使用聚焦换能器精确进行与深度无关的声学反向散射系数测定。

Accurate depth-independent determination of acoustic backscatter coefficients with focused transducers.

作者信息

Hall T J, Madsen E L, Zagzebski J A, Boote E J

机构信息

Department of Medical Physics, University of Wisconsin, Madison 53706.

出版信息

J Acoust Soc Am. 1989 Jun;85(6):2410-6. doi: 10.1121/1.397789.

DOI:10.1121/1.397789

PMID:2745872

Abstract

The accuracy of a method of data reduction for determining acoustic backscatter coefficients was tested using focused transducers and narrow-band pulses. Two phantoms with well-defined scattering properties were the bases of the tests, one having low attenuation and one with tissue-mimicking attenuation. The experimentally determined backscatter coefficients were found to be independent of transducer-to-scattering-volume distance and to agree very well with theoretical values, typically within 10%.

摘要

使用聚焦换能器和窄带脉冲对一种用于确定声学反向散射系数的数据简化方法的准确性进行了测试。两个具有明确散射特性的体模是测试的基础，一个具有低衰减，另一个具有组织模拟衰减。实验确定的反向散射系数被发现与换能器到散射体积的距离无关，并且与理论值非常吻合，通常在10%以内。