A statistical analysis of phase aberration correction using image quality factors in coherent imaging systems.

Published

Journal Article

A fundamental analysis of phase aberration correction techniques which use speckle brightness-based image equality factors (QFs) to iteratively reduce phase errors is presented. Phase aberration arises from the spatial inhomogeneity of acoustic velocity in human tissue and degrades the performance of diagnostic ultrasonic imaging systems. A theoretical analysis is presented indicating that the mean speckle brightness decreases with root-mean-square (RMS) phase error. A general definition of QFs is given using the probability of error as a criterion of performance. The QF is optimized through minimization of the probability of error under different conditions. The analysis provides a theoretical framework for the current correction technique using QFs under a variety of conditions, and is a useful tool to evaluate new QFs and correction techniques.

Full Text

Duke Authors

Cited Authors

  • Zhao, D; Trahey, GE

Published Date

  • January 1, 1992

Published In

Volume / Issue

  • 11 / 3

Start / End Page

  • 446 - 452

PubMed ID

  • 18222886

Pubmed Central ID

  • 18222886

Electronic International Standard Serial Number (EISSN)

  • 1558-254X

International Standard Serial Number (ISSN)

  • 0278-0062

Digital Object Identifier (DOI)

  • 10.1109/42.158948

Language

  • eng