Noise minimization by multicompression approach in elasticity imaging

Huini Du, Jie Liu, Claire Pellot-Barakat, Michael F. Insana

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

Abstract

Breast lesion visibility in static strain imaging ultimately is noise limited. When correlation and related techniques are applied to estimate local displacements between two echo frames recorded before and after a deformation, target contrast increases linearly with the amount of deformation applied. However, above some deformation threshold, decorrelation noise increases more than contrast such that lesion visibility is severely reduced. Multicompression methods avoid this problem by accumulating displacements from many small deformations to provide the same net increase in lesion contrast as one large deformation but with minimal decorrelation noise. Unfortunately multicompression approaches accumulate echo noise (electronic and sampling) with each deformation step as contrast builds so that lesion visibility can again be reduced if the applied deformation increment is too small. This paper uses signal models and analysis techniques to develop multicompression strategies that minimize strain image noise. The analysis predicts that displacement variance is minimal when the applied strain increment is 0.0035 for typical breast imaging conditions. Predictions are verified experimentally with gelatin phantoms. For in vivo breast imaging, a strain increment as low as 0.0015 is recommended for minimal noise because of the high heterogeneity of the breast tissue.

Original languageEnglish (US)
Title of host publicationProceedings - 2004 IEEE Ultrasonics Symposium
Subtitle of host publicationA Conference of the IEEE International Ultrasonics, Ferroelectrics, and Frequency Control Society, UFFC-S
EditorsM.P. Yuhas
Pages32-35
Number of pages4
DOIs
StatePublished - 2004
Externally publishedYes
Event2004 IEEE Ultrasonics Symposium - Montreal, Que., Canada
Duration: Aug 23 2004Aug 27 2004

Publication series

NameProceedings - IEEE Ultrasonics Symposium
Volume1
ISSN (Print)1051-0117

Other

Other2004 IEEE Ultrasonics Symposium
CountryCanada
CityMontreal, Que.
Period8/23/048/27/04

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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