Coded pulse excitation for ultrasonic strain imaging

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

Abstract

Decorrelation noise in strain images can be significantly reduced using coded pulse excitation. Linear, frequency-modulated chirp pulses were applied to image tissue mimicking phantoms with 2.5-mm-diameter inclusions that mimick the elastic properdes of breast lesions. We observed a 5-10 dB reduction in echo SNR (eSNR) that led to a doubling of the depth of focus for strain images without a significant loss of axial resolution. Coded excitation allows use of higher transmission frequencies and shorter correlation windows that improve spatial resolution. Strain imaging performance is quantified using SNR strain, modulation transfer function (MTF) and contrast to noise ratio (CNR strain). The performance of chirp and short pulses were compared using simulations and phantom measurements. The challenge is to design robust pulse sequences that can be decoded despite distortions from tissue deformation.

Original languageEnglish (US)
Title of host publication2004 2nd IEEE International Symposium on Biomedical Imaging
Subtitle of host publicationMacro to Nano
Pages964-967
Number of pages4
StatePublished - Dec 1 2004
Externally publishedYes
Event2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano - Arlington, VA, United States
Duration: Apr 15 2004Apr 18 2004

Publication series

Name2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
Volume1

Other

Other2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano
CountryUnited States
CityArlington, VA
Period4/15/044/18/04

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Liu, J., & Insana, M. F. (2004). Coded pulse excitation for ultrasonic strain imaging. In 2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano (pp. 964-967). (2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano; Vol. 1).