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Development of a cerebral vascular audiospectroscope for early, noninvasive and simplified diagnosis of cerebral vascular lesions

Research Project

Project/Area Number 11671363
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Cerebral neurosurgery
Research InstitutionShinshu University School of Medicine

Principal Investigator

KYOSHIMA Kazuhiko  Shinshu University, Medicine, Associate Prof., 医学部, 助教授 (90126673)

Co-Investigator(Kenkyū-buntansha) HASEGAWA Hirosi  Utsunomiya University, Engineering, Assistant Prof., 工学部, 助手 (50272761)
KASUGA Masao  Utsunomiya University, Engineering, Professor, 工学部, 教授 (00280909)
OIKAWA Susumu  Shinshu University, Medicine, Assistant Prof., 医学部, 助手 (50242699)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1999: ¥2,800,000 (Direct Cost: ¥2,800,000)
Keywordsnoninvasive audiospectroscope / blood flow sound / early diagnosis / 早期診断 / 脳血管障害
Research Abstract

We used trial equipment to make a preliminary analysis of the influence of an artifact, the spectral analysis of blood flow sounds, in an experimental dos model of aneurysm and occlusion by using different types of sensors or band-pass-filters. On basis of the results of this analysis, we have produced an improved small-scale model of a cerebral vascular auditospectroscope (CeVASS), as well as newly designed soundproof apparatus
With this system, a passive sensor and a band-pass-filter (200Hz-2kHz), we measured and analyzed blood flow sounds of patients with cerebral aneurysms and arterial occlusions (two patients each). The sounds were measured bilaterally at the cervix (bifurcation of the common internal carotid artery), forehead, eyes and the temples. Two patients with an aneurysm and one with an occlusion showed a spectral peak in zones between 250 and 750 Hz. Another study of artifacts in cerebral vascular audiospectroscopy (CeVASS) made it possible to reduce artifacts by a maximum of 3 dB.
To improve the precision of detection with the CeVASS, further basic and clinical studies are required.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report

Research Products

(14 results)

All Other

All Publications (14 results)

  • [Publications] 富永光俊 他5名: "血流音のスペクトル解析による脳血管障害の検出"電子情報通信学会総合大会講演論文集. D-7-49. 156 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 皆川優子 他4名: "弾性球殻の振動解析"日本音響学会1999年秋季研究発表会講演論文集. 3-5-3. 457-458 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 皆川優子 他4名: "動脈瘤モデルとしての弾性球殻の振動解析"電子情報通信学会技術研究報告HIP. 99-72. 47-51 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 皆川優子 他5名: "弾性球殻の振動の測定"日本音響学会2000年春季研究発表会講演論文集. 1-6-8. 431-432 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kato Y, et. al.: "Considerations on the artifacts in a cerebral vascular audiospectroscopy (CeVASS) using spectral and cross-spectral analysis"Proceeding of ITC-CSCC 2000. 221-224 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Kato Y, Hasedawa H, Kasuga M, Kyoshima K, Muraoka S: "Considerations on the artifacts in a cerebral vascular audiospectroscopy (CeVASS) using spectral and cross-spectral analysis."Proceeding of ITC-CSCC 2000. 221-224 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 富永光俊 他5名: "血流音のスペクトル解析による脳血管障害の検出"電子情報通信学会総合大会講演論文集. D-7-49. 156 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 皆川優子 他4名: "弾性球殻の振動解析"日本音響学会1999年秋季研究発表会講演論文集. 3-5-3. 457-458 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 皆川優子 他4名: "動脈瘤モデルとしての弾性球殻の振動解析"電子情報通信学会技術研究報告HIP. 99-72. 47-51 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 皆川優子 他5名: "弾性球殻の振動の測定"日本音響学会2000年春季研究発表会講演論文集. 1-6-8. 431-432 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Kato Y, et.al.: "Considerations on the artifacts in a cerebral vascular audiospectroscopy (CeVASS) using spectral and cross-spectral analysis"Proceeding of ITC-CSCC 2000. 221-224 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 皆川優子、他5名: "弾性球殻の振動解析"日本音響学会1999年秋季研究発表会講演論文集. 3-5-3. 457-458 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 皆川優子、他4名: "動脈瘤モデルとしての弾性球殻の振動解析"電子情報通信学会技術研究報告. HIP99-72. 47-51 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 皆川優子、他5名: "弾性球殻の振動の測定"日本音響学会2000年春季研究発表会講演論文集. 1-6-8. 431-432 (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-03-31   Modified: 2016-04-21  

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