebrovacular Dieases ,Carotid arteries ,medicine.medical_treatment ,Carotid endarterectomy ,030204 cardiovascular system & hematology ,Embolic Protection Devices ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,Carotid Stenosis ,Radiology, Nuclear Medicine and imaging ,In patient ,cardiovascular diseases ,Selection (genetic algorithm) ,Aged ,Retrospective Studies ,Perioperative stroke ,Embolic protection ,Aged, 80 and over ,business.industry ,Patient Selection ,General Medicine ,Middle Aged ,Stroke ,medicine.anatomical_structure ,Ischemic Attack, Transient ,Cardiology ,Female ,Stents ,Patient Safety ,Neurology (clinical) ,business ,Algorithms ,Carotid Artery, Internal ,030217 neurology & neurosurgery ,Artery - Abstract
Purpose Carotid artery stenting (CAS) is a valuable alternative to carotid endarterectomy, especially in high-risk patients. However, the reported incidences of perioperative stroke and death remain higher than for carotid endarterectomy, even when using embolic protection devices (EPDs) during CAS. Our purpose was to evaluate 30-day major adverse events after CAS when selecting the most appropriate EPD. Methods We reviewed the clinical outcomes of 61 patients with 64 lesions who underwent CAS with EPDs. Patients who underwent CAS associated with thrombectomy and who had a preoperative modified Rankin scale score >3 were excluded from the analysis. The EPD was selected based on symptoms, carotid wall magnetic resonance imaging and lesion length, and we analyzed combined 30-day complication rates (transient ischemic attack, minor stroke, major stroke or death). Results Forty-nine patients were men and 12 were women. The median age was 72 years (range: 59–89 years) and 44 lesions were asymptomatic. A filter-type EPD was selected in 23 procedures, distal-balloon protection in 14 procedures and proximal-occlusive protection in 27 procedures. Two patients (3.1%) experienced a transient ischemic attack and one patient (1.6%) had a minor stroke within 30 days of the procedure. No patients experienced procedure-related morbidities (modified Rankin score >2) or death. Conclusions The perioperative stoke rate was low when we selected a proximal-occlusive-type EPD in high-risk patients with vulnerable carotid artery disease. Our algorithm for EPD selection was an effective tool in the perioperative management of carotid artery stenosis.
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- 2019
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17. An autopsy case after endovascular thrombectomy for cardioembolic stroke due to nonbacterial thrombotic endocarditis
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Ryo Ohtani, Ken Yasuda, Nagako Murase, Michikazu Nakamura, Yasuhiro Kawabata, and Takashi Ayaki
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Blood Platelets ,medicine.medical_specialty ,Multiple Organ Failure ,Myocardial Infarction ,Neuroimaging ,Autopsy ,Nonbacterial thrombotic endocarditis ,Metastasis ,03 medical and health sciences ,Fatal Outcome ,0302 clinical medicine ,Internal medicine ,Mitral valve ,Humans ,Medicine ,cardiovascular diseases ,Thrombus ,Contraindication ,Aged ,Thrombectomy ,business.industry ,Cerebral infarction ,Endovascular Procedures ,medicine.disease ,Magnetic Resonance Imaging ,medicine.anatomical_structure ,Endocarditis, Non-Infective ,cardiovascular system ,Cardiology ,Duodenum ,Mitral Valve ,Female ,Neurology (clinical) ,business ,030217 neurology & neurosurgery - Abstract
A 73-year-old women visited emergency department because of sudden right hemiplegia. She had a history of duodenum papilla cancer terminal stage and multiple liver metastasis. On admission, diffusion weighted images revealed high intensity area at left middle cerebral artery territory. In addition, 3D-TOF MRA depicted proximal part of the left internal carotid artery. We performed endovascular thrombectomy because low platelet count met contraindication of intravenous recombinant tissue plasminogen activator therapy. Although we could get partial recanalization of middle cerebral artery occlusion after thrombectomy, the patient eventually died due to multiple organ failure. Autopsy findings showed white thrombus on mitral valve and also left middle cerebral artery occluded by similar white thrombus without infective findings. The patient was finally diagnosed with nonbacterial thrombotic endocarditis due to white thrombus on the mitral valve. We should select appropriate mechanical thrombectomy devices with a case of cerebral infarction due to nonbacterial thrombotic endocarditis because its thrombus is often white thrombus and would be hard.
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- 2019
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18. Development of a Pediatric Dermatology Screening Tool Based on Two Parent-Reported Skin Symptoms: Comparison of Parental Recognition and Physician Diagnosis of Skin Symptoms of Infants and Toddlers
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Aya Goto, Yasuhiro Kawabata, Michio Murakami, and Hiroko Sato
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Parents ,medicine.medical_specialty ,Dermatology ,lcsh:Computer applications to medicine. Medical informatics ,Pediatric dermatitis ,030207 dermatology & venereal diseases ,03 medical and health sciences ,0302 clinical medicine ,Quality of life (healthcare) ,children ,Physicians ,Surveys and Questionnaires ,medicine ,Humans ,Screening tool ,030212 general & internal medicine ,Pediatric dermatology ,Child ,Original Research ,community health ,Community and Home Care ,business.industry ,lcsh:Public aspects of medicine ,Public Health, Environmental and Occupational Health ,Infant ,lcsh:RA1-1270 ,Skin symptoms ,Cross-Sectional Studies ,quality of life ,Child, Preschool ,Family medicine ,Community health ,lcsh:R858-859.7 ,Female ,General health ,business - Abstract
Aim The objective of the present study was to develop a tool for mothers to assess their children’s skin condition with the ultimate goal of its wider use in general health checkups for infants and toddlers. Methods This was a single-institution, cross-sectional study in Japan, targeting parents of 200 infants and toddlers who visited a dermatology clinic between December 2018 and March 2019. The parents completed a self-administered survey of the mother’s perception of her child’s dermatological symptoms, itchiness, and sleep status, and a quality-oflife assessment, using a nine-question version of the Quality of life in Primary Caregivers of children with Atopic Dermatitis questionnaire (QP9). The attending physician was asked to complete a form about the child’s dermatological condition and the treatment prescribed. The severity of the dermatological condition noted by the physician was compared with the combined response to the 3 perception items (dermatological condition, itchiness, and sleep) reported by the parents, in order to identify the optimal cutoff score. Results Of 200 parent questionnaires distributed, 198 (99% response rate) were returned and analyzed, along with the responses from 198 physician records (100% response rate). The optimal cutoff score was 2/3 for the total score (range 0-6) for 2 items, itchiness and sleep status (sensitivity 73%, specificity 64%). There was a significant difference in QP9 scores between the 2 groups categorized by the cutoff score Conclusions A pediatric dermatological screening tool based on 2 symptoms reported by the parents of children with atopic dermatitis was developed, and its precision and criterion-related validity were confirmed. This simple tool could help parents become better aware of their children’s skin condition and allow healthcare workers to provide adequate skin care advice. This practical tool could be widely applicable in primary child care and public health service settings.
- Published
- 2020
19. Measuring complex field waveforms of quadrature amplitude modulation optical signals using a spectrally slicing-and-synthesizing coherent optical spectrum analyzer
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Koji Igarashi, Yasuhiro Kawabata, and Naoki Urakawa
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QAM ,Physics ,Signal processing ,Optics ,Narrowband ,business.industry ,Phase noise ,Bandwidth (signal processing) ,Waveform ,Optical performance monitoring ,business ,Atomic and Molecular Physics, and Optics ,Quadrature amplitude modulation - Abstract
We propose a spectrally slicing-and-synthesizing coherent optical spectrum analyzer to measure complex field waveforms of quadrature amplitude modulation (QAM) optical signals with ultralong periods. The optical spectrum of a measured optical signal is divided into multiple narrowband spectral components, called slices. The slices are sequentially measured using low-speed coherent detection. After phase noise suppression and frequency fluctuation compensation on each slice, the measured slices are synthesized to recover the original signal spectrum. Our numerical and experimental results confirm that the proposed method can overcome the limitation of the measurement bandwidth because the signal spectrum can synthesize more than 100 slices. We experimentally demonstrate complex field measurements of 16QAM optical signals. Our method can measure high-speed optical complex field waveforms with no bandwidth limitation.
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- 2020
20. Cultural differences of 'taste sensation' in the coloring of food materials
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Yuko Imai and Yasuhiro Kawabata
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Cultural diversity ,Food material ,Psychology ,Taste sensation ,Social psychology - Published
- 2018
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21. The preference of two-color combinations and its reaction time on the space image
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Sheng Ai Jin and Yasuhiro Kawabata
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business.industry ,Computer vision ,Artificial intelligence ,Space (commercial competition) ,business ,Preference ,Image (mathematics) ,Mathematics - Published
- 2018
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22. The association between colors and emotions for emotional words and facial expressions
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Fumiyo Takahashi and Yasuhiro Kawabata
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General Chemical Engineering ,media_common.quotation_subject ,050109 social psychology ,Human Factors and Ergonomics ,Anger ,Stimulus (physiology) ,050105 experimental psychology ,Arousal ,0501 psychology and cognitive sciences ,Emotional expression ,facial expression ,media_common ,Facial expression ,Communication ,business.industry ,05 social sciences ,psychological evaluation ,Emotional words ,General Chemistry ,Sadness ,Surprise ,facial color ,Psychology ,business ,color emotion ,emotional word ,Cognitive psychology - Abstract
Color sensations are tied not only to other sensations, but also emotions. There have been many studies on this. One study regarding architectural color showed that colors were associated with mental status; for example, red relates to arousal, excitation, and stimulus. The purpose of the present study is to investigate how colors are evoked by emotions. The emotions were described both by emotional words and by schematic faces. Since facial expressions are accompanied by facial color, facial expressions should relate more closely to facial color than emotional words. Therefore, we used numerous color samples for our experiments to show discrimination sensitivity to stimuli in subtle differences of color. Some associations between colors and emotions were found, and the tendencies of associations were different among emotions. Anger, joy, surprise, sadness, and no emotion were connected to particular colors. The distribution of color responses in sadness was spread among bluish colors. The emotional tendencies, among anger, joy, surprise, and sadness, were similar in the two conditions of our experiment. However, in the schematic face condition, the color responses for all emotions were increased in the skin-colored samples. Thus, the context of the face elicited the color responses.
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- 2018
23. Pazopanib-mediated Long-term Disease Stabilization after Local Recurrence and Distant Metastasis of Primary Intracranial Leiomyosarcoma: A Case Report on the Efficacy of Pazopanib as a Salvage Therapy
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Hisateru Yasui, Yasuhiro Kawabata, Shunichi Fukuda, Satoru Kawarazaki, Tetsurou Yamamoto, Tomokazu Aoki, Satoru Sawai, and Tetsuya Tsukahara
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Leiomyosarcoma ,Fluorodeoxyglucose ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,lung metastasis ,Salvage therapy ,Case Report ,Magnetic resonance imaging ,leiomyosarcoma ,medicine.disease ,Pazopanib ,Meningioma ,03 medical and health sciences ,0302 clinical medicine ,Positron emission tomography ,Cyberknife ,030220 oncology & carcinogenesis ,pazopanib ,medicine ,Radiology ,local recurrence ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Primary intracranial leiomyosarcoma (LMS) is an extremely rare tumor of the central nervous system. Only sporadic case reports have been published, and therefore data regarding long-term prognosis remain scarce. A 76-year-old woman presented with a right parietal mass, which had grown rapidly in the month prior to admission. Neuroimaging showed a resemblance to intraosseous meningioma. Gross total resection of the tumor was achieved, and histological diagnosis confirmed LMS. Because positron emission tomography (PET) with fluorodeoxyglucose (FDG) just after the resection showed no abnormal uptake, we diagnosed the tumor as primary intracranial LMS. Follow-up PET at 16 months after treatment showed two foci of FDG uptake in the bilateral lungs. Histological diagnosis by surgical resection identified the lesions as lung metastases of LMS. In addition, follow-up head magnetic resonance imaging (MRI) at 31 months showed local recurrence, and we conducted salvage therapy using CyberKnife system (Accuray incorporated) and pazopanib. To date, for 15 months after local recurrence, she is alive with intracranial recurrent disease remained inactive.
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- 2018
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24. Change of color memory based on categorical color perception
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Mikuko Sasaki and Yasuhiro Kawabata
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Color vision ,Psychology ,Categorical variable ,Cognitive psychology - Published
- 2017
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25. Endovascular treatment of acute ischaemic stroke in octogenarians and nonagenarians compared with younger patients
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Yasuhiro Kawabata, Shunichi Fukuda, Hidenori Miyake, Norio Nakajima, and Tetsuya Tsukahara
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Male ,medicine.medical_specialty ,Cerebrovacular Dieases ,030204 cardiovascular system & hematology ,Endovascular therapy ,Multimodal Imaging ,Brain Ischemia ,03 medical and health sciences ,0302 clinical medicine ,Age Distribution ,Fibrinolytic Agents ,Internal medicine ,Ischaemic stroke ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,Prospective Studies ,Endovascular treatment ,Infusions, Intravenous ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Endovascular Procedures ,General Medicine ,Middle Aged ,Combined Modality Therapy ,humanities ,Stroke ,Treatment Outcome ,Reperfusion ,Cardiology ,Female ,Stents ,Neurology (clinical) ,business ,030217 neurology & neurosurgery ,Large vessel occlusion - Abstract
Purpose: Endovascular therapy for emergent large vessel occlusion has been established as the standard approach for acute ischaemic stroke. However, the effectiveness and safety of endovascular therapy in the very elderly population has not been proved. Objective: To determine the safety and effectiveness of endovascular therapy in octogenarians and nonagenarians. Methods: We retrospectively reviewed all patients who underwent endovascular therapy at two stroke centres between April 2012 and July 2018. Functional outcome was assessed using the modified Rankin scale at 90 days after stroke or at discharge. A favourable outcome was defined as a modified Rankin scale score of 0–2 or not worsening of the modified Rankin scale score before stroke. Outcome was compared between younger patients (aged 46–79 years, n = 40) and octogenarians and nonagenarians (aged 80–97 years, n = 19). Results: Octogenarian and nonagenarian patients had pre-stroke functional deficit (modified Rankin scale score >1) more frequently than younger patients (57.9% vs. 20.0%, respectively, P = 0.0059). No difference was observed between very elderly and younger patients in the rate of successful reperfusion (89.5% vs. 67.5%, respectively, P = 0.11), favourable functional outcome (47.4% vs. 45.0%, respectively, P = 1.00) and mortality (21.1% vs. 27.5%, respectively, P = 1.00). On multiple regression analysis, successful reperfusion, concomitant use of intravenous thrombolysis, and out-of-hospital onset were independent predictors of favourable outcome ( P = 0.0003, 0.015 and 0.028, respectively). Conclusions: Successful reperfusion, concomitant use of intravenous thrombolysis, and out-of-hospital onset were clinical predictors of favourable outcome. However, we did not observe an age-dependent effect of clinical outcome after endovascular therapy.
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- 2019
26. Preference Evaluation Based on Cognitive Psychology of the Quantity of Knots Present in Wood Wall Panels I
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Mikuko Sasaki, Naoto Saito, Koji Kawato, Kumiko Matsumoto, and Yasuhiro Kawabata
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knot area ratio ,040101 forestry ,0106 biological sciences ,Engineering ,todomatsu wood ,business.industry ,Context effect ,General Chemical Engineering ,psychological evaluation ,context effect ,04 agricultural and veterinary sciences ,01 natural sciences ,Psychological evaluation ,Knot (unit) ,010608 biotechnology ,0401 agriculture, forestry, and fisheries ,business ,wood interior panel ,Cognitive psychology - Abstract
This study examined the effects of the quantity of knots present in interior paneled walls of soft-wood through a preference evaluation. In this study, psychological evaluations were applied based on the ideas of cognitive psychology, such as the context effect, in which human perception not only depends on the object itself, but is also strongly influenced by the scene and the situation that surround the objects. To examine the ratio of knot area to panel area (KA/PA), the quantity of knots in the wall panels was set to four levels ranging from 0% to 1.32%. The scene chosen for subject evaluation was the living room of a residence. Photographs of four living rooms, each with different colored wallpaper and furniture arrangement were combined with the aforementioned wainscot wall panels. The preference evaluation of the four living rooms showed a decrease in subject preference with an increase of KA/PA. The rate of decrease in preference was slight in the range of 0-0.86%, but this rate then changed significantly at 1.32% with the increase of KA/PA. However, more than half of the subjects stated positive preferences that were within the range of 0.86% by that they either "like it" or "like it a little". The significance of the difference was checked statistically with the use of two-factor analysis of variance (ANOVA). The effect of KA/PA was evident while no significant difference was observed by the effect of room type and interaction. The results suggested that the subjects of the study prioritized the context of a residential living room over the impression of each living room.
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- 2016
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27. Preference Evaluation Based on Cognitive Psychology of the Quantity of Knots Present in Wood Wall Panels II
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Naoto Saito, Yasuhiro Kawabata, Mikuko Sasaki, Kumiko Matsumoto, Koji Kawato, and Makoto Imai
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Engineering ,business.industry ,General Chemical Engineering ,business - Published
- 2016
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28. Face color affects the emotional intensity in schematic face
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Fumiyo Takahashi and Yasuhiro Kawabata
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- 2020
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29. Venous Sinus Stenting for Transverse Sinus Stenosis Associated with Leptomeningeal Carcinomatosis in a Patient with Epidermal Growth Factor Receptor-Mutated Lung Cancer: A Case Report
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Masafumi Kurimoto, Norio Nakajima, Mamoru Takahashi, Yasuji Terada, Yasuhiro Kawabata, Yasumasa Yamamoto, Shintaro Toda, and Hidenori Miyake
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medicine.medical_specialty ,Palliative care ,Lung Neoplasms ,medicine.diagnostic_test ,business.industry ,Lumbar puncture ,General Medicine ,Articles ,030204 cardiovascular system & hematology ,Cranial Sinuses ,medicine.disease ,Thrombosis ,03 medical and health sciences ,Stenosis ,0302 clinical medicine ,medicine.anatomical_structure ,Meningeal carcinomatosis ,030220 oncology & carcinogenesis ,Medicine ,Radiology ,business ,Meningeal Carcinomatosis ,Sinus (anatomy) ,Cerebral angiography ,Intracranial pressure - Abstract
Patient: Male, 57-year-old Final Diagnosis: Leptomeningeal carcinomatosis Symptoms: Headache • visual acuity loss Medication: — Clinical Procedure: Venous sinus stenting Specialty: Oncology Objective: Unusual or unexpected effect of treatment Background: Cerebral venous sinus obstruction associated with leptomeningeal carcinomatosis is an extremely rare complication of advanced non-small-cell lung cancer. There is little information available on the efficacy of therapeutic options because of its rarity and extremely poor prognosis. Case Report: A 57-year-old man presented with severe headache, vomiting, and visual loss for 1 month. Head magnetic resonance venography (MRV) showed occlusion of the left transverse sinus. Gd-enhanced MRI showed no abnormal enhancement. Lumbar puncture intracranial pressure was higher than 40 cmH2O. Positive cerebrospinal fluid tumor cytology confirmed the diagnosis of leptomeningeal carcinomatosis (LC). The headache was relieved by repeated lumbar punctures, and ventriculo-peritoneal shunt was performed. Cerebral angiography showed severe stenosis of the left transverse sinus without thrombosis, and significant delay of cerebral circulation. The transverse sinus stenosis was judged to be contributing to raised intracranial pressure, and the patient underwent left transverse sinus stent placement. After the procedure, his visual acuity improved, the visual field was enlarged, and his headache could be controlled by medication. Follow-up Gd-enhanced MRI showed dural enhancement and spinal dissemination. Because molecular biology of the surgical specimen showed epidermal growth factor receptor (EGFR)-activating mutations, he was treated with osimertinib for 2 months. He survived for 8 months following the diagnosis of LC and left transverse sinus stenosis. Conclusions: Venous sinus stenting can offer an effective palliative interventional option for symptom relief of severe headache and visual symptoms, even in the end stage of malignancy.
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- 2020
30. A compact led lidar system fitted for a mars rover – design and ground experiment
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Hiroaki Kuze, Hiroki Senshu, Yasuhiro Kawabata, George Hashimoto, Naohito Otobe, Naohiro Manago, Prane Mariel Ong, and Tatsuo Shiina
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010504 meteorology & atmospheric sciences ,business.industry ,Physics ,QC1-999 ,Transmitter ,Cassegrain reflector ,Field of view ,Mars Exploration Program ,01 natural sciences ,500 kHz ,010305 fluids & plasmas ,Mars rover ,Lidar ,Optics ,0103 physical sciences ,business ,Dust devil ,Geology ,0105 earth and related environmental sciences - Abstract
A compact LED lidar was constructed and fieldtested with the aim to observe the Mars’ dust devils. To be able to fit it on the Mars rover, a specialized Cassegrain telescope was designed to be within a 10 cm-cube, with a field of view of 3mrad. The transmitter has 385 nm LED light source with 3 cmϕ opening, 70mrad divergence, 0.75W (7.5nJ/10ns) pulse power, and 500 kHz repetition frequency. The configuration of the optical system is biaxial to easily configure the overlap between their optical axes.
- Published
- 2018
31. A psychological study on harmony of two colors combination in things and space
- Author
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Sheng Ai Jin and Yasuhiro Kawabata
- Subjects
Harmony (color) ,Computer science ,Aesthetics - Published
- 2015
- Full Text
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32. Color Effect on Angry and Sad Schematic Face
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Fumiyo Takahashi and Yasuhiro Kawabata
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business.industry ,Face (geometry) ,Color effect ,Schematic ,Computer vision ,Artificial intelligence ,Psychology ,business - Published
- 2015
- Full Text
- View/download PDF
33. Endovascular embolization of branch-incorporated cerebral aneurysms
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Shunichi Fukuda, Tomokazu Aoki, Takumi Morita, Takuya Nakazawa, Yasuhiro Kawabata, Tetsuya Tsukahara, and Satoru Kawarazaki
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Adult ,Male ,medicine.medical_specialty ,Subarachnoid hemorrhage ,medicine.medical_treatment ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Aneurysm ,Modified Rankin Scale ,medicine.artery ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,Posterior communicating artery ,Embolization ,Aged ,Retrospective Studies ,Aged, 80 and over ,Endovascular coiling ,medicine.diagnostic_test ,business.industry ,Intracranial Aneurysm ,General Medicine ,Middle Aged ,medicine.disease ,Embolization, Therapeutic ,Surgery ,Cerebral Angiography ,Treatment Outcome ,Angiography ,Feasibility Studies ,Female ,Stents ,Neurology (clinical) ,business ,Neurovascular Imaging ,030217 neurology & neurosurgery ,Cerebral angiography - Abstract
Objectives The aim of this study was to examine the feasibility, technique, and clinical and angiographic outcomes of endovascular coiling to treat a cerebral aneurysm with a branch incorporated into the aneurysmal wall. Methods From 2012 to 2016, 25 patients with 26 cerebral aneurysms having a branch incorporated into the aneurysm (9 unruptured, 17 ruptured) were treated to prevent rupture or re-bleeding from the sac while preserving the incorporated branch by using single-catheter ( n = 18), balloon-remodeling ( n = 4), stent-assisted coiling ( n = 3), or double-catheter ( n = 1) techniques. Results Endovascular coiling was conducted in 26 procedures without angiographic occlusion of the incorporated branch. Post-embolization angiography revealed near-complete occlusion ( n = 8; 30.7%), neck remnant ( n = 13; 50%), and incomplete occlusion ( n = 5; 19.3%) aneurysms. Thromboembolisms were observed in four (15.4%) patients during or after the procedure. A procedure-related neurological deficit was observed in one (3.8%) patient. When patients with a preictal modified Rankin Scale (mRS) score of 3 presenting with grade 5 subarachnoid hemorrhage were excluded, all patients had favorable outcomes (mRS 0–2). Six (23.1%) recurrent aneurysms were observed during follow-up, five of which were treated endovascularly at 5–22 months without complication. The location of an aneurysm at the ICA-posterior communicating artery associated with the dominant-type posterior communicating artery was significantly associated with recurrence ( p = 0.041). Conclusions Cerebral aneurysms with an incorporated branch were safely treated using conventional endovascular coiling. However, treatment durability was unsatisfactory, especially for dominant-type ICA-posterior communicating artery aneurysms.
- Published
- 2017
34. Repeated Short-Term Recurrence of Chronic Subdural Hematoma Associated with Metastasis to Hematoma Capsule Originating from Extracranial Malignant Tumor
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Tsuyoshi Terashima, Norio Nakajima, Hiroyuki Ikeda, Yasuhiro Kawabata, Hidenori Miyake, and Susumu Miyamoto
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Male ,medicine.medical_specialty ,Middle meningeal artery ,medicine.medical_treatment ,Adenocarcinoma ,Metastasis ,03 medical and health sciences ,0302 clinical medicine ,Hematoma ,Recurrence ,Stomach Neoplasms ,medicine.artery ,medicine ,Humans ,Embolization ,Craniotomy ,Aged ,business.industry ,Brain Neoplasms ,Cancer ,Capsule ,medicine.disease ,030220 oncology & carcinogenesis ,Hematoma, Subdural, Chronic ,Surgery ,Neurology (clinical) ,Radiology ,business ,030217 neurology & neurosurgery - Abstract
Background The recurrence rate of chronic subdural hematoma (CSDH) after trepanation is relatively high and involves various factors. We encountered an extremely rare case in which metastasis of an extracranial malignant tumor to the hematoma capsule was thought to be causing short-term repeated recurrences of CSDH. Case Description The patient was a 74-year-old man who had undergone bur hole evacuation of left CSDH 7 months earlier and had been receiving chemotherapy for stage IV gastric cancer for the preceding 6 months. He presented with symptoms of right hemiparesis and was diagnosed with left CSDH. Bur hole evacuation was performed twice, but the hematoma enlarged again both times within a short period. A third bur hole evacuation was performed after middle meningeal artery embolization, but the hematoma again enlarged shortly thereafter. Hematoma enlargement was finally suppressed by extracting the hematoma capsule under craniotomy. In histopathologic examinations, hematoxylin-eosin staining showed poorly differentiated adenocarcinoma primarily along the luminal side of the hematoma capsule and immunohistochemical staining showed results identical to findings from the existing gastric cancer. Pathologic results confirmed metastasis of the gastric cancer to the hematoma capsule, and this was considered to be the cause of short-term repeated recurrence of CSDH. Conclusions To the best of our knowledge, this is the first report of metastasis to a hematoma capsule originating from an extracranial malignant tumor. The clinical course in the present case suggests metastasis of extracranial malignant tumor to the CSDH capsule as an extremely rare cause of recurrence.
- Published
- 2017
35. Predictors of Cardioembolic Stroke in Japanese Patients with Atrial Fibrillation in the Fushimi AF Registry
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Tetsuya Tsukahara, Masaharu Akao, Yasuhiro Kuwata, Tomokazu Aoki, Ryo Ohtani, Satoru Kawarazaki, Naohiro Yonemoto, Shunichi Fukuda, Masaki Takata, Yasuhiro Kawabata, Michikazu Nakamura, Makoto Sainouchi, Nagako Murase, Ken Yasuda, Yuichi Masuda, and Masahiro Gotou
- Subjects
Male ,lcsh:Diseases of the circulatory (Cardiovascular) system ,Time Factors ,Comorbidity ,030204 cardiovascular system & hematology ,0302 clinical medicine ,Japan ,Recurrence ,Risk Factors ,Atrial Fibrillation ,Odds Ratio ,Prospective Studies ,Registries ,Prospective cohort study ,Stroke ,Aged, 80 and over ,education.field_of_study ,Incidence ,Age Factors ,Atrial fibrillation ,Middle Aged ,Prognosis ,Neurology ,Intracranial Embolism ,Cohort ,Female ,Cardiology and Cardiovascular Medicine ,Cohort study ,medicine.medical_specialty ,Population ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,cardiovascular diseases ,education ,Stroke subtype ,Aged ,Chi-Square Distribution ,business.industry ,Cardioembolic stroke ,Body Weight ,Odds ratio ,medicine.disease ,Infarct volume ,Logistic Models ,lcsh:RC666-701 ,Multivariate Analysis ,Neurology (clinical) ,business ,030217 neurology & neurosurgery ,Kidney disease - Abstract
Background: Large-scale clinical trials have analyzed risk factors for any ischemic stroke in patients with atrial fibrillation (AF). However, the risk factors for cardioembolic stroke (CES), specifically, have not been reported. To clarify the risk factors for CES and clinically significant cardioembolic infarction, we examined the incidence of CES and larger infarct volume (IV) (> 30 mL) CES, employing the Fushimi AF Registry, a community-based prospective cohort of AF patients in the Fushimi ward, Kyoto, Japan. Methods: A total of 4,182 Fushimi AF patients were enrolled from March 2011 to December 2014. The risk factors for CES were evaluated using multivariate analysis. Results: Of 4,182 patients enrolled, 3,749 patients were observed for ≥1 year. During the follow-up period (mean duration, 979 ± 7.7 days), 91/3,749 patients experienced a CES (2.43%). Significant risk factors associated with CES were older age (odds ratio [OR], 1.31; 95% confidence interval [CI], 1.01–1.72; p = 0.046), low body weight (OR, 1.30; 95% CI, 1.03–1.65; p = 0.033), sustained AF (OR, 1.67; 95% CI, 1.05–2.71; p = 0.034), and previous stroke or transient ischemic attack (TIA) (OR, 1.94; 95% CI, 1.22–3.06; p = 0.004). Predictors of a large IV were chronic kidney disease (CKD) (OR, 2.08; 95% CI, 1.09–4.05; p = 0.027) and previous stroke/TIA (OR, 2.27; 95% CI, 1.19–4.24; p = 0.011). Conclusions: In this population-based cohort of Japanese patients with AF, in addition to previous stroke/TIA and older age, sustained AF and low body weight emerged as risk factors for CES, as opposed to any stroke, which may have a different risk profile. Patients with CKD or previous stroke/TIA who developed cardioembolic infarction exhibited more advanced severity. There is a need for direct oral anticoagulants that can be used safely in patients with comorbid AF and CKD.
- Published
- 2017
36. Venous Sinus Stenting for Transverse Sinus Stenosis Associated with Leptomeningeal Carcinomatosis in a Patient with Epidermal Growth Factor Receptor-Mutated Lung Cancer: A Case Report.
- Author
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Yasuhiro Kawabata, Norio Nakajima, Hidenori Miyake, Yasumasa Yamamoto, Shintaro Toda, Yasuji Terada, Mamoru Takahashi, and Masafumi Kurimoto
- Subjects
- *
MENINGEAL cancer , *EPIDERMAL growth factor , *SINUS thrombosis , *LUNG cancer , *EPIDERMAL growth factor receptors , *NON-small-cell lung carcinoma , *STENOSIS - Abstract
Background: Cerebral venous sinus obstruction associated with leptomeningeal carcinomatosis is an extremely rare complication of advanced non-small-cell lung cancer. There is little information available on the efficacy of therapeutic options because of its rarity and extremely poor prognosis. Case Report: A 57-year-old man presented with severe headache, vomiting, and visual loss for 1 month. Head magnetic resonance venography (MRV) showed occlusion of the left transverse sinus. Gd-enhanced MRI showed no abnormal enhancement. Lumbar puncture intracranial pressure was higher than 40 cmH2O. Positive cerebrospinal fluid tumor cytology confirmed the diagnosis of leptomeningeal carcinomatosis (LC). The headache was relieved by repeated lumbar punctures, and ventriculo-peritoneal shunt was performed. Cerebral angiography showed severe stenosis of the left transverse sinus without thrombosis, and significant delay of cerebral circulation. The transverse sinus stenosis was judged to be contributing to raised intracranial pressure, and the patient underwent left transverse sinus stent placement. After the procedure, his visual acuity improved, the visual field was enlarged, and his headache could be controlled by medication. Follow-up Gd-enhanced MRI showed dural enhancement and spinal dissemination. Because molecular biology of the surgical specimen showed epidermal growth factor receptor (EGFR)-activating mutations, he was treated with osimertinib for 2 months. He survived for 8 months following the diagnosis of LC and left transverse sinus stenosis. Conclusions: Venous sinus stenting can offer an effective palliative interventional option for symptom relief of severe headache and visual symptoms, even in the end stage of malignancy. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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37. The effect of background colors to the evaluation of temperature
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Yasuhiro Kawabata and Meng Yu
- Published
- 2013
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38. Color preference and the influence of learning in color discrimination
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Yasuhiro Kawabata and Sen Ri
- Subjects
business.industry ,Pattern recognition ,Artificial intelligence ,Psychology ,business ,Color discrimination ,Preference - Published
- 2013
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39. A Cross-Cultural Comparison of Color-Influence in Perception of Food Deliciousness
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Yasuhiro Kawabata and Chenzhuo Wang
- Subjects
Perception ,media_common.quotation_subject ,Psychology ,Social psychology ,Cross-cultural studies ,media_common - Published
- 2013
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40. The influence that the contextual factors give to regret
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Yurie Tajima and Yasuhiro Kawabata
- Subjects
Regret ,Psychology ,Social psychology - Published
- 2013
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41. The effect of color blending in common scene Relevance between back ground color and task contents
- Author
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Yu Wang, Yasuhiro Kawabata, and Miho Kawabata
- Subjects
Computer science ,business.industry ,Relevance (information retrieval) ,Artificial intelligence ,computer.software_genre ,business ,computer ,Natural language processing ,Task (project management) - Published
- 2013
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42. Color Effect on Face Recognition
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Fumiyo Takahashi and Yasuhiro Kawabata
- Subjects
business.industry ,Computer science ,Color effect ,Computer vision ,Artificial intelligence ,business ,Facial recognition system - Published
- 2013
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43. LED-powered mini-lidar for martian atmospheric dust studies
- Author
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Yasuhiro Kawabata, George Hashimoto, Hiroki Senshu, Naohito Otobe, Sonoko Yamada, and Tatsuo Shiina
- Subjects
Martian ,Lidar ,Environmental science ,Atmospheric dust ,Atmospheric sciences ,Astrobiology - Published
- 2016
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44. LED minilidar for Mars rover
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Yasuhiro Kawabata, George Hashimoto, Sonoko Yamada, Hiroki Senshu, Tatsuo Shiina, and Naohito Otobe
- Subjects
Pulse repetition frequency ,Engineering ,010504 meteorology & atmospheric sciences ,business.industry ,Atmosphere of Mars ,01 natural sciences ,Wind speed ,law.invention ,Mars rover ,Telescope ,Optics ,Lidar ,law ,0103 physical sciences ,business ,010303 astronomy & astrophysics ,Dust devil ,0105 earth and related environmental sciences ,Wind tunnel - Abstract
A mini-lidar to observe the activity of Martian atmosphere is developed. The 10cm-cube LED mini-lidar was designed to be onboard a Mars rover. The light source of the mini-lidar is a high powered LED of 385nm. LED was adopted as light source because of its toughness against circumference change and physical shock for launch. The pulsed power and the pulse repetition frequency of LED beam were designed as 0.75W (=7.5nJ/10ns) and 500kHz, respectively. Lidar echoes were caught by the specially designed Cassegrain telescope, which has the shorter telescope tube than the usual to meet the 10cm-cube size limit. The high-speed photon counter was developed to pursue to the pulse repetition frequency of the LED light. The measurement range is no shorter than 30m depending back-ground condition. Its spatial resolution was improved as 0.15m (=1ns) by this photon counter. The demonstrative experiment was conducted at large wind tunnel facility of Japan Meteorological Agency. The measurement target was smoke of glycerin particles. The smoke was flowed in the wind tunnel with wind speed of 0 – 5m. Smoke diffusion and its propagation due to the wind flow were observed by the LED mini-lidar. This result suggests that the developed lidar can pursue the structure and the motion of dust devil of >2m.
- Published
- 2016
- Full Text
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45. Does simile comprehension differ from metaphor comprehension? A functional MRI study
- Author
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Hiroki Motoyama, Yasuhiro Kawabata, Jun-ichi Abe, Hiroaki Itoh, Akira Toyomura, and Midori Shibata
- Subjects
Linguistics and Language ,Metaphor ,Cognitive Neuroscience ,media_common.quotation_subject ,Simile ,Inference ,Experimental and Cognitive Psychology ,Meaning (non-linguistic) ,Literal and figurative language ,Language and Linguistics ,Speech and Hearing ,medicine ,Reaction Time ,Humans ,media_common ,Language ,Brain Mapping ,medicine.diagnostic_test ,fMRI ,Brain ,Inferior frontal gyrus ,Magnetic Resonance Imaging ,humanities ,Comprehension ,Speech Perception ,Literal sentence ,Functional magnetic resonance imaging ,Psychology ,Sentence ,Cognitive psychology - Abstract
Since Aristotle, people have believed that metaphors and similes express the same type of figurative meaning, despite the fact that they are expressed with different sentence patterns. In contrast, recent psycholinguistic models have suggested that metaphors and similes may promote different comprehension processes. In this study, we investigated the neural substrates involved in the comprehension of metaphor and simile using functional magnetic resonance imaging (fMRI) to evaluate whether simile comprehension differs from metaphor comprehension or not. In the metaphor and simile sentence conditions, higher activation was seen in the left inferior frontal gyrus. This result suggests that the activation in both metaphor and simile conditions indicates similar patterns in the left frontal region. The results also suggest that similes elicit higher levels of activation in the medial frontal region which might be related to inference processes, whereas metaphors elicit more right-sided prefrontal activation which might be related to figurative language comprehension.
- Published
- 2012
46. Clinical predictors of delayed cerebral ischemia after subarachnoid hemorrhage: first experience with coil embolization in the management of ruptured cerebral aneurysms
- Author
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Masahiro Sawada, Yasuhiro Kawabata, Fumiaki Isaka, Yasushi Ueno, Fumihiko Horikawa, and Hidenori Miyake
- Subjects
Adult ,Male ,medicine.medical_specialty ,Time Factors ,Subarachnoid hemorrhage ,medicine.medical_treatment ,Ischemia ,Aneurysm, Ruptured ,Postoperative Complications ,Predictive Value of Tests ,Modified Rankin Scale ,medicine ,Humans ,In patient ,cardiovascular diseases ,Aged ,Coil embolization ,Aged, 80 and over ,business.industry ,Endovascular Procedures ,Disease Management ,Intracranial Aneurysm ,General Medicine ,Clipping (medicine) ,Middle Aged ,Subarachnoid Hemorrhage ,medicine.disease ,Embolization, Therapeutic ,nervous system diseases ,Surgery ,Hydrocephalus ,Anesthesia ,Female ,Neurology (clinical) ,business ,Clinical risk factor ,Platelet Aggregation Inhibitors - Abstract
The purpose of this study was to clarify the clinical predictors of delayed cerebral ischemia (DCI) after subarachnoid hemorrhage (SAH).102 patients with ruptured cerebral aneurysms were treated (77 by clipping and 25 by coiling). 40 patients were male and 62 were female. Median age was 59 years (range 31-88). The modified Rankin Scale was used to assess functional outcomes 3 months after treatment or at discharge. The associations between potential clinical risk factors and DCI after SAH were assessed using the χ(2) test.52 patients (51.0%) had a good outcome and 13 patients (12.7%) died despite treatment. DCI was observed in 26 patients and hydrocephalus was observed in 37 patients. There were marginal differences in clinical outcomes between the treatment groups (p=0.053), mainly because functional outcomes were significantly superior in the coiling group (p=0.04) in patients with severe SAH. DCI was seen less frequently in the coiling group than in the clipping group (4.0% vs 32.4%, p=0.001). The presence of hydrocephalus was significantly associated with the occurrence of DCI (p0.001). Multivariate logistic regression analysis also showed that the treatment modality and the presence of hydrocephalus were independent risk factors for DCI.DCI was less frequently observed in the coiling group, and clinical outcomes were also superior in the coiling group, especially for patients with severe SAH. The results showed a significant correlation between DCI and hydrocephalus.
- Published
- 2011
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47. Long term outcomes in patients with intracranial germinomas: a single institution experience of irradiation with or without chemotherapy
- Author
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Yoshiki Arakawa, Nobuo Hashimoto, Jun A. Takahashi, Mitsuaki Shirahata, and Yasuhiro Kawabata
- Subjects
Adult ,Male ,Cancer Research ,medicine.medical_specialty ,Time Factors ,Neurology ,Adolescent ,medicine.medical_treatment ,Disease-Free Survival ,Human chorionic gonadotropin ,Drug Therapy ,Humans ,Medicine ,In patient ,Longitudinal Studies ,Irradiation ,Child ,Retrospective Studies ,Chemotherapy ,Brain Neoplasms ,business.industry ,Radiation field ,Radiotherapy Dosage ,Retrospective cohort study ,Magnetic Resonance Imaging ,Surgery ,Treatment Outcome ,Oncology ,Female ,Germinoma ,Neurology (clinical) ,Cranial Irradiation ,Tomography, X-Ray Computed ,business ,Craniospinal - Abstract
Complete remission can be achieved soon after irradiation in patients with intracranial germinoma. This study aimed to analyze the follow-up outcome of intracranial germinoma patients. About 39 intracranial germinoma patients (29 males and 10 females; average age, 15 years; range, 7-27 years) treated at Kyoto University Hospital from 1978 to 2004 were included in the study group. Six patients had multifocal disease at initial diagnosis, and 10 had human chorionic gonadotropin (HCG)-producing tumors. Thirteen patients were treated with craniospinal axis irradiation, 6 with whole-brain irradiation, 17 with whole-ventricle irradiation, and 3 with local field irradiation. Since 1997, 15 patients were treated with reduced-dose whole-ventricle irradiation (median, 23.4 Gy; range, 20.4-27 Gy) followed by a local boost (median, 40.8 Gy; range, 36-54 Gy) combined with chemotherapy. The median follow-up was 94 months (18 months to 25 years). The 5- and 10-year overall survival (OS) rates of the entire group were 97 and 90%, respectively. The 5- and 10-year progression-free survival (PFS) rates of the entire group were 91 and 87%, respectively. The 8-year OS and PFS in 15 patients treated by whole-ventricle irradiation combined with chemotherapy were 100% and 92%, respectively. Four patients had recurrences within a median period of 59.5 months (51-85 months). All relapses occurred outside the radiation fields. Tumor site, tumor size, HCG production, multifocal disease and radiation dose to the primary site or whole ventricle did not significantly affect PFS. All initial recurrences of intracranial germinoma occurred at the distant site out of the radiation field. Our data suggested that reduced doses to the whole ventricle, combined with chemotherapy, should be sufficiently effective in patients with intracranial germinoma.
- Published
- 2008
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48. Successful endovascular treatment of a dissecting aneurysm of vertebral artery associated with double origin of the posterior inferior cerebellar artery
- Author
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Shunichi Fukuda, Tetsuya Tsukahara, Yasuhiro Kawabata, Satoru Kawarazaki, and Tomokazu Aoki
- Subjects
medicine.medical_specialty ,Subarachnoid hemorrhage ,Vertebral artery ,Vertebral artery dissection ,Cerebral arteries ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Aneurysm ,medicine.artery ,Cerebellum ,Medicine ,Humans ,Lateral Medullary Syndrome ,Vertebral Artery Dissection ,Lateral medullary syndrome ,medicine.diagnostic_test ,business.industry ,Endovascular Procedures ,Digital subtraction angiography ,Cerebral Arteries ,Middle Aged ,medicine.disease ,Radiography ,Stroke ,Posterior inferior cerebellar artery ,Treatment Outcome ,Female ,Radiology ,business ,030217 neurology & neurosurgery - Abstract
BackgroundDouble origin of the posterior inferior cerebellar artery (DOPICA) has been rarely reported in the literature, with a reported incidence of 1.45%. In contrast, a high concurrence rate of DOPICA and vertebral artery dissecting aneurysm has been reported.Clinical presentationA 61-year old woman presented with vomiting and diplopia with preceding headache. Magnetic resonance imaging (MRI) showed fresh infarction of the left lateral medulla and a vertebral artery dissecting aneurysm of the left vertebral artery. The next day, she exhibited transient loss of consciousness and worsening of headache, and MRI depicted subarachnoid hemorrhage. Four-vessel digital subtraction angiography showed a posterior inferior cerebellar artery (PICA) arising both intracranially and extracranially from the left vertebral artery. Although the dissecting lesion involved the V3 and V4 portion, it did not involve an extracranially originating PICA. Internal trapping of the V3 and V4 portion was chosen as the extracranial channel was expected to supply the PICA territory. This procedure was safely performed.ConclusionEarly endovascular intervention should be considered in the treatment of dissecting aneurysm of vertebral artery associated with DOPICA for patients with relatively long lesions even in unruptured cases.
- Published
- 2015
49. A COMPACT LED LIDAR SYSTEM FITTED FOR A MARS ROVER – DESIGN AND GROUND EXPERIMENT.
- Author
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Ong, Prane Mariel B., Tatsuo Shiina, Naohiro Manago, Hiroaki Kuze, Hiroki Senshu, Naohito Otobe, George Hashimoto, and Yasuhiro Kawabata
- Subjects
LIGHT emitting diodes ,DUST & the environment ,DUST devils ,ATMOSPHERIC aerosols ,ICE clouds - Abstract
A compact LED lidar was constructed and fieldtested with the aim to observe the Mars’ dust devils. To be able to fit it on the Mars rover, a specialized Cassegrain telescope was designed to be within a 10 cm-cube, with a field of view of 3mrad. The transmitter has 385 nm LED light source with 3 cmΦ opening, 70mrad divergence, 0.75W (7.5nJ/10ns) pulse power, and 500 kHz repetition frequency. The configuration of the optical system is biaxial to easily configure the overlap between their optical axes. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
50. Epithelioid Sarcoma Associated with Lung Adenocarcinoma
- Author
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Shoichiro Yano, Keiichi Nakagawa, Kunihiko Tamaki, Hitoshi Okochi, Akihiko Asahina, Shinji Kagami, Yasuhiro Kawabata, Hidehisa Saeki, and Takeo Idezuki
- Subjects
Male ,Pathology ,medicine.medical_specialty ,Lung Neoplasms ,Skin Neoplasms ,medicine.diagnostic_test ,business.industry ,Epithelioid sarcoma ,CD34 ,Sarcoma ,Dermatology ,General Medicine ,Lung biopsy ,Adenocarcinoma ,Middle Aged ,medicine.disease ,Neoplasms, Multiple Primary ,Skin biopsy ,Carcinoma ,Humans ,Medicine ,business ,Epithelioid cell - Abstract
Epithelioid sarcoma is an uncommon soft tissue malignancy which is often misdiagnosed as necrobiotic granuloma or chronic inflammation. Many patients have local recurrence and distant metastasis because of its infiltrating growth. We report a 49-year-old Japanese man who had an ulcer with surrounding erythema on the left forearm after he sustained a bruise on this spot. His mother and father had died of rectal and bladder carcinoma, respectively, and he had also had a seminoma previously. Therefore, there was familial accumulation of malignancies. A skin biopsy revealed polygonal, plump, or spindle-shaped epithelioid cells and lymphocytes infiltrating through the dermis. Immunohistochemical studies showed positive staining for cytokeratins, epithelial membrane antigen, CD34 and vimentin and negative staining for desmin, CD68, HHF-35, 1A4 and p53. These clinical and histological features were diagnostic of epithelioid sarcoma. CT scans detected nodules in the right lung. A lung biopsy revealed that he had well-differentiated adenocarcinoma which expressed p53. Mutations in the TP53 gene were not searched for. We selected conservative treatment because the patient did not want surgical wide resection or amputation. Therefore, radiation, thermotherapy, application of 0.5% doxorubicin hydrochloride ointment and right lower lobectomy with lymph node dissection were performed. The size of the ulcer and the tumor invasion along the fasciae of muscles were decreased, however, metastasis of the epithelioid sarcoma was detected in the lymph node of the left axilla four years after the diagnosis.
- Published
- 2005
- Full Text
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