Translator Disclaimer
1 July 1990 Quality factors for phase-aberration correction in medical ultrasound
Author Affiliations +
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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregg E. Trahey and Danhua Zhao "Quality factors for phase-aberration correction in medical ultrasound", Proc. SPIE 1231, Medical Imaging IV: Image Formation, (1 July 1990);

Back to Top