A PHASE ABERRATION CORRECTION METHOD FOR ULTRASOUND IMAGING

被引：53

作者：

KARAMAN, M ^{[1
]}

KOYMEN, H ^{[1
]}

ATALAR, A ^{[1
]}

ODONNELL, M ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1993年 / 40卷 / 04期

关键词：

D O I：

10.1109/58.251275

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A computationally efficient method for phase aberration correction in ultrasound imaging is presented. The method is based on time delay estimation via minimization of the sum of absolute differences between radio frequency samples of adjacent array elements. Effects of averaging estimated aberration patterns over scan angles, and truncation to a single bit wordlength are examined. Phase distortions due to near-field inhomogeneities are simulated using silicone rubber aberrators. Performance of the method is tested using experimental data. Simulation studies addressing different factors affecting efficiency of the method, such as the number of iterations, window length, and the number of scan angles used for averaging, are presented. Images of a standard resolution phantom are reconstructed and used for qualitative testing.

引用

页码：275 / 282

页数：8

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