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Proceedings Paper

Real-time acoustic radiation force impulse imaging
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Paper Abstract

Acoustic Radiation Force Impulse (ARFI) imaging uses short duration acoustic pulses to generate and subsequently determine localized displacements in tissue. Time delay estimators, such as normalized cross correlation and phase shift estimation, form the computational basis for ARFI imaging. This paper considers these algorithms and the effects of noise, interpolation, and quadrature demodulation on the accuracy of the time delay estimates. These results are used to implement a real-time ARFI imaging system and in an ex vivo liver ablation study.

Paper Details

Date Published: 12 April 2005
PDF: 10 pages
Proc. SPIE 5750, Medical Imaging 2005: Ultrasonic Imaging and Signal Processing, (12 April 2005); doi: 10.1117/12.595846
Show Author Affiliations
Gianmarco F. Pinton, Duke Univ. (United States)
Stephen A. McAleavey, Duke Univ. (United States)
Jeremy J. Dahl, Duke Univ. (United States)
Kathryn R. Nightingale, Duke Univ. (United States)
Gregg E. Trahey, Duke Univ. (United States)


Published in SPIE Proceedings Vol. 5750:
Medical Imaging 2005: Ultrasonic Imaging and Signal Processing
William F. Walker; Stanislav Y. Emelianov, Editor(s)

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