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Browse Journals & Magazines > Ultrasonics, Ferroelectrics a ...> Volume:37 Issue:5 Help

Experimental results with a real-time adaptive ultrasonic imaging system for viewing through distorting media

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4 Author(s)
Trahey, G. ; Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA ; Zhao, D. ; Miglin, J.A. ; Smith, S.W.

An online adaptive phased-array ultrasonic imaging system capable of markedly improving the detectability of targets viewed through inhomogeneous media is described. An online adaptive phase correction technique implemented on a research phased-array scanner is described. The theoretical basis for this technique is presented by describing the relationship between the magnitude of phase aberrations and the regional brightness of speckle and pointlike targets. The system currently generates a corrected image in approximately 0.1 s and utilizes no prior knowledge of the aberrating media or the target. The adaptive imaging algorithm uses regional target brightness as a quality factor. The results of in vitro tests with this system using electronic and physical aberrators for both diffuse and pointlike targets are presented.<>

Published in:
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on  (Volume:37 ,  Issue: 5 )

Date of Publication: Sept. 1990

Page(s):
418 - 427
ISSN :
0885-3010
INSPEC Accession Number:
3770774
Digital Object Identifier :
10.1109/58.105248
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Sept. 1990
Sponsored by :
IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society
PubMed ID :
18285059

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