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Japanese

THE PARTICULARITY OF THE CLINICAL STUDY ABOUT ULTRASONIC ATTENUATION THROUGH BRAIN Hisao MARUTA 1 , Hiroshi HATA 1 , Genichi SUZUKI 1 , Ikuo YAMAOKA 1 , Shigeki KAWASAKI 1 , Kenzo HIRAYAMA 1 1Dept. of the 2nd Surgery, Tokyo Medical and Dental Univ. pp.869-874
Published Date 1966/9/1
DOI https://doi.org/10.11477/mf.1406202103
  • Abstract
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Investigations have been made of the ultrasonic absorption through the lifeless materials for approxi-mately ten years.

Since nineteen-fifties the brain, as one of poly-merized materials, has become the object of ultrasonic measurment.

The brain may not be so different, as one of phy-sical substance, either in vivo or in vitro. Clinically, however, this material has many complicated aspects. Here lies the particularity of the study about ultra-sonic attenuation as a field of clinical medicine.

For the clinical application of the ultrasonic atte-nuation, we find it technically convenient to measure the relative value, i. e. the momentary fluctuation of the ultrasonic attenuation through the objective ma-terials in various clinical conditions.

We experimentally proved that the changes in the ultrasonic attenuation through the brain momentarily reflects the changes in cerebral circulation.

Two clinical conditions, tilting and carbon dioxide loading, which are known to give cerebral blood flow changes and which show reflecting changes in ultra-sonic attenuation through the brain, are discussed.


Copyright © 1966, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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