• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Practice of individualized breast cancer screening in Japan by applying artificial intelligence technology

Research Project

Project/Area Number 18K07736
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionKindai University

Principal Investigator

Asai Yoshiyuki  近畿大学, 大学病院, 技術職員 (30639307)

Co-Investigator(Kenkyū-buntansha) 山室 美佳  近畿大学, 大学病院, 技術職員 (90837866)
村上 卓道  神戸大学, 医学研究科, 教授 (20252653)
Project Period (FY) 2018-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsマンモグラフィ / 乳腺密度 / 計測技術 / 推定技術 / 人工知能技術 / U-Net / Deep learning / 個別化検診 / 人工知能 / ディープラーニング / 乳腺密度計測 / 非圧迫領域 / 乳腺密度推定 / ROC / 病変見落とし / 乳房等価ファントム / ロス関数 / ダイス係数 / 乳腺密度予測 / 重回帰式 / 観察者応答特性 / 乳癌検診 / 個別化 / 平均乳腺線量
Outline of Final Research Achievements

Breast density (the ratio of the mass of mammary gland tissue to the total breast mass) is an important factor related to the risk of missing lesions on mammography, the risk of breast cancer, and the prediction of breast cancer incidence.
In this project, we have developed that 1) a quantitative measurement technique for breast density using digital mammography and 2) a technique for estimating breast density without using any images, and achieved highly accurate results by applying artificial intelligence technology to both techniques. The results of 1) are useful for radiologists to explain the certainty of the diagnosis to examinees in individualized breast cancer screening, which is expected to be introduced in Japan, and the results of 2) will contribute to the prediction of the risk of breast cancer in the future.

Academic Significance and Societal Importance of the Research Achievements

近年,ディジタルマンモグラフィの画素値を用いた乳腺密度の定量化が普及しているが,基準値とするマンモグラム中の脂肪組織の画素値を正確に特定することが困難なため,使用するソフトウェア間で計測結果が顕著に異なるのが実状であった.本課題ではそのような従来の問題点を解決し,受検者に信頼される個別化乳癌検診技術を確立した.
乳癌発症リスク予測には乳腺密度の時系列解析が必要であるが,被検者の過去の乳腺密度が不明であるため多くの研究が頓挫している.本課題で開発した画像を用いない乳腺密度推定技術は過去に遡った乳腺密度時系列解析による乳癌発症リスク予測を可能にし,乳癌の早期発見や死亡率減少につながる成果である.

Report

(7 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (18 results) (of which Int'l Joint Research: 11 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] The effect of breast density on the missed lesion rate in screening digital mammography determined using an adjustable-density breast phantom tailored to Japanese women2021

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Naomi Hashimoto, Nao Yasuda, Yoshiaki Ozaki, Kazunari Ishii, Yongbum Lee
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 1 Pages: e0245060-e0245060

    • DOI

      10.1371/journal.pone.0245060

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Computerised volumetric breast density measurements based on anatomical knowledge on digital mammograms2019

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Nao Yasuda, Koji Yamada, Yoshiaki Ozaki, Masao Matsumoto, Takamichi Murakami
    • Journal Title

      INternational Journal of Computer Assisted Radiology and Surgery

      Volume: 14, suppl. 1 Pages: 126-127

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Segmentation of glandular area in clinical mammograms using2019

    • Author(s)
      M. Yamamuro, Y. Asai, N. Yasuda, K. Yamada, K. Sakaguchi, T. Konishi, Y. Ozaki, M. Matsumoto, T. Murakami
    • Journal Title

      INternational Journal of Computer Assisted Radiology and Surgery

      Volume: 14, suppl. 1 Pages: 115-116

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Prediction of glandularity and breast radiation dose from mammography results in Japanese women2019

    • Author(s)
      Yamamuro M, Asai Y, Yamada K, Ozaki Y, Matsumoto M, Murakami T
    • Journal Title

      Medical and Biological Engineering and computing

      Volume: 57 Issue: 1 Pages: 289-298

    • DOI

      10.1007/s11517-018-1882-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Surmise of breast density using mammographic X-ray exposure conditions2023

    • Author(s)
      Yoshiyuki Asai, Mika Yamamuro, Takahiro Yamada, Yuichi Kimura, Kazunari Ishii, Yohan Kondo
    • Organizer
      17th INTERNATIONAL CONGRESS FOR RADIATION RESEARCH
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of the uncompressed region on digital mammograms for volumetric breast density measurement2023

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Takahiro Yamada, Yuichi Kimura, Kazunari Ishii, Yohan Kondo
    • Organizer
      17th INTERNATIONAL CONGRESS FOR RADIATION RESEARCH
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 3次元乳腺密度を指標としたU-netの乳腺領域自動抽出精度の評価2022

    • Author(s)
      山室美佳,浅井義行,橋本直美,安田奈生,木村浩都,任誠雲,石井一成,山田誉大,根本充貴,木村裕一,吉田久,半田久志, 近藤世範
    • Organizer
      第32回日本乳癌検診学会学術総会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Robustness of a U-net model for different image processing types in segmentation of the mammary gland region2022

    • Author(s)
      Mika YAMAMURO, Yoshiyuki ASAI, Naomi HASHIMOTO, Nao YASUDA, Hiroto KIMURA, Takahiro YAMADA, Mitsutaka NEMOTO, Yuichi KIMURA, Hisashi HANDA, Hisashi YOSHIDA, Koji ABE, Masahiro TADA, Hitoshi HABE, Takashi NAGAOK, Seiun NIN, Kazunari ISHII, Yongbum LEE
    • Organizer
      16th International Workshop on Breast Imaging
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Can radiological technologists create training data for automatically segmenting the mammary gland region in non-dense breasts?2021

    • Author(s)
      Mika YAMAMURO, Yoshiyuki ASAI, Naomi HASHIMOTO, Nao YASUDA, Takahiro YAMADA, Mitsutaka NEMOTO, Yuichi KIMURA, Hisashi HANDA, Hisashi YOSHIDA, Koji ABE, Masahiro TADA, Hitoshi HABE, Takashi NAGAOKA, Yoshiaki OZAKI, Seiun NIN, Kazunari ISHII, Yongbum LEE
    • Organizer
      35th Computer Assisted Radiology and Surgery
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 画像処理条件の違いがディープラーニングによる乳腺領域自動抽出及び乳腺密度算出精度に及ぼす影響2021

    • Author(s)
      山室美佳,浅井義行,橋本直美,安田奈生,木村浩都,任 誠雲,石井一成, 山田誉大,根本充貴,木村裕一,半田久志,吉田 久, 阿部孝司,多田昌裕,波部 斉,永岡 隆,李 鎔範
    • Organizer
      医用画像情報学会第191回学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 3次元乳腺密度計測の高精度化に向けたマンモグラム上での脂肪領域画素値の決定法2021

    • Author(s)
      山室美佳,浅井義行,橋本直美,安田奈生,木村浩都,任誠雲,石井一成,李鎔範
    • Organizer
      第31回日本乳癌検診学会学術総会
    • Related Report
      2021 Research-status Report
  • [Presentation] How to select training data to segment mammary gland region using a deep-learning approach for reliable individualized screening mammography2021

    • Author(s)
      Yamamuro, Mika, Asai, Yoshiyuki, Hashimoto, Naomi, Yasuda, Nao, Yamada, Takahiro, et al.
    • Organizer
      SPIE Medical Imaging, 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deep learning-based segmentation of mammary gland region in digital mammograms of scattered mammary glands and fatty breasts2020

    • Author(s)
      Mika YAMAMURO, Yoshiyuki ASAI, Naomi HASHIMOTO, Nao, YASUDA, Kenta SAKAGUCHI, Tatsuo KONISHI, Koji YAMADA, Yoshiaki OZAKI, Kazunari ISHII, Yongbum LEE
    • Organizer
      Computer Assisted Radiology and Surgery
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effectiveness of high-luminance display monitors in digital mammography2020

    • Author(s)
      Mika YAMAMURO, Yoshiyuki ASAI, Naomi HASHIMOTO, Nao, YASUDA, Koji YAMADA, Yoshiaki OZAKI, Kazunari ISHII, Yongbum LEE
    • Organizer
      Computer Assisted Radiology and Surgery
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Computerised volumetric breast density measurements based on anatomical knowledge on digital mammograms2019

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Nao Yasuda, Koji Yamada, Yoshiaki Ozaki, Masao Matsumoto, Takamichi Murakami
    • Organizer
      33rd International Congress on Computer Assisted Radiology and Surgery
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Segmentation of glandular area in clinical mammograms using deep learning aimed at volumetric breast density measurement2019

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Nao Yasuda, Koji Yamada, Yoshiaki Ozaki, Masao Matsumoto, Takamichi Murakami
    • Organizer
      33rd International Congress on Computer Assisted Radiology and Surgery
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Deep Learningを用いた乳腺密度計測のための乳腺領域の抽出2019

    • Author(s)
      山室美佳,浅井義行,橋本直美,安田奈生,坂口健太,小西達郎
    • Organizer
      第29回日本乳癌検診学会学術総会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 身体特性および成育歴情報を用いた乳腺密度の予測2019

    • Author(s)
      安田奈生,浅井義行,山室美佳,橋本直美,山田浩司,尾崎吉明
    • Organizer
      第29回日本乳癌検診学会学術総会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Prediction of fibroglandular density and breast dose based on physical characteristics and lifestyle habits2018

    • Author(s)
      Mika Yamamuro, Yoshiyuki Asai, Koji Yamada, Yoshiaki Ozaki, Masao Matsumoto, Takamichi Murakami
    • Organizer
      World Congress on Medical Physics and Biomedical Engineering 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of fibroglandular-variable breast phantom and its application to quantitative assessment of undetectable lesion rate in digital mammography2018

    • Author(s)
      Yoshiyuki Asai, Mika Yamamuro, Koji Yamada, Yoshiaki Ozaki, Masao Matsumoto, Takamichi Murakami
    • Organizer
      World Congress on Medical Physics and Biomedical Engineering 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] マンモグラフィ用モニタの高輝度化の有用性2018

    • Author(s)
      浅井義行、山室美佳、山田浩司、尾崎吉明、松本政雄、村上卓道
    • Organizer
      第28回日本乳癌検診学会学術総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 3次元乳腺密度解析のための脂肪領域画素値の決定法2018

    • Author(s)
      山室美佳、浅井義行、山田浩司、尾崎吉明、松本政雄、村上卓道
    • Organizer
      第28回日本乳癌検診学会学術総会
    • Related Report
      2018 Research-status Report
  • [Patent(Industrial Property Rights)] MAMMOGRAPHY APPARATUS2023

    • Inventor(s)
      浅井 義行,山室 美佳,岩井 春樹,倉富 奈央子,他
    • Industrial Property Rights Holder
      近畿大学,キヤノンメディカルシステムズ
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Related Report
      2023 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 乳腺密度計測方法2022

    • Inventor(s)
      浅井 義行、山室 美佳
    • Industrial Property Rights Holder
      学校法人近畿大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Research-status Report
  • [Patent(Industrial Property Rights)] 乳房撮影装置2022

    • Inventor(s)
      浅井 義行、山室 美佳,岩井 春樹、倉富 奈央子,他
    • Industrial Property Rights Holder
      学校法人近畿大学、キャノンメディカルシステムズ株式会社
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi