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Ultrasound echo decorrelation due to acoustic radiation force

Publication ,  Conference
Viola, F; Walker, WF
Published in: Proceedings of the IEEE Ultrasonics Symposium
December 1, 2002

Several groups have proposed the use of acoustic radiation force as a means to characterize the mechanical properties of biological tissues. These approaches are based on the estimation of time delays between successively acquired echo lines when an internal deformation is applied. The ensemble of these delays forms time-displacement curve that holds information about the viscoelastic response of the tissue under interrogation. The performance of such techniques is strongly dependent on the accuracy of the time delay estimates. Although noise places significant limits on the estimation process, echo decorrelation will also contribute to reduce the quality of the delay estimates. This decorrelation is similar to that observed in conventional axial elastography, even though the deformation field that results from acoustic radiation force is more complex than the one produced by axial elastography. In this paper we use analytical and computational methods to predict the decorrelation generated in acoustic radiation force imaging. We substitute derived correlation coefficients into the Cramer-Rao Lower Bound (CRLB) to predict fundamental limits on the performance of radiation force based elasticity estimation.

Duke Scholars

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2002

Volume

2

Start / End Page

1903 / 1906
 

Citation

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Viola, F., & Walker, W. F. (2002). Ultrasound echo decorrelation due to acoustic radiation force. In Proceedings of the IEEE Ultrasonics Symposium (Vol. 2, pp. 1903–1906).
Viola, F., and W. F. Walker. “Ultrasound echo decorrelation due to acoustic radiation force.” In Proceedings of the IEEE Ultrasonics Symposium, 2:1903–6, 2002.
Viola F, Walker WF. Ultrasound echo decorrelation due to acoustic radiation force. In: Proceedings of the IEEE Ultrasonics Symposium. 2002. p. 1903–6.
Viola, F., and W. F. Walker. “Ultrasound echo decorrelation due to acoustic radiation force.” Proceedings of the IEEE Ultrasonics Symposium, vol. 2, 2002, pp. 1903–06.
Viola F, Walker WF. Ultrasound echo decorrelation due to acoustic radiation force. Proceedings of the IEEE Ultrasonics Symposium. 2002. p. 1903–1906.

Published In

Proceedings of the IEEE Ultrasonics Symposium

ISSN

1051-0117

Publication Date

December 1, 2002

Volume

2

Start / End Page

1903 / 1906