生物介质中的非线性超声传播。
Nonlinear ultrasonic propagation in biological media.
作者信息
Dunn F, Law W K, Frizzell L A
出版信息
Br J Cancer Suppl. 1982 Mar;5:55-8.
Abstract
The nonlinearity parameter B/A for several biological materials was determined by measuring the amplitude of the second harmonic pressure as a function of distance from the source and the amplitude of the fundamental at the source. The B/A values for bovine serum albumin and haemoglobin solutions were found to increase approximately linearly with solution concentration. Blood and homogenized liver exhibit a B/A value similar to a haemoglobin solution of the same dry weight, but whole liver has a greater B/A value.
摘要
通过测量二次谐波压力的幅度作为距源距离的函数以及源处基波的幅度，确定了几种生物材料的非线性参数B/A。发现牛血清白蛋白和血红蛋白溶液的B/A值随溶液浓度近似线性增加。血液和匀浆肝脏的B/A值与相同干重的血红蛋白溶液相似，但全肝的B/A值更大。
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