DIFFRACTION CORRECTION METHODS FOR PULSE-ECHO ACOUSTIC ATTENUATION ESTIMATION

被引：8

作者：

CESPEDES, I

OPHIR, J

机构：

[1] Ultrasonics Laboratory, Department of Radiology, University of Texas Medical School, Houston

来源：

ULTRASOUND IN MEDICINE AND BIOLOGY | 1990年 / 16卷 / 07期

关键词：

Attenuation estimation; Axial Beam Translation (ABT); Diffraction correction; Inverse Diffraction Filtering (IDF); Phase aberration; Scattering; Spectral difference method; Ultrasound;

D O I：

10.1016/0301-5629(90)90104-K

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We describe computer simulations and water tank experiments for the estimation of the attenuation coefficient in scattering media. The efficacies of the Axial Beam Translation (ABT) and Inverse Diffraction Filtering (IDF) methods in reducing diffraction errors in such estimates are compared throughout the radiation field of a plane transducer. The effect of phase aberration due to the body wall and the effect of the scattering properties of the media are considered. Consistent improvement in the estimation due to ABT is demonstrated as well as unreliable improvement due to IDF which is sensitive to the presence of phase aberration and to changes in scattering. © 1990.

引用

页码：707 / 717

页数：11

共 34 条

[1] INFLUENCE OF PATHOLOGICAL STATE ON THE ACOUSTIC ATTENUATION COEFFICIENT SLOPE OF LIVER [J].