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A new method of measurement of intracranial pressure using a ultrasonic probe

Research Project

Project/Area Number 61480308
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Cerebral neurosurgery
Research InstitutionNagoya University

Principal Investigator

KUCHIWAKI Hiroji  Nagoya University School of Medicine,Lecturer, 医学部, 講師 (60135340)

Co-Investigator(Kenkyū-buntansha) 安藤 和彦  名古屋大学, 医学部, 医員
伊藤 淳樹  名古屋大学, 医学部, 医員
ITOH Jyunik  Nagoya University School of Medicine, Research Fellow
ANDOH Kazuhiko  Nagoya University School of Medicine, Research Fellow
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1987: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1986: ¥3,900,000 (Direct Cost: ¥3,900,000)
KeywordsIntracranial Pressure / Transcranial / Ultrasonic Pulse Echo / 干渉波形 / 頭蓋内圧 / 超音波信号発生器 / 超音波
Research Abstract

Interfering ultrasonic(UT) waves reflected from thin layers, such as dura mater or subarachnoid space, are found to yield considerable information about thr region of reflection. These phenomena were demonstrated by the reflection coefficient(RC) of UT waves.
A spike/ burst pulser transmits UT waves to a newly devised UT probe (5 MHz) which is connected to receiver system. UT - waves from the thin layers in oscilloscope are selected by gate circuit and continuousyl recorded through DC-amplifier during which data of RC by a trigger of electrocardiography are analyzed with computor system (Maximum Entropy Method).
In experimentally raised ICP changes of UT wave- forms well corresponded to those of epidural pressure transducer. The thickness of the thin layers decreased gradually with linear correlation in range of intracranial pressure( 50 - 700 mmH20 ) with hydrostatic or balloon inflation.
In clinical study we recorded the UT wave-form of intracranial pressure on the scalp in the area of bone defect as well as normal skull. Rapid responses in changing on intracranial pressure by UT probe are also observed at neck compression or hyperventilation.
The transcranial UT-pulse echo method and their signal processing by computor are found to be valuable for determining information about intracranial pressure.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 伊藤淳樹, 口脇清治, 長坂昌登, 木野本武久, 高田宗春, 石原仁, 景山直樹: 医学のあゆみ. 138. 529-530 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 伊藤淳樹, 口脇清治, 長坂昌登, 石原仁, 景山直樹, 佐々間宣光, 小倉幸夫: 超音波医学. 14. 111-118 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] H. Kuchiwaki;J. Itoh;H. Ishiguri;K. Andon;Y. Ogura;N. Sakuma;T. Takishita: Intacranial Pressure VII.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Jyunki Itoh, Hiroji Kuchiwaki, Masato Nagasaka, Takehisa Kinomoto, Sohsyun Takada, Hitoshi Ishiguri, Naoki Kageyama: "A study of continuous recording of pulsatile movements of dure using a miniature ultrasonic probe." Igakunoayumi. 138. 529-530 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Jyunki Itoh, Hiroji Kuhciwaki, Masato Nagasaka, Hitoshi Ishiguri, Naoki Kageyama, Nobumitu Sakuma, Sachio Ogura: "A basic study of continuous monitorings of intracranial pressure using a ultrasonic probe - a preliminary report from experimental model-" Japanese fournal of Medical Utrasonics. 14. 111-118 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Hiroji Kuchiwaki, Jyunki Itoh, Hitoshi Ishiguri, Kazuhiko Andoh, Yukio Ogura, Nobumitsu Sakuma, Toshio Takishita.: "An approach to noninvasive analysis of intracranial pressure(ICP) using a ultrasonic probe." Intracranial Pressure VII. VII. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 口脇博治: 超音波医学.

    • Related Report
      1986 Annual Research Report
  • [Publications] 口脇博治: 医学のあゆみ. 138. 529-530 (1986)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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