A novel phase aberration correction technique based on local target motion


Journal Article

Inhomogeneity in acoustic velocity in tissue can introduce phase errors to diagnostic ultrasonic imaging systems and therefore degrade image quality. A novel technique for phase correction, based on the mean difference of specific brightness, that employs echoes from moving targets as a quality factor is described. The authors present the fundamental statistics of the mean-speckle-brightness-based quality factors, which are concerned only with diffuse stationary targets, and the mean difference of speckle-brightness-based quality factors. A comparison of the two types of quality factors is also included. The results show that the difference-based quality factors are viable for phase correction when a moving target is present in the field of view. A theoretical consideration indicates that the signal-to-noise ratio of the difference-based factors is worse than that of the mean-speckle-brightness-based factors with or without the presence of system noise.

Duke Authors

Cited Authors

  • Zhao, D; Trahey, GE

Published Date

  • December 1, 1990

Published In

  • Ultrasonics Symposium Proceedings

Volume / Issue

  • 3 /

Start / End Page

  • 1609 - 1612

International Standard Serial Number (ISSN)

  • 0090-5607

Citation Source

  • Scopus