Beam steering approach for speckle characterization and out-of-plane motion estimation in real tissue

Hassan Rivaz, Richard Zellars, Gregory Hager, Gabor Fichtinger, Emad Boctor

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

Abstract

Out-of-plane motion in freehand 3D ultrasound can be estimated using the correlation of corresponding patches, leading to sensorless freehand 3D ultrasound systems. Previous work has shown that the motion estimation in a beef tissue is systematically underestimated by approximately 33% and that it can be improved to approximately 25% by limiting the correlation calculation to the fully developed speckle (FDS) patches [1]. The improvement in the accuracy is limited because FDS patches are rare in real tissue. Here, we propose beam steering for detecting FDS patches and we show that it significantly improves speckle detection. We further experiment the effect of beam steering on out-of-plane motion estimation using ex-vivo beef liver and steak experiment. Without steered images, we find a 17% error in the liver experiment. Beam steering reduces the error to 9%, a significant improvement which is mainly due to enhanced FDS detection. Beef steak results are even more promising: 14.8% error without beam steering is reduced to 3.2% error.

Original languageEnglish (US)
Title of host publication2007 IEEE Ultrasonics Symposium Proceedings, IUS
Pages781-784
Number of pages4
DOIs
StatePublished - Dec 1 2007
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: Oct 28 2007Oct 31 2007

Publication series

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

Other

Other2007 IEEE Ultrasonics Symposium, IUS
CountryUnited States
CityNew York, NY
Period10/28/0710/31/07

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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