Statistics of ultrasonic scatterer size estimation with a reference phantom

被引：44

作者：

Gerig, A ^{[1
]}

Zagzebski, J ^{[1
]}

Varghese, T ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Med Phys, Madison, WI 53706 USA

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2003年 / 113卷 / 06期

关键词：

D O I：

10.1121/1.1568945

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A theoretical expression for the variance of scatterer size estimates is derived, for a modified least squares size estimator used in conjunction, with a reference phantom method for backscatter coefficient measurement. A Gaussian spatial amocorrelation function is assumed. Simulations and phantom experiments were performed to verify the results for backscatter and size variances. The dependence of size estimate errors upon free experimental parameters is explored, Implications of the findings for the optimization of scatterer size estimation are discussed. The utility of scatterer size parametric imaging is examined through the signal to noise ratio comparison with standard ultrasonic B-mode imaging. (C) 2003 Acoustical Society of America.

引用

页码：3430 / 3437

页数：8

共 17 条

[1]

Bevington P., 2002, Data Reduction and Error Analysis for the Physical Sciences, V3rd ed.

[2] Error bounds on ultrasonic scatterer size estimates [J].