A Method for Measurement of Sound Speed in Biological Tissues without Deformation
A Method for Measurement of Sound Speed in Biological Tissues without Deformation
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一种在不变形的生物组织中测量声速的方法
DOI：
10.7567/jjaps.30s1.235
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发表时间：
1991
影响因子：
1.5
通讯作者：
Motonao Tanaka
中科院分区：
文献类型：
--
作者：
H. Hachiya;S. Ohtsuki;Motonao Tanaka
生物组织中的声速是重要的诊断信息。传统的声速测量方法通常需要换能器接触试样以测量其厚度。但这种机械接触往往会引起变形，影响活体组织中的血流，使得难以精确评估生物组织中的声速。提出了一种不需要超声探头与生物组织接触的声速测量新方法。在频域中进行传播时间的精确测量，并使用放置样品的流体介质中的声速来评估组织中的声速。讨论了原理和结果。
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.