TY - JOUR
T1 - Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography
AU - Srinivasan, S.
AU - Righetti, R.
AU - Ophir, J.
N1 - Funding Information:
This work was supported by the National Cancer Institute program (project P01-CA64597) awarded to the University of Texas Medical School, Houston, TX.
Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 2002
Y1 - 2002
N2 - Conventional strain estimation techniques in ultrasound-elastography utilize cross-correlation of the pre- and post-compression signals. The quality of the resulting strain estimates is typically quantified through several factors such as the elastographic SNR (SNRe), the contrast-to-noise ratio (CNRe), and the spatial resolution. These quality factors depend on the mechanical, acoustic, and signal processing parameters. We find a trade-off between the achievable SNRe (and CNRe) and the axial resolution. We also find that the trade-off occurs only with respect to the signal processing parameters, while for the physical parameters (the mechanical and the acoustic parameters) such a tradeoff does not exist. Simulations and experiments were used to corroborate this hypothesis.
AB - Conventional strain estimation techniques in ultrasound-elastography utilize cross-correlation of the pre- and post-compression signals. The quality of the resulting strain estimates is typically quantified through several factors such as the elastographic SNR (SNRe), the contrast-to-noise ratio (CNRe), and the spatial resolution. These quality factors depend on the mechanical, acoustic, and signal processing parameters. We find a trade-off between the achievable SNRe (and CNRe) and the axial resolution. We also find that the trade-off occurs only with respect to the signal processing parameters, while for the physical parameters (the mechanical and the acoustic parameters) such a tradeoff does not exist. Simulations and experiments were used to corroborate this hypothesis.
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M3 - Conference article
AN - SCOPUS:0036916798
VL - 2
SP - 963
EP - 964
JO - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
JF - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
SN - 1557-170X
T2 - Proceedings of the 2002 IEEE Engineering in Medicine and Biology 24th Annual Conference and the 2002 Fall Meeting of the Biomedical Engineering Society (BMES / EMBS)
Y2 - 23 October 2002 through 26 October 2002
ER -