Abstract #3681
MR-Guided Prostate Hyperthermia with a Commercial Endorectal HIFU Ablation Array
Eugene Ozhinsky 1 , Vasant A. Salgaonkar 2 , Chris J. Diederich 2 , and Viola Rieke 1
1
Department of Radiology and Biomedical
Imaging, University of California San Francisco, San
Francisco, CA, United States,
2
Department
of Radiation Oncology, University of California San
Francisco, San Francisco, CA, United States
The goal of this project was to identify operational
modifications, and assess the feasibility of delivering
protracted MR-guided prostate hyperthermia with a
commercial endorectal ablation array.
Hyperthermia-specific sonications were imple-mented on
ExAblate 2100 prostate phased array ablation system and
performed on a tissue-mimicking phantom. Tem-perature
monitoring was performed on a 3T MRI scanner using a
spoiled gradient echo sequence. These experiments
illustrate the ability to successfully employ
hyperthermia specific beamforming to control the shape
of energy deposition, to deliver long duration power
output with the ExAblate 2100 prostate system, and to
monitor the resulting heat generation with MR
thermometry.
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