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DETECTION OF SESSILE SERRATED ADENOMA/POLYPS USING CONVOLUTIONAL NEURAL NETWORK

Research Project

Project/Area Number 18K08010
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionFukushima Medical University

Principal Investigator

TOGASHI KAZUTOMO  福島県立医科大学, 公私立大学の部局等, 教授 (10316531)

Co-Investigator(Kenkyū-buntansha) 歌野 健一  福島県立医科大学, 公私立大学の部局等, 准教授 (10728158)
朱 欣  会津大学, コンピュータ理工学部, 上級准教授 (70448645)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords大腸腫瘍 / 大腸内視鏡検査 / コンピュータ自動診断 / 早期大腸癌 / 大腸鋸歯状病変 / sessile serrated lesions / CAD / artificial intelligence / computer-aided diagnosis / colorectal neoplasm / sessile serrated lesion / colonoscopy / ポリープ検出率 / 偽陽性率 / 自動解析アルゴリズム / 大腸ポリープ / SSL / AI / Artifial Intelligence / colon polyp / sessile serrated adenoma / AI診断
Outline of Final Research Achievements

During colonoscopic procedures, endoscopists feel heavy mental burden to prevent from missing colorectal polyps. Therefore, computer-aid diagnosis (CADx) system is expected to relieve their burden. In this series of the research projects, we started developing a CADx system to detect small polyps, and we are now working on a validation trial in a clinical setting. Meanwhile we have developed another CADx system to propose a treatment strategy for early-stage colorectal cancers. After provisionally developing a CADx based on small number of endoscopic images, we have finally developed the CADx superior or equivalent to expert colonoscopists in diagnostic performance, by collecting over five thousand of the images from 10 hospitals across Japan. In addition, we have also developed a CADx to differentiate adenomatous from serrated lesions but failed to create a CADx to identify sessile serrated lesions. It is a next issue to be addressed.

Academic Significance and Societal Importance of the Research Achievements

大腸癌は、腺腫や鋸歯状病変などの大腸ポリープから発生し、この内視鏡的切除により大腸癌の発生は抑制されることは実証されている。しかし、大腸内視鏡検査による大腸ポリープ見落とし率は25%にまで達するとされ、大腸内視鏡医の精神的・肉体的負担は大きい。この研究では、世界的に普及している白色光非拡大内視鏡画像において、効果的に機能するコンピュータ自動診断装置の開発に成功し、実用化に向けての第一歩を踏み出した。開発したシステムを利用することにより、第一には内視鏡医の負担軽減が実現できるが、大腸内視鏡診療における医療の均てん化につながることも期待され、若手医師の教育での活用も想定される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (24 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Polyp detection algorithm can detect small polyps: Ex vivo reading test compared with endoscopists2020

    • Author(s)
      Guo Z, Nemoto D, Zhu X, et al
    • Journal Title

      Dig Endosc

      Volume: - Issue: 1 Pages: 162-169

    • DOI

      10.1111/den.13670

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Diagnostic performance of artificial intelligence to identify deeply invasive colorectal cancer on non-magnified plain endoscopic images.2020

    • Author(s)
      Nakajima Y, Zhu X, Nemoto D, Li Q, Guo Z, Katsuki S, Hayashi Y, Utano K, Aizawa M, Takezawa T, Sagara Y, Shibukawa G, Yamamoto H, Lefor AK, Togashi K
    • Journal Title

      Endosc Int Open

      Volume: 8 Issue: 10 Pages: E1341-E1348

    • DOI

      10.1055/a-1220-6596

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reduce false-positive rate by active learning for automatic polyp detection in colonoscopy videos2020

    • Author(s)
      Guo Z, Zhang R, Li Q, Nemoto D, Togashi K, Zhu X
    • Journal Title

      Proc. IEEE Int. Symp. Biomed. Imaging

      Volume: 2020 Pages: 1655-1658

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Applications of artificial intelligence to endoscopy practice: The view from Japan Digestive Disease Week 20182019

    • Author(s)
      Togashi K
    • Journal Title

      Dig Endosc

      Volume: 31 Issue: 3 Pages: 270-272

    • DOI

      10.1111/den.13354

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Computer-aided diagnosis for colorectal serrated lesions using non-magnified white light endoscopic images2021

    • Author(s)
      Yuki Nakajima, Zhe Guo, Daiki Nemoto et al
    • Organizer
      Digestive Disease Week 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Computer-aided diagnosis for endoscopically untreatable colorectal cancer on non-magnified white light endoscopic images, compared with endoscopists2021

    • Author(s)
      Takahito Takezawa, Zhe Guo, Daiki Nemoto, et al
    • Organizer
      Digestive Disease Week 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 非拡大白色光内視鏡画像を用いた大腸腺腫及び鋸歯状病変のコンピュータ支援診断システムの開発2021

    • Author(s)
      根本大樹、中島勇貴、愛澤正人、五十畑則之、遠藤俊吾、山階武、林芳和、冨樫一智
    • Organizer
      第107回日本消化器病学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] .Which region does artificial intelligence look at to predict T1b colorectal cancer?: Analysis based on class activation mapping2020

    • Author(s)
      Y Nakajima, D Nemoto, X Zhu, Z Guo, et al
    • Organizer
      Digestive Disease Week 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improvement of polyp detection using artificial intelligence with blue laser imaging and linked color imaging2020

    • Author(s)
      S Sugino, N Yoshida, X Zhu et al
    • Organizer
      Digestive Disease Week 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大腸内視鏡検査領域におけるAI研究2020

    • Author(s)
      冨樫一智
    • Organizer
      第38回日本大腸検査学会総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Identification of deeply invasive colorectal cancer on non-magnified endoscopic images using artificial intelligence2019

    • Author(s)
      Xin Zhu, Daiki Nemoto, Takaya Mizuno, Yuki Nakajima, Kenichi Utano, Masato Aizawa, Takahito Takezawa, Yuichi Sagara et al
    • Organizer
      DDW2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A machine-learning algorithmcan detect diminutive colorectal polyps: a reading test comparing recognition with human endoscopists2019

    • Author(s)
      Xin Zhu, Daiki Nemoto, Yu Wang, Qin Li, Masato Aizawa, Kenichi Utano, Noriyuki Isohata, Shungo Endo et al
    • Organizer
      DDW 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 人工知能(AI)によるSessile Serrated Adenoma/Polypの診断2019

    • Author(s)
      根本大樹、愛澤正人、冨樫一智
    • Organizer
      第105回日本消化器病学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 人工知能による大腸T1b癌の通常非拡大内視鏡診断の試み2019

    • Author(s)
      中島勇貴、根本大樹、歌野健一、林芳和、竹澤敬人、相良裕一、愛澤正人、澁川悟朗、山本博徳、冨樫一智
    • Organizer
      第97回日本消化器内視鏡学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 白色光非拡大内視鏡画像による大腸pT1b癌のAI診断 研修医・専攻医・熟練医との比較検討2019

    • Author(s)
      三宅真里世、根本大樹、佐藤 雄翔、勝木 伸一、林芳和、相良裕一、愛澤正人、山本博徳、冨樫一智
    • Organizer
      第74回日本大腸肛門病学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] ex vivo読影試験における大腸ポリープの発見能:内視鏡医はAIに勝てるか?2019

    • Author(s)
      佐藤雄翔、根本大樹、三宅真理世、愛澤正人、歌野健一、五十畑則之、遠藤俊吾、冨樫一智
    • Organizer
      第74回日本大腸肛門病学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 白色光非拡大内視鏡画像による大腸pT1b癌のAI診断2019

    • Author(s)
      冨樫一智、根本大樹、林芳和
    • Organizer
      第27回日本消化器関連学会週間(JDDW2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] AIによる大腸ポリープの検出 内視鏡医が認識できない病変の特徴とは?2019

    • Author(s)
      根本大樹、愛澤正人、歌野健一、根本鉄太郎、五十畑則之、遠藤俊吾、冨樫一智
    • Organizer
      第27回日本消化器関連学会週間(JDDW2019)
    • Related Report
      2019 Research-status Report
  • [Presentation] 臨床研究はおもしろい!!観察研究から最新のAI研究まで2019

    • Author(s)
      冨樫一智
    • Organizer
      第20回自治医科大学消化器内科学教室同門会特別講演
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A MACHINE-LEARNING ALGORITHM CAN DETECT DIMINUTIVE COLORECTAL POLYPS: READING TEST IN COMPARISON WITH HUMAN2019

    • Author(s)
      Xin Zhu, Daiki Nemoto, Zhe Guo, Yu Wang, Qin Li, Masato Aizawa, Kenichi Utano, Noriyuki Isohata, Shungo Endo, David G Hewett, Kazutomo Togashi
    • Organizer
      Digestive Disease Week 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Identification of Deeply Invasive Colorectal Cancer on Non-Magnified Endoscopic Images Using Artificial Intelligence2019

    • Author(s)
      Xin Zhu, Daiki Nemoto, Takaya Mizuno, Yuki Nakajima, Kenichi Utano, Masato Aizawa, Takahito Takezawa, Yuichi Sagara, Goro Shibukawa, Hironori Yamamoto, David G Hewett, Kazutomo Togashi
    • Organizer
      Digestive Disease Week 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 人工知能(AI)Sessile Serrated Adenoma/Polypの診断2019

    • Author(s)
      根本大樹、愛澤正人、冨樫一智
    • Organizer
      第95回日本消化器病学会総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 人工知能(AI)を用いた内視鏡診療ー近未来を展望するー2019

    • Author(s)
      朱欣
    • Organizer
      第25回会津消化器病研究会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] 大腸内視鏡画像及びビデオからリアルタイムに大腸ポリープ検出する装置2019

    • Inventor(s)
      朱 欣、冨樫 一智、根本 大樹
    • Industrial Property Rights Holder
      朱 欣、冨樫 一智、根本 大樹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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