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Evaluation of collateral pathways to the artery of Adamkiewicz using ultra-high-resolution CT

Research Project

Project/Area Number 18K07766
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 InstitutionIwate Medical University

Principal Investigator

YOSHIOKA Kunihiro  岩手医科大学, 医学部, 教授 (70210648)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
KeywordsAdamkiewicz動脈 / CT / 大動脈瘤 / 放射線 / エックス線CT / 脊髄
Outline of Final Research Achievements

A total of 89 patients with descending thoracic and thoracoabdominal aortic aneurysms were scanned using the ultra-high-resolution CT scanner (Precision, Canon Medical Systems, Otawara, Japan) with a 0.25-mm detector row width, supporting image reconstruction with a 1024 × 1024 matrix. The cardiovascular radiologists evaluated visualization of the artery of Adamkiewicz and its continuity between the anterior spinal artery and the aorta with CPR (curved planar reformation) images using a workstation (Ziostation, Ziosoft, Tokyo, Japan).
The artery of Adamkiewicz was depicted in 89 of 95 (94%) patients. The ultra-high-resolution CT demonstrated 26 collateral pathways in these 89 (22%) patients (Six patients had 2 collateral pathways). The collateral pathways were divided into 2 groups based on the location. One group included collateral pathways located around the spinal column (n = 26, 81%) and the other group included collateral pathways located in the thoracic wall (n = 5, 19%).

Academic Significance and Societal Importance of the Research Achievements

従来CTの8倍の空間分解能を有する超高精細CTでは、94%という極めて高い確率でAdamkiewicz動脈を描出できることが明らかになった。従来CTを用いた場合には、同じ方法での描出率は50ー60%程度であるので、今後Adamkiewicz動脈の診断には超高精細CTが第一選択となる可能性がある。また、超高精細CTは脊椎周囲や胸壁を走行する側副血行路も明瞭に描出可能で、今回の研究でその経路や頻度が明らかになった。これらの知見は、手術の前に側副血行路となっている動脈を同定することで、手術に際してそれらを再建したり温存する等の手術術式に影響を与えるばかりでなく、術後対麻痺の回避への貢献が期待できる。

Report

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

    (14 results)

All 2021 2020 2019 2018

All Journal Article (7 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (5 results) (of which Invited: 5 results) Book (2 results)

  • [Journal Article] Updates on Computed Tomography Imaging in Aortic Aneurysms and Dissection2020

    • Author(s)
      Tanaka Ryoichi、Yoshioka Kunihiro、Abiko Akihiko
    • Journal Title

      Annals of Vascular Diseases

      Volume: 13 Issue: 1 Pages: 23-27

    • DOI

      10.3400/avd.ra.19-00127

    • NAID

      130007815712

    • ISSN
      1881-641X, 1881-6428
    • Year and Date
      2020-03-25
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 2020年改訂版 大動脈瘤・大動脈解離診療ガイドライン2020

    • Author(s)
      荻野均ほか41名(研究代表者は42番目)
    • Journal Title

      日本循環器学会

      Volume: HP公開のみ Pages: 41-42

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 心大血管CTにおけるAIの活用2020

    • Author(s)
      折居誠、吉岡邦浩
    • Journal Title

      医学のあゆみ

      Volume: 275 Pages: 634-640

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Adamkiewiczの描出と進歩2019

    • Author(s)
      吉岡邦浩
    • Journal Title

      INNERVISION

      Volume: 34 Pages: 108-109

    • Related Report
      2019 Research-status Report
  • [Journal Article] Detectability of minute temporal bone structures with ultra-high resolution CT2019

    • Author(s)
      Harukazu Hiraumi, Makiko Obara, Kunihiro Yoshioka, Shigeru Ehara, Hiroaki Sato
    • Journal Title

      Auris Nasus Larynx

      Volume: 46 Issue: 6 Pages: 830-835

    • DOI

      10.1016/j.anl.2019.03.007

    • NAID

      130008047858

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] The era of ultra-high-resolution computed tomography2019

    • Author(s)
      吉岡 邦浩
    • Journal Title

      Journal of Iwate Medical Assiociation

      Volume: 70 Issue: 6 Pages: 181-187

    • DOI

      10.24750/iwateishi.70.6_181

    • NAID

      130007628999

    • ISSN
      0021-3284, 2434-0855
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematic evaluation of collateral pathways to the artery of Adamkiewicz using computed tomography2018

    • Author(s)
      Yoshioka Kunihiro、Tanaka Ryoichi、Takagi Hidenobu、Ueyama Yuta、Sugawara Tsuyoshi、Chiba Takuya、Arakita Kazumasa、Schuijf Joanne D
    • Journal Title

      European Journal of Cardio-Thoracic Surgery

      Volume: 54 Issue: 1 Pages: 19-25

    • DOI

      10.1093/ejcts/ezx509

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 超高精細CTの心血管領域での実際2020

    • Author(s)
      吉岡邦浩
    • Organizer
      第30回日本心血管画像動態学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Adamkiewicz動脈の描出と進歩2019

    • Author(s)
      吉岡邦浩
    • Organizer
      第78回日本医学放射線学会総会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 超高精細CTの登場と動脈硬化性疾患での臨床応用2019

    • Author(s)
      吉岡邦浩
    • Organizer
      第50回日本動脈硬化学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 各領域の進歩:脈管2019

    • Author(s)
      吉岡邦浩
    • Organizer
      Advanced Medical Imaging研究会 2018
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] エックス線CTの最前線:超高精細CTの登場と臨床応用2019

    • Author(s)
      吉岡邦浩
    • Organizer
      第140回岩手医学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Book] 心臓・大血管 画像診断の勘ドコロNEO2021

    • Author(s)
      横山 健一
    • Total Pages
      292
    • Publisher
      メジカルビュー社
    • ISBN
      9784758316156
    • Related Report
      2020 Annual Research Report
  • [Book] ここから始める循環器疾患のCT・MRI2020

    • Author(s)
      似鳥俊明、似鳥俊明
    • Total Pages
      260
    • Publisher
      学研メディカル秀潤社
    • ISBN
      4780909937
    • Related Report
      2020 Annual Research Report

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

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