PMID: 15217233Jun 26, 2004Paper

On the thermal effects associated with radiation force imaging of soft tissue

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Mark L Palmeri, Kathryn R Nightingale

Abstract

Several laboratories are investigating the use of acoustic radiation force to image the mechanical properties of tissue. Acoustic Radiation Force Impulse (ARFI) imaging is one approach that uses brief, high-intensity, focused ultrasound pulses to generate radiation force in tissue. This radiation force generates tissue displacements that are tracked using conventional correlation-based ultrasound methods. The tissue response provides a mechanism to discern mechanical properties of the tissue. The acoustic energy that is absorbed by tissue generates radiation force and tissue heating. A finite element methods model of acoustic heating has been developed that models the thermal response of different tissues during short duration radiation force application. The beam sequences and focal configurations used during ARFI imaging are modeled herein; the results of these thermal models can be extended to the heating due to absorption associated with other radiation force-based imaging modalities. ARFI-induced thermal diffusivity patterns are functions of the transducer f-number, the tissue absorption, and the temporal and spatial spacing of adjacent ARFI interrogations. Cooling time constants are on the order of several seconds. Tissue...Continue Reading

Citations

Jul 25, 2006·Physics in Medicine and Biology·B J FaheyG E Trahey
May 25, 2007·Ultrasonic Imaging·Brian J FaheyGregg E Trahey
Jan 10, 2008·Physics in Medicine and Biology·B J FaheyG E Trahey
Jul 28, 2009·Ultrasonic Imaging·Stephen McAleaveyManoj Menon
Sep 24, 2009·Ultrasonic Imaging·Mark L PalmeriKathryn R Nightingale
Nov 10, 2009·The Journal of the Acoustical Society of America·Richard R BouchardPaul A Dayton
Jul 1, 2012·Journal of Medical Ultrasonics·Marie TabaruKunio Hashiba
Jul 22, 2014·International Journal for Numerical Methods in Biomedical Engineering·Abas AbdoliM Salik Jahania

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