New technique for adaptive imaging in the presence of distributed aberrations


Journal Article

Acoustic velocity inhomogeneitis in tissue result in aberration of ultrasonic images. These aberrations can be modelled as a near field thin phase screen or as a distributed aberrator. Current techniques for the correction of distributed aberrators are limited to application on point targets. A new technique is proposed using multiple transmits from spatially shifted transmit apertures, called translating transmit apertures, which can remove the decorrelation of speckle with receiver position. Translating transmit apertures, when used in conjunction wit phase conjugate filters, can correct for distributed aberrations in the presence of speckle targets.

Duke Authors

Cited Authors

  • Ng, GC; Freiburger, PD; Walker, WF; Trahey, GE

Published Date

  • December 1, 1995

Published In

Volume / Issue

  • 2 /

Start / End Page

  • 1455 - 1459

International Standard Serial Number (ISSN)

  • 1051-0117

Citation Source

  • Scopus