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Abstract #1333

Simultaneous Deep-local Hyperthermia and 1.5T MR Imaging an Experimental Systems Interactions Study

Matthew Tarasek 1 , Tomas Drizdal 2 , Ruben Pellicer 2 , Wouter Numan 2 , Paolo Togni 2 , Gyula Kotek 2 , Gerard van Rhoon 2 , Maarten Paulides 2 , and Desmond Yeo 1

1 MRI, GE global research, Niskayuna, NY, United States, 2 Erasmus Medical Center, Netherlands

The MRlabcollar was designed as a magnetic resonance (MR)-compatible array for simulation guided conformal radiofrequency (RF) hyperthermia treatment of head and neck (H&N) tumors. Here we present a comprehensive characterization of interactions between the MRI scanner and MRlabcollar to analyse MR image quality, especially with simultaneous operation of both RF sub-systems. We characterize image SNR, the relative B1+ uniformity, B0 distortion due to placement of the array, and phase-difference MR thermometry (MRT) maps acquired during RF transmit from the array. Results show that concurrent heating and imaging is feasible with no significant adverse effects on image quality.

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