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

Development of A Noninvasive Electrical Conductivity Measurement System for Lung Tumors

Research Project

Project/Area Number 17K10390
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionHokkaido University

Principal Investigator

Tha Khin Khin  北海道大学, 医学研究院, 准教授 (20451445)

Co-Investigator(Kenkyū-buntansha) 杉森 博行  北海道大学, 保健科学研究院, 准教授 (20711899)
菊地 英毅  北海道大学, 大学病院, 講師 (60463741)
真鍋 徳子  自治医科大学, 医学部, 教授 (70463742)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords導電率 / 肺 / 縦隔 / MRI / 非侵襲的 / 非侵襲的導電率画像 / 腫瘍 / 非侵襲 / 肺癌
Outline of Final Research Achievements

Electrical conductivity is a property of materials to conduct electric current. Different materials have different electrical conductivity values, ranging from almost zero (insulators) to several million siemens per meter (S/m) (conductors). Living tissues are also reported to have variable electrical conductivity values - fat and bone have lower values, whereas the cerebrospinal fluid (CSF) and blood have higher values. Tumors, especially malignant ones, are reported to have higher values than the normal tissues. This study aimed at the establishment of an MRI technique to noninvasively measure electrical conductivity of lung lesions and to evaluate the accuracy of this technique in distinguishing lung tumors.
We established an MRI technique for noninvasive electrical conductivity measurement for lung lesions. Tumor contrast, which is a texture characteristic of electrical conductivity distribution, can be useful in distinguishing between benign and malignant lung tumors.

Academic Significance and Societal Importance of the Research Achievements

本研究にて、肺MRIを用いた非侵襲的導電率イメージングが可能となった。この撮像は約10秒と短時間の息止め条件下で終了するため、ほとんどの患者が耐えられる。また、造影剤投与も必要ない。MRIであるため、放射線被ばくも伴わない。よって、患者にやさしい検査法である。
悪性腫瘍と良性腫瘍の比較検討では、コントラストと呼ばれる導電率分布のテキスチャー特徴は、悪性腫瘍で有意に高い結果が得られた。今後の肺腫瘍の良悪性の区別に有用な可能性がある。
今まで肺腫瘍の検査はCTによる形態評価やPETによる活動性評価が主体であったが、本研究成果にて今後肺MRIによる導電率イメージングを肺腫瘍の良悪性評価に用いられる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (15 results)

All 2020 2019 2018 Other

All Int'l Joint Research (4 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 6 results)

  • [Int'l Joint Research] Philips Research Laboratorirs(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Philips Research Laboratories(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Philips Research Laboratories(ドイツ)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Philips Research Laboratories(ドイツ)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Investigating the challenges and generalizability of deep learning brain conductivity mapping2020

    • Author(s)
      Hampe N, Katscher U, van den Berg CAT, Tha KK, Mandija S
    • Journal Title

      Phys Med Biol

      Volume: 65 Issue: 13 Pages: 135001-135001

    • DOI

      10.1088/1361-6560/ab9356

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Electrical Conductivity of Lung and Mediastinal Masses: Feasibility of Noninvasive Assessment by MRI2020

    • Author(s)
      Tha KK, Kikuchi E, Kikuchi Y, Yoshino Y, Ishizaka K, Katscher U
    • Organizer
      日本放射線腫瘍学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Noninvasive Assessment of Electrical Conductivity of Lung and Mediastinal Mass Lesions: Feasibility and Potential Clinical Value2020

    • Author(s)
      Tha KK, Katscher U, Kikuchi E, Kikuchi Y, Yoshino Y, Ishizaka K, Manabe N, Kudo K, Shirato H
    • Organizer
      2020 ISMRM & SMRT VIRTUAL CONFERENCE & EXHIBITION
    • Related Report
      2020 Annual Research Report
  • [Presentation] Electrical Conductivity of the Brain in Normal & Pathological States2019

    • Author(s)
      タ キンキン
    • Organizer
      第78回日本放射線医学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] A Clinician's View on DL-EPT2019

    • Author(s)
      タ キンキン
    • Organizer
      The 27th Annual Meeting of International Society for Magnetic Resonance in Medicine
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Potential Clinical Applications of Phase-based Electrical Conductivity Imaging2019

    • Author(s)
      タ キンキン
    • Organizer
      The 5th International Workshop on MRI Phase Contrast & Quantitative Susceptibility Mapping
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A Clinician's View on DL-EPT2019

    • Author(s)
      タ キンキン
    • Organizer
      第27回国際磁気共鳴医学会
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Electric Properties Tomography: A New Tool for Noninvasive Measurement of Tissue Electrical Conductivity2018

    • Author(s)
      Tha KK, Katscher U, Kudo K, Shirato H
    • Organizer
      Annual Meeting of Radiological Society of America
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] EPTとAPTイメージングは 組織状態を評価できるか?2018

    • Author(s)
      タ キンキン
    • Organizer
      Annual Meeting of Japanese Society of Magnetic Resonance in Medicine
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] The impact of CSF pulsation on reconstructed brain conductivity2018

    • Author(s)
      Katscher U, Stehning C, Tha KK
    • Organizer
      国際磁気共鳴医学会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Noninvasive Assessment of Electrical Conductivity Characteristics of Normal and Diseased Liver Using Electric Properties Tomography2018

    • Author(s)
      Tha KK, Katscher U, Ishizaka K, Stehning C, Kudo K, Shirato H
    • Organizer
      国際磁気共鳴医学会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2017-04-28   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi