Object dependent compensation of missing array elements

Pai Chi Li, Stephen W. Flax, Emad S. Ebbini, Matthew O'Donnell

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Missing array elements due to discontinuous acoustic windows into the body produce undesired beamforming artifacts and degrade spatial and contrast resolution. To minimize undesired artifacts, an algorithm using multiple receive beams and the totalleast-squares (TLS) method is proposed in this paper. Results show that this algorithm can effectively reduce imperfections in the point spread function of the imager. Combined with local scatterer statistics, the algorithm is modified for compensation on distributed scattering sources. Results also indicate that compensated images are comparable to full array images. This method, therefore, can enhance detection of low contrast lesions using large phased array apertures.

Original languageEnglish (US)
Title of host publication1992 Ultrasonics Symposium Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)0780305620
StatePublished - Jan 1 1992
Externally publishedYes
Event1992 Ultrasonics Symposium - Tucson, United States
Duration: Oct 20 1992Oct 23 1992

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117


Conference1992 Ultrasonics Symposium
CountryUnited States

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