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2020 Fiscal Year Research-status Report

Innovation of colonoscopy practice with use of artificial intelligence

Research Project

Project/Area Number 19K08403
Research InstitutionShowa University

Principal Investigator

森 悠一  昭和大学, 医学部, 講師 (20459209)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords人工知能
Outline of Annual Research Achievements

大腸の腫瘍性ポリープは前がん病変であるため、摘除が推奨されている。しかし、内視鏡での腫瘍/非腫瘍の鑑別精度は80%台に留まっており、不必要なポリープ切除が横行している。申請者は人工知能(AI)を利用することで、この問題を解決できると考え、複数の科研費研究を経て、95%超の感度・特異度で腫瘍を鑑別しうる自動診断システムを開発した(Mori, et al.Annals of Internal Medicine 2018)。
本研究では、国際共同研究という、より厳しい環境下でも、今までに得られた成果が再現されるかどうかを確かめることを一義とする。具体的には、オスロ大学(ノルウェー)・キングスカレッジ(イギリス)・昭和大学(日本)での3か国による国際共同研究を立案、実施した。デザインは、前向きの優越性検証試験である。主要評価項目を微小腺腫診断における感度とし、大腸内視鏡中に人工知能を用いた場合と用いない場合での診断能の差を評価した。倫理委員会承認を取得、臨床試験登録をした後(UMIN000035213)、2019年度始から患者リクルートを開始した。2021年4月現在で1200人の患者集積をもって、患者リクルートが98%終了している状況である。なお、研究に伴う有害事象等は発生していない。

Current Status of Research Progress
Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

予定加入患者数の98%を2年度目終了時に達成しており、想定よりも早い研究進捗である。

Strategy for Future Research Activity

R3年度は、患者リクルートを第一四半期で終了し、得られたビッグデータの欠損値の調査および全体データの解析を第二第三四半期で実施し、第四四半期までに論文投稿を終える。

Causes of Carryover

国際共同研究における旅費を大幅に節約することで、次年度使用額が生じた。本来、ノルウェー・イギリス・日本を頻回に訪問し研究クオリティを上げる予定であったが、コロナ感染症により不可能になった。しかしながら、頻回なzoom 会議を行うことで、十分な試験クオリティを担保できた。

  • Research Products

    (18 results)

All 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (16 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 16 results)

  • [Int'l Joint Research] University of Oslo(ノルウェー)

    • Country Name
      NORWAY
    • Counterpart Institution
      University of Oslo
  • [Int'l Joint Research] King's College(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      King's College
  • [Journal Article] AI everywhere in endoscopy, not only for detection and characterization2021

    • Author(s)
      Hassan Cesare、Mori Yuichi、Antonelli Giulio
    • Journal Title

      Endoscopy International Open

      Volume: 09 Pages: E627~E628

    • DOI

      10.1055/a-1373-4799

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Charting a path forward for clinical research in artificial intelligence and gastroenterology2021

    • Author(s)
      Glissen Brown Jeremy R.、Waljee Akbar K.、Mori Yuichi、Sharma Prateek、Berzin Tyler M.
    • Journal Title

      Digestive Endoscopy

      Volume: - Pages: -

    • DOI

      10.1111/den.13974

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Artificial intelligence in colonoscopy ‐ Now on the market. What's next?2021

    • Author(s)
      Mori Yuichi、Neumann Helmut、Misawa Masashi、Kudo Shin‐ei、Bretthauer Michael
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: 36 Pages: 7~11

    • DOI

      10.1111/jgh.15339

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Artificial Intelligence System to Determine Risk of T1 Colorectal Cancer Metastasis to Lymph Node2021

    • Author(s)
      Kudo Shin-ei、Ichimasa Katsuro、Villard Benjamin、Mori Yuichi、Misawa Masashi、et al.
    • Journal Title

      Gastroenterology

      Volume: 160 Pages: 1075~1084.e2

    • DOI

      10.1053/j.gastro.2020.09.027

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of a computer-aided detection system for colonoscopy and a publicly accessible large colonoscopy video database (with video)2021

    • Author(s)
      Misawa Masashi、Kudo Shin-ei、Mori Yuichi、Hotta Kinichi、Ohtsuka Kazuo、Matsuda Takahisa、Saito Shoichi、Kudo Toyoki、Baba Toshiyuki、Ishida Fumio、Itoh Hayato、Oda Masahiro、Mori Kensaku
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 93 Pages: 960~967.e3

    • DOI

      10.1016/j.gie.2020.07.060

    • Peer Reviewed
  • [Journal Article] Establishing key research questions for the implementation of artificial intelligence in colonoscopy: a modified Delphi method2020

    • Author(s)
      Ahmad Omer F.、Mori Yuichi、Misawa Masashi、Kudo Shin-ei、et al.
    • Journal Title

      Endoscopy

      Volume: - Pages: -

    • DOI

      10.1055/a-1306-7590

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Current status and future perspective on artificial intelligence for lower endoscopy2020

    • Author(s)
      Misawa Masashi、Kudo Shin‐ei、Mori Yuichi、Maeda Yasuharu、Ogawa Yushi、Ichimasa Katsuro、Kudo Toyoki、Wakamura Kunihiko、Hayashi Takemasa、Miyachi Hideyuki、Baba Toshiyuki、Ishida Fumio、Itoh Hayato、Oda Masahiro、Mori Kensaku
    • Journal Title

      Digestive Endoscopy

      Volume: 33 Pages: 273~284

    • DOI

      10.1111/den.13847

    • Peer Reviewed
  • [Journal Article] Can artificial intelligence help to detect dysplasia in patients with ulcerative colitis?2020

    • Author(s)
      Maeda Yasuharu、Kudo Shin-ei、Ogata Noriyuki、Misawa Masashi、Mori Yuichi、Mori Kensaku、Ohtsuka Kazuo
    • Journal Title

      Endoscopy

      Volume: - Pages: -

    • DOI

      10.1055/a-1261-2944

    • Peer Reviewed
  • [Journal Article] Robust endocytoscopic image classification based on higher-order symmetric tensor analysis and multi-scale topological statistics2020

    • Author(s)
      Itoh Hayato、Nimura Yukitaka、Mori Yuichi、Misawa Masashi、Kudo Shin-Ei、Hotta Kinichi、Ohtsuka Kazuo、Saito Shoichi、Saito Yutaka、Ikematsu Hiroaki、Hayashi Yuichiro、Oda Masahiro、Mori Kensaku
    • Journal Title

      International Journal of Computer Assisted Radiology and Surgery

      Volume: 15 Pages: 2049~2059

    • DOI

      10.1007/s11548-020-02255-3

    • Peer Reviewed
  • [Journal Article] Artificial intelligence for polyp detection during colonoscopy: a systematic review and meta-analysis2020

    • Author(s)
      Barua Ishita、Vinsard Daniela Guerrero、Jodal Henriette C.、Loberg Magnus、Kalager Mette、Holme Oyvind、Misawa Masashi、Bretthauer Michael、Mori Yuichi
    • Journal Title

      Endoscopy

      Volume: 53 Pages: 277~284

    • DOI

      10.1055/a-1201-7165

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Machine learning in GI endoscopy: practical guidance in how to interpret a novel field2020

    • Author(s)
      van der Sommen Fons、de Groof Jeroen、Struyvenberg Maarten、van der Putten Joost、Boers Tim、Fockens Kiki、Schoon Erik J、Curvers Wouter、de With Peter、Mori Yuichi、Byrne Michael、Bergman Jacques J G H M
    • Journal Title

      Gut

      Volume: 69 Pages: 2035~2045

    • DOI

      10.1136/gutjnl-2019-320466

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] How Far Will Clinical Application of AI Applications Advance for Colorectal Cancer Diagnosis?2020

    • Author(s)
      Mori Yuichi、Kudo Shin-ei、Misawa Masashi、Takeda Kenichi、Kudo Toyoki、Itoh Hayato、Oda Masahiro、Mori Kensaku
    • Journal Title

      Journal of the Anus, Rectum and Colon

      Volume: 4 Pages: 47~50

    • DOI

      10.23922/jarc.2019-045

    • Peer Reviewed
  • [Journal Article] Proceedings from the First Global Artificial Intelligence in Gastroenterology and Endoscopy Summit2020

    • Author(s)
      Parasa Sravanthi、Wallace Michael、Bagci Ulas、Antonino Mark、Berzin Tyler、Byrne Michael、Celik Haydar、Farahani Keyvan、Golding Martin、Gross Seth、Jamali Vafa、Mendonca Paulo、Mori Yuichi、et al.
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 92 Pages: 938~945.e1

    • DOI

      10.1016/j.gie.2020.04.044

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cost savings in colonoscopy with artificial intelligence-aided polyp diagnosis: an add-on analysis of a clinical trial (with?video)2020

    • Author(s)
      Mori Yuichi、Kudo Shin-ei、East James E.、Rastogi Amit、Bretthauer Michael、Misawa Masashi、Sekiguchi Masau、Matsuda Takahisa、Saito Yutaka、Ikematsu Hiroaki、Hotta Kinichi、Ohtsuka Kazuo、Kudo Toyoki、Mori Kensaku
    • Journal Title

      Gastrointestinal Endoscopy

      Volume: 92 Pages: 905~911.e1

    • DOI

      10.1016/j.gie.2020.03.3759

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Can artificial intelligence standardise colonoscopy quality?2020

    • Author(s)
      Mori Yuichi、Kudo Shin-ei、Misawa Masashi
    • Journal Title

      The Lancet Gastroenterology & Hepatology

      Volume: 5 Pages: 331~332

    • DOI

      10.1016/S2468-1253(19)30407-8

    • Peer Reviewed
  • [Journal Article] Artificial Intelligence-assisted System Improves Endoscopic Identification of Colorectal Neoplasms2020

    • Author(s)
      Kudo Shin-ei、Misawa Masashi、Mori Yuichi、et al.
    • Journal Title

      Clinical Gastroenterology and Hepatology

      Volume: 18 Pages: 1874~1881.e2

    • DOI

      10.1016/j.cgh.2019.09.009

    • Peer Reviewed

URL: 

Published: 2021-12-27  

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