Yamada, Yoshitake

写真a

Affiliation

School of Medicine, Department of Radiology (Diagnostic Radiology) ( Shinanomachi )

Position

Associate Professor

External Links

Profile 【 Display / hide

  • Sep 2005-present: Board Certified Membership of the Japanese Society of Internal Medicine
    Sep 2010-present: Board Certified Diagnostic Radiologist of the Japan Radiological Society
    Aug 2013-present: Specialist in Positron Emission Tomography in the Japanese Board of Nuclear Medicine
    July 2015-present: Specialist in the Japanese Board of Nuclear Medicine
    October 2018-present: Board Certified Senior Fellow of the Japan Society of Ultrasonics in Medicine

Career 【 Display / hide

  • 2017.01
    -
    Present

    Department of Radiology, Keio University School of Medicine

  • 2016.01
    -
    2016.12

    Harvard Medical School, Brigham and Women’s Hospital , Radiology

  • 2010.04
    -
    2015.12

    Department of Radiology, Keio University School of Medicine

  • 2008.04
    -
    2010.03

    Department of Radiology, Nippon Koukan Hosptal

  • 2006.04
    -
    2008.03

    Department of Radiology, Keio University School of Medicine

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Academic Background 【 Display / hide

  • 1996.04
    -
    2002.03

    Keio University, School of Medicine

    University, Graduated

  • 2010.04
    -
    2013.03

    Keio University, 医学研究科

    Graduate School, Graduated, Doctoral course

Academic Degrees 【 Display / hide

  • 博士(医学), Keio University, Coursework, 2013.03

Licenses and Qualifications 【 Display / hide

  • Board certified diagnostic radiologist of the Japan Radiological Society, 2010.09

  • Specialist in the Japanese Board of Nuclear Medicine, 2015.07

  • Specialist in Positron Emission Tomography in the Japanese Board of Nuclear Medicine, 2013.08

  • Board Certified Fellow of the Japan Society of Ultrasonics in Medicine, 2018.10

  • 日本乳がん検診精度管理中央機構 検診マンモグラフィ読影認定医(指導医認定 AS), 2008.10

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Research Areas 【 Display / hide

  • Life Science / Radiological sciences

Research Keywords 【 Display / hide

  • Diagnostic Radiology

  • CT

  • Chest imaging

  • Cardiovascular imaging

  • Abdominal imaging

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Research Themes 【 Display / hide

  • Multidetector computed tomography, 

    2010.04
    -
    Present

  • Chest imaging, 

    2010.04
    -
    Present

  • Cardiovascular imaging, 

    2010.04
    -
    Present

  • Abdominal imaging, 

    2010.04
    -
    Present

  • Dual-energy CT, 

    2010.04
    -
    Present

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Books 【 Display / hide

  • ここから始める循環器疾患のCT・MRI

    Yoshitake YAMADA, 学研メディカル秀潤社, 2020.04

    Scope: fractional flow reserve computed from CT (FFRCT),  Contact page: p.102-103

  • 救急疾患の鑑別診断のポイント

    Hiroaki Sugiura, Yasuhiro Minami, Yoshitake Yamada, Masahiro Jinzaki, 学研メディカル秀潤社, 2019.09

    Scope: 肺間質影の鑑別,  Contact page: p.210-215

  • 救急疾患の鑑別診断のポイント

    Yasuhiro Minami, Yoshitake Yamada, Hiroaki Sugiura, Masahiro Jinzaki, 学研メディカル秀潤社, 2019.09

    Scope: 肺野空洞性病変の鑑別,  Contact page: p.204-209

  • Abdominal CT

    Yoshitake YAMADA, メディカルサイエンスインターナショナル, 2017.04

    Scope: XII. 腹部大動脈・下大静脈,  Contact page: p591-612

  • Abdominal CT

    Yoshitake YAMADA, メディカルサイエンスインターナショナル, 2017.04

    Scope: II.検査法,  Contact page: p37-44

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Papers 【 Display / hide

  • Three-dimensional in vivo kinematics of the subtalar joint during weight-bearing standing on coronal-wedge surfaces using upright computed tomography.

    Ogihara N, Seki H, Sujino A, Ito A, Matsumoto Y, Suwa G, Nagura T, Yokoyama Y, Yamada M, Yamada Y, Jinzaki M

    Gait & posture 123   110021 2026.01

    ISSN  0966-6362

     View Summary

    Background: The human subtalar joint is crucial for bipedal posture and locomotion, providing stability, adaptability, and force dissipation. While its kinematics have been studied, most research has been under non-weight-bearing conditions, leaving its function under physiological loading unclear. Research question: What is the three-dimensional kinematics of the human subtalar joint during weight-bearing postures, as quantified by the helical axis? Methods: This study analyzed three-dimensional in vivo subtalar joint kinematics during weight-bearing using upright CT. Fifteen healthy elderly adults (11 females, 4 males; mean age: 64.9 ± 5.0 years) underwent CT scans in neutral, inverted, and everted postures using 10° coronal wedges. Kinematics were quantified via helical axis representation relative to two talar coordinate systems: the foot longitudinal axis and the talus principal axis. Results: The helical axis ran obliquely from anterior-medial-dorsal to posterior-lateral-plantar, with inclination and deviation angles of 22.4° ± 9.6° and 35.2° ± 5.6° in the former system, and 36.5° ± 10.7° and 12.0° ± 7.1° in the latter. Rotation along the axis was 9.9° ± 3.8°, with minimal translation (0.5 ± 0.5 mm). Significance: These findings suggest subtalar joint movement is more constrained under weight-bearing conditions than in non-weight-bearing studies. This study underscores the importance of weight-bearing analyses for clinical applications and understanding human foot adaptations for bipedalism.

  • Integrated assessment of total airway count and pneumonia volume on chest computed tomography as a prognostic biomarker for coronavirus disease.

    Nakagawara K, Tanabe N, Chubachi S, Maetani T, Shiraishi Y, Asakura T, Namkoong H, Tanaka H, Shimada T, Azekawa S, Otake S, Fukushima T, Watase M, Terai H, Sasaki M, Ueda S, Kato Y, Harada N, Suzuki S, Yoshida S, Tateno H, Yamada Y, Jinzaki M, Hirai T, Okada Y, Koike R, Ishii M, Kimura A, Imoto S, Miyano S, Ogawa S, Kanai T, Fukunaga K

    European radiology  2025.12

    ISSN  0938-7994

  • Elevated (18)F-FDG uptake in non-metastatic lymph nodes of POLE-mutated endometrial cancer on PET/CT.

    Kurihara M, Iwabuchi Y, Yamada Y, Shimizu A, Yoshimura T, Sakai K, Chiyoda T, Nakamura K, Nishihara H, Yamagami W, Jinzaki M

    European journal of radiology 195   112620 2025.12

    ISSN  0720-048X

  • Consolidation-to-ground-glass opacity ratio on chest CT as a prognostic marker for critical outcomes in COVID-19: a retrospective cohort study.

    Tanaka H, Tanabe N, Chubachi S, Maetani T, Shiraishi Y, Namkoong H, Asakura T, Shimada T, Azekawa S, Otake S, Nakagawara K, Fukushima T, Watase M, Terai H, Sasaki M, Ueda S, Kato Y, Harada N, Suzuki S, Yoshida S, Tateno H, Yamada Y, Jinzaki M, Hirai T, Okada Y, Koike R, Ishii M, Hasegawa N, Kimura A, Imoto S, Miyano S, Ogawa S, Kanai T, Fukunaga K

    BMC pulmonary medicine 25 ( 1 ) 550 2025.12

     View Summary

    Background: Computed tomography (CT)-based quantification of coronavirus disease 2019 (COVID-19) pneumonia is widely performed, and total pneumonia volume, ground-glass opacity (GGO), and consolidation affect disease severity. However, there is insufficient information on how consolidation to GGO (C/G) ratio correlates with clinical characteristics including disease severity and complications in COVID-19 patients. Methods: This retrospective cohort study included 1,194 hospitalized patients with COVID-19 from four member hospitals of the Japan COVID-19 Task Force. Critical outcomes were defined as conditions requiring high-flow oxygen or invasive mechanical ventilation, or death. Patients were divided into two groups based on %pneumonia (percentage of pneumonia volume divided by total lung volume) using receiver operating characteristic curve, and those with high %pneumonia were further divided into two groups based on C/G ratio. Critical outcomes and complications were then compared between high and low C/G ratio groups. Results: The optimal cutoff value of %pneumonia to predict critical outcomes was 17.1%, classifying the included patients into low (Group 1, n = 900) and high (n = 294) %pneumonia groups. The optimal cutoff value of C/G ratio was 0.202, classifying patients in the high %pneumonia group into two groups: low (Group 2, n = 192) and high C/G (Group 3, n = 102) ratio groups. The incidence of critical outcomes was stair-step high in all three groups (2.1%, 21.4%, and 37.3%, respectively). Multivariable analysis revealed an independent relationship between C/G ratio and critical outcomes from other known risk factors (adjusted odds ratio: 1.92, 95% confidential interval: 1.03–3.59, P = 0.040). Group 3 also showed significantly higher serum C-reactive protein (Group 1: 2.96 mg/dL, Group 2: 8.90 mg/dL, Group 3: 11.4 mg/dL) and procalcitonin (Group 1: 0.16 ng/mL, Group 2: 0.25 ng/mL, Group 3: 1.19 ng/mL) levels and incidence of bacterial infection (Group 1: 5.6%, Group 2: 10.4%, Group 3: 20.3%), compared with other groups. Conclusions: CT-density analysis of COVID-19 pneumonia in a large patient population showed that C/G ratio was a significant predictor of critical outcomes and useful for prognosis evaluation.

  • Intraabdominal fat-free volume, but not fat volume, predicts the development of peritonitis in patients on peritoneal dialysis: a retrospective cohort study

    Mitsuno R., Morimoto K., Kaneko K., Kojima D., Nakamura T., Nakayama T., Hama E.Y., Tonomura S., Yamada Y., Jinzaki M., Uchiyama K., Washida N., Kanda T., Azegami T., Yoshida T., Yoshino J., Hayashi K.

    Renal Replacement Therapy 11 ( 1 )  2025.12

     View Summary

    Introduction: Increased intraabdominal fat volume (IAFV) is associated with systemic inflammation and various cardiometabolic diseases. However, the clinical implication of IAFV in patients on peritoneal dialysis (PD) is unclear. In addition, the association of intraabdominal fat-free volume (IAFFV), which could mainly reflect the volume of visceral organs that serve as a potential source of inflammatory uremic toxins, with PD-associated clinical outcomes remains unknown. Methods: We retrospectively measured IAFV and IAFFV in the 108 patients on PD using abdominal computed tomography at initiation of PD. The participants were followed up until PD cessation, death, or study completion. We investigated the relationships between IAFV and IAFFV and the risks of peritonitis and PD discontinuation (defined by a composite endpoint of death or transfer to hemodialysis). Results: The median follow-up period was 46 (interquartile range 24–82) months. The baseline obesity-related traits significantly (P < 0.05) differed between high-IAFV (≥ 2935 cm<sup>3</sup>) and low-IAFV (< 2935 cm<sup>3</sup>) groups. However, the log-rank tests found no differences in the incidence of peritonitis and PD discontinuation between groups. In contrast, both peritonitis-free survival and time on PD therapy were shorter in high-IAFFV (≥ 4796 cm<sup>3</sup>) group than in low-IAFFV (< 4796 cm<sup>3</sup>) group (all P < 0.05). In the Cox regression models, IAFFV remained a strong risk factor for peritonitis even after adjusting for confounders (hazard ratio: 2.16, 95% confidence interval: 1.07–4.38). Conclusions: We demonstrate that IAFFV is an independent risk factor of peritonitis in patients o nPD. Additional studies are needed to identify specific intraabdominal component(s) involved in the pathogenesis of PD-associated adverse events.

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Reviews, Commentaries, etc. 【 Display / hide

  • A case of Ehlers-Danlos syndrome in which lung CT findings contributed to the diagnosis

    松本 晋作, 杉浦 弘明, 南 康大, 山田 祥岳, 渡辺 理沙, 福永 興壱, 陣崎 雅弘

    臨床放射線 (金原出版(株))  65 ( 1 ) 67 - 70 2020.01

    Other, Joint Work,  ISSN  0009-9252

  • 【胸部の最新画像情報2020】肺野の画像所見が診断の契機となったEhlers-Danlos症候群の1例

    松本 晋作, 杉浦 弘明, 南 康大, 山田 祥岳, 渡辺 理沙, 福永 興壱, 陣崎 雅弘

    臨床放射線 (金原出版(株))  65 ( 1 ) 67 - 70 2020.01

    Other, Joint Work,  ISSN  0009-9252

     View Summary

    症例は40歳代女性で、胸痛を主訴に近医を受診し、胸部単純X線で左気胸を指摘され当院へ紹介入院となった。胸部単純CTにて左気胸を認めた。両肺底部に複数の不整な嚢胞、両下葉に浸潤影、小葉中心性陰影および気管支拡張を認めた。なお、約1年前の肺炎時のCTでは嚢胞は認められなかった。胸腔ドレーンを留置するも気胸およびリークの改善を認めなかったため、胸腔鏡下左肺下葉嚢胞切除術を施行した。術後経過は良好で、術後約1週間で退院した。比較的若年者に繰り返す肺炎後に不整な嚢胞が散見され、難治性の気胸を発症したことから肺組織の脆弱性が示唆され、基礎疾患としてEhlers-Danlos症候群の可能性が疑われた。遺伝子検査ではCOL5A2遺伝子変異が陽性(ミスセンス変異)であり、古典型Ehlers-Danlos症候群と診断された。また、COL3A1遺伝子変異は陰性であったことから、血管型Ehlers-Danlos症候群は否定された。

  • DAT SPECTにおけるCSFマスク補正のSBR値の診断能への影響

    岩渕 雄, 中原 理紀, 亀山 征史, 松坂 陽至, 南 康大, 伊東 大介, 田渕 肇, 山田 祥岳, 陣崎 雅弘

    核医学 ((一社)日本核医学会)  56 ( Suppl. ) S175 - S175 2019.10

    Other, Joint Work,  ISSN  0022-7854

  • 肺野異常陰影 3 肺間質影の鑑別

    杉浦弘明, 南康大, 山田祥岳, 陣崎雅弘

    画像診断 39 ( 11 ) A210‐215 2019.09

    Other, Joint Work,  ISSN  0285-0524

  • 肺野異常陰影 2 肺野空洞性病変の鑑別

    南康大, 山田祥岳, 杉浦弘明, 陣崎雅弘

    画像診断 39 ( 11 ) A204‐A209 2019.09

    Other, Joint Work,  ISSN  0285-0524

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Presentations 【 Display / hide

  • 異なる年齢層における脊椎回転の特徴とその影響 立位CTを用いた分析

    水越 諒, 八木 満, 山田 祥岳, 横山 陽一, 山田 稔, 渡辺 航太, 中村 雅也, 名倉 武雄, 陣崎 雅弘

    日本整形外科学会雑誌, 

    2025.09

    (公社)日本整形外科学会

  • 新手法である立位CTにおける、冠動脈カルシウムスコア(Agatson Score)の妥当性

    山川 裕之, 山田 祥岳, 家田 真樹, 陣崎 雅弘, 高石 官均

    日本人間ドック・予防医療学会誌, 

    2025.08

    (公社)日本人間ドック・予防医療学会

  • 骨盤臓器脱における術前後における立位CTの有用性 新たな画像診断技術の可能性

    木須 伊織, 横山 陽一, 山田 稔, 山田 祥岳, 岩田 卓, 山上 亘, 陣崎 雅弘

    日本女性骨盤底医学会プログラム・抄録集, 

    2025.07

    日本女性骨盤底医学会

  • 腎周囲脂肪蓄積とミネラルコルチコイド受容体拮抗薬による治療反応性の関連

    満野 竜ノ介, 中村 俊文, 中村 健吾, 金子 賢司, 児島 大輝, 水谷 洋佑, 山田 祥岳, 畔上 達彦, 神田 武志, 木内 謙一郎, 吉野 純, 林 香

    日本腎臓学会誌, 

    2025.06

    (一社)日本腎臓学会

  • 立位・臥位CTにより肺容積の体位性変化を評価できた横隔膜ヘルニアの1例

    杉野 功祐, 鈴木 嵩弘, 山田 祥岳, 横山 陽一, 山田 稔, 大久保 祐, 政井 恭兵, 加勢田 馨, 菱田 智之, 朝倉 啓介, 陣崎 雅弘

    日本呼吸器外科学会雑誌, 

    2025.04

    (一社)日本呼吸器外科学会

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Research Projects of Competitive Funds, etc. 【 Display / hide

  • Analysis of the Human Body Under Gravity Using Upright CT and Its Application to Future Medicine

    2025.04
    -
    2029.03

    Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), No Setting

     View Summary

    これまでの医療の主な診断対象は生命寿命を規定する器質的疾患であったが、今後、機能性疾患を対象とした健康寿命の延伸の為の医療が重要になる。立位CTの導入により、姿勢・骨盤底の緩み・筋肉量など身体的フレイルの評価、立位で増悪する腰痛の診断・膝関節異常の早期発見・嚥下機能や排尿機能の評価など機能性障害の病態解明や早期診断が可能になる。また、放射線治療を座位の状態で行えればコストや設置面積を大幅に縮小できる。今回は、立位・座位で評価可能な人体の構造・機能を解明し、それに基づき、①身体的フレイルの評価、②機能性障害の病態解明と早期診断、③座位放射線治療の実現、の新たな診断・治療への有効性を明らかにする。

  • 超高齢社会における健康寿命延伸を目指した新たなCT診断学の構築

    2025.02
    -
    2026.03

    Japan Radiological Society, Research grant from Japan Radiological Society supported by Bayer, Principal investigator

  • Elucidation of age-related changes and pathology and establishment of a method for early detection of diseases using upright CT: Aiming at extending healthy life expectancy

    2023.04
    -
    2026.03

    Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), No Setting

     View Summary

    現在の通常のCTは臥位で撮影するため、ヒトの日常生活の状態(立位/座位) を反映しておらず、立位/座位での様々な病態を3次元的に画像化できていなかった。そこで我々は産学共同で320列立位CTを開発し、当施設に世界第1号機を導入した。これまでの初期検討により、立位と臥位で解剖学的構造や各種病態はかなり異なる事が分かった。この初期結果をふまえ、本研究では、新たな診断機器である立位CTを用いて、立位荷重下でより顕著となる加齢性変化や各種病態を画像的に解明しつつ、立位/座位での新たな疾患早期検出法の確立を目指す。そして立位CTによる早期診断により、超高齢社会における健康寿命の更なる延伸、生活の質の向上を目指す。

  • Construction of CT Diagnostics in the Near Future: Aiming at Extending Healthy Life Span in the Super-aging Society

    2022.09
    -
    Present

    Takeda Science Foundation, 医学系研究助成 臨床, Principal investigator

  • Elucidation of human body function using upright CT ~Looking at the era of healthy longevity~

    2021.04
    -
    2024.03

    Keio University, Grants-in-Aid for Scientific Research, Jinzaki Masahiro, Grant-in-Aid for Scientific Research (B), No Setting

     View Summary

    In the era of health and longevity, we aimed to promote the early detection and elucidation of functional disorders. To achieve this, we conducted research on the mechanisms of three functions: swallowing, urination, and walking. For swallowing function, we had a specialized chair designed, and developed a protocol for scanning and established a method for this examination. For urination function, we established a scanning protocol, and clarified the mechanism of normal urination. Imaging of patient groups revealed three patterns of urination disorders (benign prostatic hyperplasia, bladder neck sclerosis, neurogenic bladder). Thus, evaluating urination function appears useful in devising treatment strategies. Concerning walking function, the relation with posture was deemed significant, and software for objectively evaluating posture was developed. Additionally, software capable of measuring muscle volume with a 5% margin of error was developed, deemed useful in predicting frailty.

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Intellectual Property Rights, etc. 【 Display / hide

  • X線コンピュータ断層撮影装置

    Date applied: 特願2021-183419  2021.11 

    Date announced: 特開2023-070936  2023.05 

    Patent, Joint

  • 被検体の透明化方法および透明化された被検体の製造方法

    Date applied: 特願2020-082566  2020.05 

    Date announced: 特開2021-177146  2021.11 

    Date issued: 特許第7411223号 

    Date registered: 2023.12

    Patent, Joint

  • 外反母趾の予防方法

    Date applied: 特願2019-091025  2019.05 

    Date announced: 特開2020-185121  2020.11 

    Patent

Awards 【 Display / hide

  • Magna Cum Laude award at the 102nd Scientific Assembly and Annual Meeting of the Radiological Society of North America

    2016.11, Radiological Society of North America, Dynamic Chest Radiography Using Flat Panel Detector System: Technique and Applications

    Type of Award: Award from international society, conference, symposium, etc.,  Country: United States

  • Platinum Medal (the Best Presentation Award) at the 79rd Annual Meeting of the Japan Radiological Society

    Yoshitake Yamada, Minoru Yamada, Yoichi Yokoyama, Akiko Tanabe, Shiho Matsuoka, Yuki Niijima, Mitsuru Murata, Koichi Fukunaga, Shotaro Chubachi, Masahiro Jinzaki, 2020.06, Japan Radiological Society, Comparison of Inspiratory and Expiratory Lung/Lobe Volumes Among Supine, Standing and Sitting Positions scanned with Conventional and 320-Detector-Row Upright CT

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • Certificate of Merit Award at the 103rd Scientific Assembly and Annual Meeting of the Radiological Society of North America

    2017.11, Radiological Society of North America, Four-dimensional (4D) Computed Tomography (CT) with Non-rigid Registration Between Adjacent Phases Before and After Transcatheter Aortic Valve Implantation (TAVI): One Step Forward Into the Future

    Type of Award: Award from international society, conference, symposium, etc.,  Country: United States

  • Achievement Award, Japanese Society of Medical Imaging Technology

    Masahiro Jinzaki, Yoshitake Yamada, Minoru Yamada, Yoichi Yokoyama, Takeo Nagura, Naomichi Ogihara, Yasutaka Shindo, Makoto Nakano, 2022.07, Japanese Society of Medical Imaging Technology, Development of Whole-Body Upright Computed Tomography

    Type of Award: Award from Japanese society, conference, symposium, etc.

  • Silver Medal, the 80th Annual Meeting of the Japan Radiological Society

    Yoshitake Yamada, Shotaro Chubachi, Minoru Yamada, Yoichi Yokoyama, Akiko Tanabe, Shiho Matsuoka, Yuki Niijima, Mitsuru Murata, Koichi Fukunaga, Masahiro Jinzaki, 2021.04, Japan Radiological Society, Correlation between lung volumes on upright CT and measurements on pulmonary function test in COPD patients: comparison with supine CT

    Type of Award: Award from Japanese society, conference, symposium, etc.

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Other 【 Display / hide

  • JCS 2018 Guideline on Diagnosis of Chronic Coronary Heart Diseases: Cooperator

    2019年03月

     View Details

    JCS 2018 Guideline on Diagnosis of Chronic Coronary Heart Diseases: Cooperator

  • 2016年01月

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    The Uehara Memorial Foundation, Overseas research fellowships

 

Courses Taught 【 Display / hide

  • LECTURE SERIES, RADIOLOGY

    2025

  • CLINICAL CLERKSHIP IN RADIOLOGY

    2025

  • LECTURE SERIES, RADIOLOGY

    2024

  • CLINICAL CLERKSHIP IN RADIOLOGY

    2024

  • INTRODUCTION TO CLINICAL CLERKSHIPS

    2023

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Courses Previously Taught 【 Display / hide

  • 肝・胆・膵の画像診断

    慶應義塾大学医学部

    2018.04
    -
    2019.03

  • 骨盤腔の画像診断

    慶應義塾大学医学部

    2018.04
    -
    2019.03

  • 肝・胆・膵の画像診断

    Keio University

    2017.04
    -
    2018.03

    Full academic year

  • 肝・胆・膵の画像診断

    Keio University

    2015.04
    -
    2016.03

    Full academic year, Laboratory work/practical work/exercise

  • 女性骨盤臓器の画像診断

    Keio University

    2015.04
    -
    2016.03

    Full academic year, Laboratory work/practical work/exercise

Educational Activities and Special Notes 【 Display / hide

  • The person in charge of Objective Structured Clinical Examination

    2019.04
    -
    Present

    , Special Affairs

 

Memberships in Academic Societies 【 Display / hide

  • Japan Radiological Society, 

    2006
    -
    Present
  • The Japan Society of Ultrasonics in Medicine, 

    2014
    -
    Present
  • The Japanese Society of Nuclear Medicine, 

    2013
    -
    Present
  • Radiological Society of North America, 

    2010
    -
    Present
  • The Japanese Circulation Society, 

    2014
    -
    Present

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