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Establishment of non-invasive and quantitative 3D imaging of cerebral blood flow and metabolism using optical coherence tomography

Research Project

Project/Area Number 15K21085
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Brain biometrics
Neurosurgery
Research InstitutionKyoto University

Principal Investigator

Suzuki Takashi  京都大学, 充実した健康長寿社会を築く総合医療開発リーダー育成リーディング大学院, 特定助教 (10572224)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords生体光計測 / 光コヒーレンス断層法 / 脳循環代謝 / 神経代謝カップリング / 光コヒーレント断層法 / 脳血管障害 / 光生体計測
Outline of Final Research Achievements

In order to know the relationship between cerebral blood flow and cerebral metabolism three dimensionally, we developed a 3D in vivo imaging of cerebral blood flow and metabolism using a frequency domain optical coherence tomography. Although the 3D vessel structure images could be acquired in rat and medaka brain, measurements of the 3D distribution of brain temperature using the OCT were difficult. Therefore, we also developed a simultaneous imaging system to measure the 2 dimensional distribution of cerebral blood flow and brain temperature using a laser speckle imaging and an infrared camera. By using this system, we measured the rat brain during control the cerebral blood flow and the metabolism by an anesthesia. As a result, the discrepancy between the decreasing of blood flow and the increasing of brain temperature was observed. This finding may be useful to understand the cerebral circulation and metabolism.

Academic Significance and Societal Importance of the Research Achievements

脳が活動すると、その場所でエネルギーが消費され、代謝によって熱が発生する。その熱は脳血流によって輸送され、その結果脳の局所において温度が変化する。このわずかな温度変化を知ることで、脳の活動の程度を知ることができる。また病気で血流が悪い箇所などでは、周辺よりも温度が高いことが予想され、脳温度によって異常を見つけることが考えられる。脳血管は脳内で3次元的な構造を有しているため、血流や温度の関係を3次元的に評価することが重要となってくる。光イメージングは、非侵襲的にこれらを評価することができる。本研究は、光イメージングにより脳温度と脳血流の生理学的基礎を明らかにすることを目的としている。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (8 results)

All 2018 2017 2016 2015

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Simultaneous infrared thermal imaging and laser speckle imaging of brain temperature and cerebral blood flow in rats2018

    • Author(s)
      Suzuki Takashi、Oishi Naoya、Fukuyama Hidenao
    • Journal Title

      Journal of Biomedical Optics

      Volume: 24 Issue: 03 Pages: 1-1

    • DOI

      10.1117/1.jbo.24.3.031014

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Visualization of microvessels in medaka brain using Optical Coherence Tomography2018

    • Author(s)
      Suzuki Takashi、Ueno Tomohiro、Oishi Naoya、Fukuyama Hidenao
    • Organizer
      International Conference on Complex Medical Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] OCTによるメダカ脳微小血管のin vivo計測2018

    • Author(s)
      鈴木 崇士、上野 智弘、大石 直也、 福山 秀直
    • Organizer
      Optics& Photonics Japan 2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 赤外温度カメラとレーザースペックル血流計を用いたラット脳血流・代謝同時イメージング法の開発2017

    • Author(s)
      鈴木 崇士、大石 直也、 福山 秀直
    • Organizer
      日本光学会年次学術講演会 Optics & Photonics Japan 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 脳血流・温度同時イメージングによる脳循環代謝の時空間解析2017

    • Author(s)
      鈴木 崇士、大石 直也、 福山 秀直
    • Organizer
      第29回日本脳循環代謝学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Simultaneous Imaging of Local Brain Temperature and Cerebral Blood Flow Change during Common Carotid Artery Occlusion in Rat2016

    • Author(s)
      T.Suzuki, N. Oishi, H. Fukuyama
    • Organizer
      International Conference on Complex Medical Engineering
    • Place of Presentation
      Tochigi, Japan
    • Year and Date
      2016-08-04
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simultaneous Imaging of Local Brain Temperature and Cerebral Blood Flow Change during Common Carotid Artery Occlusion in Rat2016

    • Author(s)
      Takashi Suzuki, Naoya Oishi, and Hidenao Fukuyama
    • Organizer
      The 10th International Conference on Complex Medical Engineering
    • Place of Presentation
      Tochigi, Japan
    • Year and Date
      2016-08-04
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 赤外温度・血流同時イメージングによるラット脳虚血急性期における脳循環代謝の評価2015

    • Author(s)
      鈴木 崇士、大石 直也、福山 秀直
    • Organizer
      第27回日本脳循環代謝学会総会
    • Place of Presentation
      富山国際会議場(富山県・富山市)
    • Year and Date
      2015-10-30
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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