Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography

S. Srinivasan; R. Righetti; J. Ophir

Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography

S. Srinivasan, R. Righetti, J. Ophir

Houston Methodist

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

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 (SNR_e), the contrast-to-noise ratio (CNR_e), and the spatial resolution. These quality factors depend on the mechanical, acoustic, and signal processing parameters. We find a trade-off between the achievable SNR_e (and CNR_e) 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.

Original language	English (US)
Pages (from-to)	963-964
Number of pages	2
Journal	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	2
State	Published - 2002
Event	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) - Houston, TX, United States Duration: Oct 23 2002 → Oct 26 2002

ASJC Scopus subject areas

Signal Processing
Biomedical Engineering
Computer Vision and Pattern Recognition
Health Informatics

Cite this

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title = "Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography",

abstract = "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.",

author = "S. Srinivasan and R. Righetti and J. Ophir",

note = "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.; 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) ; Conference date: 23-10-2002 Through 26-10-2002",

year = "2002",

language = "English (US)",

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journal = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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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

SN - 0589-1019

VL - 2

SP - 963

EP - 964

JO - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

JF - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

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 -

Tradeoffs between the axial resolution and the signal-to-noise ratio in elastography

Abstract

ASJC Scopus subject areas

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