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Title
Japanese: 
English:A Method for Measurement of Sound Speed in Biological Tissues without Deformation 
Author
Japanese: 蜂屋 弘之, 大槻 茂雄, 田中 元直.  
English: Hiroyuki Hachiya, Shigeo Ohtsuki, Motonao Tanaka.  
Language English 
Journal/Book name
Japanese: 
English:Japanese Journal of Applied Physics 
Volume, Number, Page Vol. 30    No. Supplement 30-1    pp. 235-237
Published date May 1991 
Publisher
Japanese: 
English:The Japan Society of Applied Physics 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://jjap.ipap.jp/link?JJAPS/30S1/235
 
DOI https://doi.org/10.7567/JJAPS.30S1.235
Abstract The sound speed in biological tissues is important diagnostic information. Conventional methods of sound speed measurement generally require that transducers contact the specimen to measure its thickness. But this mechanical contact often causes deformation and affects the blood flow in living tissues, making it difficult to precisely evaluate the sound speed in biological tissues. A new method of sound speed measurement is proposed which does not require the contact of ultrasonic probes to living tissues. Precise measurement of travel times is made in the frequency domain and the sound speed in tissues is evaluated using the sound speed in fluid medium which the specimen is placed. The principle and results are discussed.

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