• Decrease font size
  • Return font size to normal
  • Increase font size
U.S. Department of Health and Human Services

Scientific Publications by FDA Staff

  • Print
  • Share
  • E-mail
-

Search Publications



Fields



Centers











Starting Date


Ending Date


Order by

Entry Details

Ultrasound Med Biol 2014 May;40(5):1001-14

Thermal Safety Simulations of Transient Temperature Rise during Acoustic Radiation Force-Based Ultrasound Elastography.

Liu Y, Herman BA, Soneson JE, Harris GR

Abstract

Ultrasound transient elastography is a new diagnostic imaging technique that uses acoustic radiation force to produce motion in solid tissue via a high-intensity, long-duration "push" beam. In our previous work, we developed analytical models for calculating transient temperature rise, both in soft tissue and at a bone/soft tissue interface, during a single acoustic radiation force impulse (ARFI) imaging frame. The present study expands on these temperature rise calculations, providing applicable range assessment and error analysis for a single ARFI frame. Furthermore, a "virtual source" approach is described for temperature and thermal dose calculation under multiple ARFI frames. By use of this method, the effect of inter-frame cooling duration on temperature prediction is analyzed, and a thermal buildup phenomenon is revealed. Thermal safety assessment indicates that the thermal dose values, especially at the absorptive bone/soft tissue interface, could approach recommended dose thresholds if the cooling interval of multiple-frame ARFI elastography is too short.


Category: Journal Article
PubMed ID: #24548651 DOI: 10.1016/j.ultrasmedbio.2013.11.015
Includes FDA Authors from Scientific Area(s): Medical Devices
Entry Created: 2014-02-20 Entry Last Modified: 2014-05-03
Feedback
-
-