Multi-resolution approach to strain imaging

Joyoni Dey, Jerome J. Mai, Michael Insana

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

Abstract

An essential goal of a strain imaging experiment is to balance the desire to apply large deformations, and thereby maximize contrast, with the need to maintain waveform coherence between echoes recorded before and after deformation, and thereby minimize decorrelation noise. The tools available to achieve an optimal balance include control of boundary conditions and application of reconstruction algorithms that use all the available waveform information. This paper describes our work with a multi-resolution strain algorithm employing the maximum-likelihood strategy of filtering and waveform warping at several spatial scales. We found that echo waveform filtering improves the strain CNR when the echo SNR>30 dB and the applied strain >5%. We found that envelope-detected echoes provide more robust estimates than low-pass filtered rf echoes under most practical conditions. The benefits of echo-signal filtering for minimizing decorrelation noise are modest.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Ultrasonics Symposium
EditorsS.C. Schneider, M. Levy, B.R. McAvoy
Pages1853-1856
Number of pages4
Volume2
DOIs
StatePublished - 2000
Externally publishedYes
Event2000 IEEE Ultrasonics Symposium - San Juan, Puerto Rico
Duration: Oct 22 2000Oct 25 2000

Other

Other2000 IEEE Ultrasonics Symposium
CountryPuerto Rico
CitySan Juan
Period10/22/0010/25/00

ASJC Scopus subject areas

  • Engineering(all)

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