论文部分内容阅读
软生物组织中的超声速度,随组织的分子组份与结构、水份及温度等等的不同,在1500m/s—1650m/s范围内变化。试验结果指出,支配组织中超声速度的最重要因素之一是水份。 作者以肝为样品,从理论和实验研究了超声速度对水份的依赖关系。实验用了三种方法:测量具有不同水份的不同兔子的肝样品的声速;测量同样肝样品的声速,但这些样品由于存贮条件不同,其水份各异;对碎肝用水稀释到不同程度,测其声速。
Ultrasound velocity in soft tissue varies with the molecular composition and structure of the tissue, moisture and temperature, etc., in the range of 1500 m / s to 1650 m / s. Test results indicate that one of the most important factors governing the rate of ultrasound in tissue is moisture. The authors used the liver as a sample to study the dependence of ultrasound velocity on moisture from both theoretical and experimental aspects. Three methods were used in the experiment: measuring the speed of sound of different rabbit liver samples with different water contents; measuring the speed of sound of the same liver samples, but the moisture of these samples was different due to different storage conditions; Degree, measured the speed of sound.