Quality factors for phase aberration correction in medical ultrasound
Published
Journal Article
© 1990 SPIE. All rights reserved. Spatial inhomogeneities in the acoustic velocity of tissues degrade the contrast and resolution of diagnostic ultrasonic images. A system which iteratively adjusts the phases of signals transmitted and received from individual elements in a phased array scanner in order to restore image quality when imaging through inhomogeneous layers is described. The adjustments are selected to maximize a quality factor in an operator-selectable region-of-interest. The use of several quality factors in improving image quality, including the average local and the peak echo magnitude of diffuse and point-like targets and integral powers of these magnitudes were investigated. Theory and experimental results related to these investigations is presented.
Full Text
Duke Authors
Cited Authors
- Trahey, GE; Zhao, D
Published Date
- July 1, 1990
Published In
Volume / Issue
- 1231 /
Start / End Page
- 40 - 49
Electronic International Standard Serial Number (EISSN)
- 1996-756X
International Standard Serial Number (ISSN)
- 0277-786X
Digital Object Identifier (DOI)
- 10.1117/12.18782
Citation Source
- Scopus