Ohashi, Toshio

写真a

Affiliation

School of Medicine, Department of Radiology (Radiation Oncology) (Shinanomachi)

Position

Associate Professor

External Links

Profile Summary 【 Display / hide

  • 日本医学放射線学会専門医、がん治療認定医、日本医学放射線学会研修指導者

Career 【 Display / hide

  • 1998.05
    -
    2000.04

    慶應義塾大学医学部研修医(放射線科)

  • 2000.05
    -
    2001.12

    東京都済生会中央病院レジデント

  • 2002.01
    -
    2004.01

    慶應義塾大学助手(医学部放射線治療・核医学)

  • 2004.02
    -
    2006.11

    独立行政法人国立病院機構東京医療センター放射線科

  • 2006.12
    -
    2010.04

    慶應義塾大学助教(医学部放射線治療・核医学)

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Academic Background 【 Display / hide

  • 1998.03

    Keio University, Faculty of Medicine

    University, Graduated

Academic Degrees 【 Display / hide

  • 博士(医学), Keio University, Dissertation, 2009.02

Licenses and Qualifications 【 Display / hide

  • 日本医学放射線学会専門医, 2005.08

  • がん治療認定医, 2008.04

  • 日本医学放射線学会研修指導者, 2012.12

 

Research Areas 【 Display / hide

  • Life Science / Radiological sciences (Radiation Science)

 

Books 【 Display / hide

  • 最先端医療機器の病院への普及展望と今後の製品開発

    大橋俊夫,大出健一,深田恭平,花田剛士, 技術情報協会, 2018.05

    Scope: 105-112

  • 密封小線源治療 診療・物理QAマニュアル

    大橋 俊夫, 金原出版, 2013.10

    Scope: 115-123

  • 放射線治療グリーンマニュアル

    OHASHI TOSHIO, ANDO YUTAKA, 金原出版, 2005.03

    Scope: 123-163

  • 放射線治療グリーンマニュアル

    OHASHI TOSHIO, DOKIYA TAKUSHI, 金原出版, 2005.03

    Scope: 51-55

  • 放射線治療 専門医にきく最新の臨床

    茂松 直之、大橋 俊夫, 中外医学社, 2004.07

    Scope: 98-100

Papers 【 Display / hide

  • Salvage focal brachytherapy in castration-resistant prostate cancer with neuroendocrine differentiation after radiation therapy

    Komori T, Kosaka T, Watanabe K, Tanaka T, Yasumizu Y, Hongo H, Mikami S, Ohashi T, Oya M.

    IJU Case Rep  5 ( 3 ) 1 - 4 2022.04

    Research paper (scientific journal), Joint Work, Accepted

  • 関東に放射線腫瘍医を増やそう:新専門医制度における当院の放射線治療教育について

    大橋 俊夫

    臨床放射線 (医学書院)  67 ( 4 ) 419 - 420 2022.04

    Research paper (scientific journal), Single Work, Lead author, Last author, Corresponding author

  • Radiation dose rate variations in different measurement scenarios after prostate <sup>125</sup>I brachytherapy

    Hanada T., Yorozu A., Kikumura R., Ohashi T., Shigematsu N.

    Brachytherapy (Brachytherapy)  20 ( 6 ) 1305 - 1311 2021.11

    Research paper (scientific journal), Joint Work, Accepted,  ISSN  15384721

     View Summary

    Purpose: This study aimed to directly compare different measurement scenarios using a supplemental radiation exposure measurement data set. Materials and methods: Two sets of measurement scenarios comparing different body postures, such as standing and chair sitting positions, and different measurement directions, such as anterior and posterior directions, were assessed for radiation dose rate variations in this study at the Tokyo Medical Center, Japan. The estimated precaution time for holding children in the spoon position while sitting was also calculated. Results: Different radiation dose rate measurement scenarios showed different variation tendencies. Radiation dose rate measurement showed higher mean values of measured radiation dose tendency in the standing position than in the sitting positions. The measurement from the anterior direction showed a slightly lower tendency than that from the posterior direction. Assuming a dose limit of 1 mSv, the precaution time calculated for children being held in the spoon position for a certain duration every day was 51.5 (range, 12.5–152.2) minutes. Conclusions: Our study presented a supplemental radiation exposure measurement data set and directly compared different measurement scenarios. Several trends in radiation exposure variations were found in the measurement scenarios at different body postures and different measurement directions. Our study data set could be a useful source of concrete information regarding radiation safety and contribute to the review and revision of public guidance in the future.

  • オリゴ転移前立腺癌に対する放射線治療

    大橋 俊夫

    臨床泌尿器科 (医学書院)  75 ( 5 ) 314 - 318 2021.04

    Research paper (scientific journal), Single Work, Lead author, Last author, Corresponding author

  • Comparison of prostate verification with implanted gold markers in tissue surrounding the prostate and pelvic bony anatomy for external beam radiation therapy following low-dose-rate brachytherapy: a prospective clinical trial

    Kaneda T, Ohashi T, Hanada T, Takenaka K, Nishimura S, Sakayori M, Sutani S, Momma T, Shigematsu N

    Journal of Radiation Research (Oxford University Press)  61 ( 5 ) 784 - 790 2020.09

    Research paper (scientific journal), Joint Work, Corresponding author, Accepted,  ISSN  04493060

     View Summary

    © The Author(s) 2020. We aimed to investigate whether gold marker implantation in the tissue surrounding the prostate could accurately monitor setup errors during external beamradiation therapy (EBRT) following low-dose-rate (LDR) brachytherapy. Thirty-eight patients had confirmed intermediate- or high-risk prostate cancer and received EBRT following LDR brachytherapy. In>175 computed tomography imaging sessions, the average values of the weekly setup error during EBRT to the prostate centroid at the time of gold marker matching in the surrounding tissue of the prostate and pelvic bonematching were measured and then compared using theWilcoxon signed-rank test.Goldmarkermatching in the surrounding tissue of the prostate estimated setup errors better than those estimated by bone matching (3D displacement=2.7±2.0 vs 3.8±2.6 mm, P<0.01).Overall, the standard deviation of systematic (Σ) and random (σ) setup error was lower with goldmarkermatching than with bonematching (3D displacement=1.8 and 1.1mm vs 2.1 and 1.6 mm, respectively). With gold marker matching, the setup error of the position of the prostate centroid was smaller, and the optimal setup margin was lower than that with bone matching (2Σ + 0.7σ and 2.5_ + 0.7σ of 3D displacement = 4.3 and 5.2 mm vs 5.3 and 6.4 mm, respectively). This high-precision radiotherapy approach placing gold markers in the surrounding tissue of the prostate can allow more accurate setup during EBRT following LDR brachytherapy.

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Papers, etc., Registered in KOARA 【 Display / hide

Presentations 【 Display / hide

  • これだけは知っておきたい!中・高年者の前立腺がん 放射線療法

    大橋俊夫

    第109回 日本泌尿器科学会総会 (東京国際フォーラム) , 

    2021.12

    Public lecture, seminar, tutorial, course, or other speech

  • 埼玉病院における前立腺癌シード療法の長期成績

    箱﨑恭平,大橋俊夫,門間哲雄,酒寄正範,竹中浩二,外山弘文,金子雄太,大門達明,金井邦光,大家基嗣

    第109回日本泌尿器科学会総会 (横浜) , 

    2021.12

    Oral presentation (general)

  • Mechanical Isocenterの経時変位がVMAT線量Deliveryへ与える影響

    高橋真一,阿部直也,谷謙甫,脇田明尚,中川悟,酒寄正範,大橋俊夫,金井一能,谷崎洋

    第34回日本放射線腫瘍学会学術大会 (オンライン) , 

    2021.11

    Oral presentation (general)

  • 前立腺癌に対するシード療法の長期成績

    外山弘文,大橋俊夫,酒寄正範,竹中浩二,箱崎恭平,大門達明,金井邦光,茂松直之

    第34回日本放射線腫瘍学会学術大会 (オンライン) , 

    2021.11

    Oral presentation (general)

  • コロナ禍における限局性前立腺癌の放射線治療

    大橋俊夫

    前立腺癌WEBセミナー (オンライン) , 

    2021.07

    Public lecture, seminar, tutorial, course, or other speech, 株式会社メディコン

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

  • 前立腺癌の放射線治療における尿路有害事象予測モデルの構築

    2019.04
    -
    2022.03

    Grant-in-Aid for Scientific Research, Research grant, Principal investigator

  • シード線源を用いた化学小線源療法の開発

    2011.04
    -
    2013.03

    Grant-in-Aid for Scientific Research, Research grant, No Setting

  • 前立腺癌小線源治療における尿道線量リアルタイムモニタリングと有害事象の予測

    2009.04
    -
    2011.03

    Grant-in-Aid for Scientific Research, Research grant, No Setting

  • 融合画像作成による高精度前立腺癌小線源治療法の確立

    2007.03
    -
    2009.03

    Grant-in-Aid for Scientific Research, Research grant, No Setting

  • 頭頚部腫瘍放射線治療時の口腔内急性および慢性障害を防止するための装具の開発

    2005.03
    -
    2007.03

    Grant-in-Aid for Scientific Research, Research grant, No Setting

Awards 【 Display / hide

  • Good Poster Award (The 7th Japan-Taiwan Radiation Oncology Symposium)

    Takenaka K, Ohashi T, Nishimura S, Sakayori M, Kaneda T, Momma T, Shigematsu N, 2019.05, The 7th Japan-Taiwan Radiation Oncology Symposium

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

  • Outstanding Contribution in Reviewing

    OHASHI TOSHIO, 2017.02, Brachytherapy

    Type of Award: Honored in official journal of a scientific society, scientific journal

  • 日本医学放射線学会電子ポスター(CyPos)賞(Bronze Medal)

    白石悠,深田淳一,茂松直之,北川雄光,大橋俊夫,沓木章二,久保敦司, 2008.04, 食道癌に対する化学放射線 / 放射線治療後の胸水、心嚢液貯留

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

  • 日本放射線腫瘍学会ポスター発表学会賞(金賞)

    金田和也,宮澤雷太,深田淳一,茂松直之,大橋俊夫,菅原章友,国枝悦夫,奥洋平,中島淳,久保敦司, 2007.12, 前立腺シード小線源治療におけるTRUS-CT融合画像を用いた恥骨弓干渉の予測

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

  • 第6回日本癌治療学会研究奨励賞

    OHASHI TOSHIO, 2006.10, Acute urinary morbidity following I-125 prostate branchytherapy

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

 

Courses Taught 【 Display / hide

  • LECTURE SERIES, RADIOLOGY

    2022

  • LECTURE SERIES, RADIOLOGY

    2021

  • LECTURE SERIES, RADIOLOGY

    2020

  • LECTURE SERIES, RADIOLOGY

    2019

Courses Previously Taught 【 Display / hide

  • 臨床実習担当「放射線治療計画実習」

    Keio University

    2015.04
    -
    2016.03

    Full academic year, Laboratory work/practical work/exercise, Within own faculty

  • 放射線科系統講義「小線源治療」

    Keio University

    2015.04
    -
    2016.03

    Full academic year, Lecture, Within own faculty

  • 臨床実習担当「放射線治療計画実習」

    Keio University

    2014.04
    -
    2015.03

    Full academic year, Laboratory work/practical work/exercise, Within own faculty

  • 放射線科系統講義「小線源治療」

    Keio University

    2014.04
    -
    2015.03

    Full academic year, Lecture, Within own faculty

  • 臨床実習担当「放射線治療計画実習」

    Keio University

    2013.04
    -
    2014.03

    Full academic year, Laboratory work/practical work/exercise, Within own faculty

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Educational Activities and Special Notes 【 Display / hide

  • 第20回共用試験医学系OSCE認定評価者講習会

    2011.10
    -
    Present

    , Special Affairs

  • 第15回慶應義塾大学病院臨床研修指導医養成ワークショップ

    2010.07
    -
    Present

    , Special Affairs

 

Memberships in Academic Societies 【 Display / hide

  • 第10回前立腺癌密封小線源永久挿入治療研究会, 

    2014.01
  • 第15回 ヨウ素125シード線源永久挿入による前立腺癌密封小線源療法技術講習会, 

    2013.06
    -
    Present
  • 日本放射線腫瘍学会小線源治療部会第14回研究会, 

    2012.05
  • 泌尿器腫瘍放射線研究会(GUTR), 

    2012.01
    -
    Present
  • 日本放射線腫瘍学会小線源治療部会ガイドライン改訂作業委員会, 

    2011.07
    -
    Present

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Committee Experiences 【 Display / hide

  • 2018.10

    座長, 第31回日本放射線腫瘍学会学術大会

  • 2018.06

    座長, 日本放射線腫瘍学会小線源治療部会第20回研究会

  • 2018.04

    座長, 第77回日本医学放射線学会総会・学術集会

  • 2016.04
    -
    Present

    代議員, 日本医学放射線学会

  • 2016.01

    座長, 第11回J-POPS中間報告会

     View Remarks

    J-POPS中間報告

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