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Development of new diagnostic system for brain metastasis with deep learning

Research Project

Project/Area Number 21K07645
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 InstitutionNagoya City University

Principal Investigator

Hiwatashi Akio  名古屋市立大学, 医薬学総合研究院(医学), 教授 (30444855)

Co-Investigator(Kenkyū-buntansha) 栂尾 理  九州大学, 医学研究院, 准教授 (10452749)
菊地 一史  九州大学, 医学研究院, 助教 (20529838)
石神 康生  九州大学, 医学研究院, 教授 (10403916)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords脳転移 / MRI / 機械学習 / 転移性脳腫瘍 / 深層学習
Outline of Research at the Start

脳転移診断には一般に造影後3DT1WIが用いられるが、増強された血管と微小転移の区別が困難な場合がある。VISIBLE (Volume Isotropic Simultaneous Interleaved Bright- and bLack-blood Examination)法は血管信号抑制画像と非抑制画像を同時取得し、高感度、低偽陽性率で脳転移を診断可能であるが、従来法では撮像に5分程度必要である。そこで本研究はVISIBLE法を応用した新たな短時間の撮像法の開発、脳転移症例を深層学習させたAIシステムによる脳転移の自動検出法、および最適な治療法選択法の開発を行う

Outline of Final Research Achievements

VISIBLE (Volume Isotropic Simultaneous Interleaved Bright- and bLack-blood Examination) provides simultaneous acquisitions of images with blood vessel suppression (“Black images” hereafter) and without blood vessel suppression (“Bright images”) on postcontrast MR imaging. VISIBLE can reduce false-positives, such as those caused by insufficient suppression of blood vessels through the combined use of Bright images and Black images, however, the original version of this system about five minutes to obtain. In this research, we modified this sequence to obtain in three minutes. With this new sequence, we gathered patients data with and without metastases. Using deep learning, we created a new AI based diagnostic technique and examined its clinical utility.

Academic Significance and Societal Importance of the Research Achievements

脳転移は成人で最多の頭蓋内腫瘍であるが、正確な診断には時間を要し、見逃される病変が多い。VISIBLE (Volume Isotropic Simultaneous Interleaved Bright- and bLack-blood Examination)法は血管信号抑制画像と非抑制画像を同時取得し、高感度、低偽陽性率で脳転移を診断可能であるが、従来法では撮像に5分程度必要であった。そこで撮像時間の短縮を試みた。また、患者データベースを蓄積し、AIシステムを応用した脳転移の自動検出診断支援システムを作成し、放射線科医の診断にどの程度貢献できるかを評価した。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2024 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] Philips Healthcare AI Informatics(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] A deep convolutional neural network-based automatic detection of brain metastases with and without blood vessel suppression.2022

    • Author(s)
      Kikuchi Y, Togao O, Kikuchi K, Momosaka D, Obara M, Van Cauteren M, Fischer A, Ishigami K, Hiwatashi A.
    • Journal Title

      Eur Radiol

      Volume: 32 Pages: 29983005-29983005

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] AI-VISIBLE: Utility in the Diagnosis of Brain Metastases2024

    • Author(s)
      Kikuchi K, Osamu T, Yamashita K, Momosaka D, Kikuchi Y, Fukasawa K, Nishimura S, Toyoda H, Hiwatashi A, Ishigami K.
    • Organizer
      第83回日本医学放射線学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Interleaved Black-- and Bright--Blood Acquisition for Automatic Brain Metastasis Detection using Deep Learning Convolutional Neural Network2021

    • Author(s)
      Obara M, Yoshimoto K, Hiwatashi A, Fischer A, Akamine Y, Ogino T, Yoneyama M, Asad R, Ueda Y, Kwon J, van Cauteren M
    • Organizer
      29th Annual Meeting International Society for Magnetic Resonance in Medicine
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 転移性脳腫瘍診断における九州大学の取り組み2021

    • Author(s)
      樋渡昭雄
    • Organizer
      第 41 回神経放射線ワークショップ
    • Related Report
      2021 Research-status Report
    • Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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