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Assessment of Vascularity andviability of the liver and liver tumors using the liver specific contrast agent in MR imaging

Research Project

Project/Area Number 09670921
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionFukui Medical University

Principal Investigator

ISHII Yasushi  Fukui Medical University, Faculty of Medicine, Professor, 医学部, 教授 (00026949)

Co-Investigator(Kenkyū-buntansha) KIMURA Hirohiko  Fukui Medical University, Medical Hospital, Assistant, 医学部附属病院, 助手 (10242596)
MAEDA Masayuki  Fukui Medical University, Faculty of Medicine, Lecturer, 医学部, 講師 (09770688)
YONEKURA Yoshiharu  Fukui Medical University, Biomedical Imaging Reserch Center, Professor, 高エネルギー医学研究センター, 教授 (60135572)
前田 正幸  福井医科大学, 医学部, 助手 (70219278)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥3,000,000 (Direct Cost: ¥3,000,000)
Keywordsmagnetic resonance spectroscopy (MRS) / positron emission tomography (PET) / occlusive carotid artery disease / crebral ischemia / oxygen metabolism / 核磁気共鳴画像 / 脳腫瘍 / 代謝 / positron cmission tomography(PET)
Research Abstract

Carotid occlusive disease may cause ischemic change both in the gray and white matter as a result of hemodynamic compromize. To validate proton magnetic spectroscopy (MRS) in evaluating the carotid occlusive diseases, changes in peakes of choline (Cho), the sum of creatine and phosphocreatine (Cr) and N-acetylaspartate (NAA) of the white matter were compared with the cortical oxygen metabolism measured by positron emission tomography (PET). Eleven patients with unilateral steno-occlusive carotid artery disease underwent both PET and MRS.MRS was performed in the bilateral centrum smiovale, Regional cerebral blood flow, metabolic rate of oxygen (rCMRO2) and oxygen extraction fraction (rOEF) of the crebral cortex were measured by the PET.The asymmetry index(AI) of the NAA/Cr ratio correlated positively with that of rCMRO2(r=0.809, p<0.01). as rCMRO2 is a marker of tissue viability. NAA ratio may reflect viable neuronal component. The Al of the Cho/Cr raio showed significant correlation with that of rOEF (r=0.844. P<0.01). The peak of choline contained the precursors and degradative products in the membrane metabolism, This may indicate membrane damage due to ischemia, as the centrum smiovale is the deep watershed zone. ln conclusion, the metabolic change in centrum semiovale detected by proton MRS reflects a hemodynamically compromized state and usful in evaluating the viability of brain tissue.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 土田千賀: "proton MRSによる内頚動脈系慢性閉塞疾患の脳代謝の評価-PETによる脳循環代謝との比較" 日本医学放射線学会雑誌. 58巻2号. S31 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Tsuchida, C.: "Proton MRS and PET oxygen metabolism in brains of occlusive carotid artery disease." The Journal of Nuclear Medicine. Vol.39(Suppl.). 213P (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Chika Tsuchida: "Proton MR spectroscopy evaluation of brain metabolism in patients with stenoocclusive carotid artery disease : Correlation with cerebral blood flow and oxygen metabolism by PET." Proceedings of 6th ISMRM. Vol.3. 1733 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] C.Tsuchida: "Proton MRS and PET oxygen metabolism in brains of occlusive carotid artery disease" Journal of Japan Radiological Society. 58 (2). S31 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] C.Tsuchida: "Proton MRS and PET oxygen metabolism in brains of occlusive carotid artery disease" The Journal of Nuclear Medicine. 39 (Suppl.). 213 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] C.Tsuchida: "Proton MRS spectroscopy evaluation of brain metabolism in patients with stenoocclusive carotid artery disease : Correlation with cerebral blood flow and oxygen metabolsim by PET" Proceedings of 6th ISMRM. 3. 1733 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 土田 千賀: "proton MRSによる内頚動脈系慢性閉塞疾患の脳代謝の評価-PETによる脳循環代謝との比較" 日本医学放射線学会雑誌. 58巻2号. S31 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Tsuchida, C.: "Proton MRS and PET oxygen metabolism in brains of occlusive carotid artery disease." The Journal of Nuclear Medicine. Vol. 39(Suppl.). 213P (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Chika Tsuchida: "Proton MR spectroscopy evaluation of brain metabolism in patients with stenoocclusive carotid artery disease : Correlation with cerebral blood flow and oxygen metabolism by PET." Proceedings of 6th ISMRM. Vol. 3. 1733 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 木村 浩彦: "Non-contrast MR perfusionの動向-FAIR法を中心に、定量化への鍵-" Innervision. 13巻10号. 10-12 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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