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

Research output: Contribution to journal › Conference article

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

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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",

year = "2002",

language = "English (US)",

volume = "2",

pages = "963--964",

journal = "Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference",

issn = "1557-170X",

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

note = "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",

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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.

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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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

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