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Development and clinical application of MRA and perfusion imaging using a new ASL approach

Research Project

Project/Area Number 20K08111
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 InstitutionKyushu University

Principal Investigator

Togao Osamu  九州大学, 医学研究院, 准教授 (10452749)

Co-Investigator(Kenkyū-buntansha) 菊地 一史  九州大学, 大学病院, 助教 (20529838)
樋渡 昭雄  九州大学, 医学研究院, 准教授 (30444855)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsMRI / Arterial spin labeling / 脳主幹動脈閉塞性疾患 / 脳動静脈奇形 / 硬膜動静脈瘻 / 4D MR angiography / MR angiography / Perfusion imaging / arterial spin labeling / MR Angiography / 脳血管障害 / 脳灌流画像
Outline of Research at the Start

本研究ではこれらの新しいASLアプローチを用いたMRAおよび灌流画像の開発とその臨床応用を目指す。まずAccASLによる脳灌流画像の定量性の検討を行う。SPECTを基準とし定量性を比較する。次に4D-PACKの臨床的有用性を検討する。脳動静脈短絡性疾患の患者において4D-PACKを撮像し、各コンポーネントの描出能についてContrast-to-noise Ratioの測定を行うことで検討する。最後に4D-S-PACKの撮像条件の最適化と後処理法の開発を行う。超選択的ラベルの位置やサイズの最適化、血管選択性の確認を行う。人工知能による自動ラベル位置決定アルゴリズムの開発も行う。

Outline of Final Research Achievements

In this study, we developed a head MRA using a new ASL approach and its clinical application. We developed MRA using Pseudo-continuous ASL (PCASL), a labeling technique that can obtain a high signal-to-noise ratio. Specifically, we developed and clinically applied PCASL-based 4D-MRA and superselective PCASL-based vascular 4D-MRA. The results of this study enabled us to obtain accurate information on the vascular structure and hemodynamics of the brain in a non-contrast-enhanced and short imaging time. 4D-MRA with superselective PCASL enabled us to obtain the same information as DSA.

Academic Significance and Societal Importance of the Research Achievements

本研究では新たなASLアプローチを用いた頭部MRAの開発とその臨床応用を行った。高い信号雑音比を得ることができるラベル技術であるPseudo-continuous ASL (PCASL)を用いたMRAにより通常のMRAで描出することが困難な、脳主幹動脈閉塞性疾患における側副血行路を描出することができるようになり、手術適応の判断に役立つ可能性がある。脳動静脈奇形や硬膜動静脈瘻の血管構築を描出することにより、その診断、治療方針の決定、治療後のモニタリングなどが非侵襲的に行うことができるようになった。これにより造影剤を使用する侵襲的検査である脳血管造影の代替となる検査法を確立することができた。

Report

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

    (22 results)

All 2024 2023 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results) Presentation (16 results) (of which Int'l Joint Research: 2 results,  Invited: 9 results)

  • [Journal Article] Improved temporal resolution and acceleration on 4D-MR angiography based on superselective pseudo-continuous arterial spin labeling combined with CENTRA-keyhole and view-sharing (4D-S-PACK) using an interpolation algorithm on the temporal axis and compressed sensing?sensitivity encoding (CS-SENSE)2024

    • Author(s)
      Murazaki Hiroo、Wada Tatsuhiro、Togao Osamu、Obara Makoto、Helle Michael、Kobayashi Kouji、Ishigami Kousei、Kato Toyoyuki
    • Journal Title

      Magnetic Resonance Imaging

      Volume: 109 Pages: 1-9

    • DOI

      10.1016/j.mri.2024.02.011

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Arterial Spin Labeling‐Based <scp>MR</scp> Angiography for Cerebrovascular Diseases: Principles and Clinical Applications2023

    • Author(s)
      Togao Osamu、Obara Makoto、Yamashita Koji、Kikuchi Kazufumi、Wada Tatsuhiro、Murazaki Hiroo、Arimura Koichi、Nishimura Ataru、Horie Nobutaka、van de Ven Kim、Van Cauteren Marc、Ishigami Kousei
    • Journal Title

      Journal of Magnetic Resonance Imaging

      Volume: 1 Issue: 4 Pages: 130-142

    • DOI

      10.1002/jmri.29119

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optimization of 4D-MR angiography based on superselective pseudo-continuous arterial spin labeling combined with CENTRA-keyhole and view-sharing (4D-S-PACK) for vessel-selective visualization of the internal carotid artery and vertebrobasilar artery systems2022

    • Author(s)
      Murazaki Hiroo、Wada Tatsuhiro、Togao Osamu、Obara Makoto、Helle Michael、Yamashita Yasuo、Kobayashi Kouji、Nishie Akihiro、Ishigami Kousei、Kato Toyoyuki
    • Journal Title

      Magnetic Resonance Imaging

      Volume: 85 Pages: 287-296

    • DOI

      10.1016/j.mri.2021.10.040

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Vessel-Selective 4D-MRA Using Superselective Pseudocontinuous Arterial Spin-Labeling with Keyhole and View-Sharing for Visualizing Intracranial Dural AVFs2022

    • Author(s)
      Togao O.、Obara M.、Kikuchi K.、Helle M.、Arimura K.、Nishimura A.、Wada T.、Murazaki H.、Van Cauteren M.、Hiwatashi A.、Ishigami K.
    • Journal Title

      American Journal of Neuroradiology

      Volume: 43 Issue: 3 Pages: 368-375

    • DOI

      10.3174/ajnr.a7426

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Improved selective visualization of internal and external carotid artery in 4D-MR angiography based on super-selective pseudo-continuous arterial spin labeling combined with CENTRA-keyhole and view-sharing (4D-S-PACK)2020

    • Author(s)
      Obara Makoto、Togao Osamu、Helle Michael、Murazaki Hiroo、Wada Tatsuhiro、Yoneyama Masami、Hamano Hiroshi、Nakamura Masanobu、Van Cauteren Marc
    • Journal Title

      Magnetic Resonance Imaging

      Volume: 73 Pages: 15-22

    • DOI

      10.1016/j.mri.2020.07.013

    • Related Report
      2020 Research-status Report
  • [Journal Article] Vessel-selective 4D-MR angiography using super-selective pseudo-continuous arterial spin labeling may be a useful tool for assessing brain AVM hemodynamics2020

    • Author(s)
      Togao Osamu、Obara Makoto、Helle Michael、Yamashita Koji、Kikuchi Kazufumi、Momosaka Daichi、Kikuchi Yoshitomo、Nishimura Ataru、Arimura Koichi、Wada Tatsuhiro、Murazaki Hiroo、Iihara Koji、Van Cauteren Marc、Hiwatashi Akio
    • Journal Title

      European Radiology

      Volume: 30 Issue: 12 Pages: 6452-6463

    • DOI

      10.1007/s00330-020-07057-4

    • Related Report
      2020 Research-status Report
  • [Presentation] Arterial spin labeling MRI: 基本から最新技術まで2024

    • Author(s)
      栂尾 理
    • Organizer
      第113回 Neuro-imaging conference筑後・佐賀
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 新たなArterial Spin Labeling MRI撮像法の開発:頭蓋内DAVFへの臨床応用を中心に2024

    • Author(s)
      栂尾 理
    • Organizer
      DSA道場 East
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Hybrid multi-delay PCASL of time-encoded and variable-TR schemes for the assessment of cerebral perfusion in Moyamoya disease2023

    • Author(s)
      Osamu Togao
    • Organizer
      ISMRM & ISMRT Annual Meeting & Exhibition 2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] Arterial Spin Labelingを用いたMR Angiographyの臨床応用2023

    • Author(s)
      栂尾 理
    • Organizer
      第72回九州MRI研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Time-encoded法とvariable-TR法のハイブリッドmulti-delay PCASLによるもやもや病の血流評価2023

    • Author(s)
      栂尾 理
    • Organizer
      第51回日本磁気共鳴医学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 頭部ASLの臨床応用 -血管選択, 4Dへの展開-2023

    • Author(s)
      栂尾 理
    • Organizer
      第51回日本磁気共鳴医学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Clinical Applications of MR Angiography Based on Arterial Spin Labeling to Cerebrovascular Disorders2023

    • Author(s)
      Osamu Togao
    • Organizer
      109th Scientific Assembly and annual Meeting of Radiological Society of North America
    • Related Report
      2023 Annual Research Report
  • [Presentation] Arterial spin labeling MRI 基本から最新技術まで2023

    • Author(s)
      栂尾 理
    • Organizer
      第32回鹿児島MRIアーベント
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 非造影4D-MRA によるDAVF 血管構築の描出2023

    • Author(s)
      栂尾 理
    • Organizer
      第39回日本脳神経血管内治療学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Superselective pCASLを用いた血管選択的4D-MRAによる頭蓋内硬膜動静脈瘻の描出能の検討2022

    • Author(s)
      栂尾 理
    • Organizer
      第81回日本医学放射線学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Arterial Spin Labeling MRIの開発と臨床応用2022

    • Author(s)
      栂尾 理
    • Organizer
      佐賀CT・MRI研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 新たなArterial Spin Labeling技術を用いたMRAおよび灌流画像の開発と臨床応用2022

    • Author(s)
      栂尾 理
    • Organizer
      第33回 臨床MR 脳機能研究会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Multi-phase Arterial Spin Labeling MRI for Dementia and Neurovascular disease2022

    • Author(s)
      Osamu Togao
    • Organizer
      JKTHS Neuroradiology workshop 2022
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 可変TRスキームに最適化背景抑制パルスを用いたダイナミックpCASLによるもやもや病の脳血流評価2021

    • Author(s)
      栂尾 理、樋渡 昭雄、小原 真、他
    • Organizer
      第49回日本磁気共鳴医学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 4D Arterial Spin Labeling MR Angiography for Visualization of Brain Arteriovenous Malformations: A Comparison of Methods2020

    • Author(s)
      Togao O, et al.
    • Organizer
      RSNA2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Vessel-selective 4D-MRA Using Superselective pCASL Combined with CENTRA-Keyhole (4D-S-PACK) for Intracranial Dural Arteriovenous Fistulas2020

    • Author(s)
      Togao O, et al.
    • Organizer
      ISMRM2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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