MR compatible hyperthermia devices exploit MR thermometry capabilities for non-invasive treatment monitoring. These devices, which have been tested to be MR-safe, can potentially influence the MR image quality. One such device is the Pyrexar BSD-2000 3D/MR applicator. In this study, we quantitatively evaluated the impact of the applicator for different setups on MR imaging by B1 + and signal-to-noise (SNR) measurements. Our results show 30% decrease in the B1 + transmit efficiency and 20% decrease in the SNR. We have found the biggest impact was caused by the device's water bolus. This effect can be overcome by increasing the B1 transmit gain or using a thinner water bolus in the device design.

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Keywords Hyperthermia, MR Image Quality, MRI, MRT, QA.
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Conference 14th European Conference on Antennas and Propagation, EuCAP 2020
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Organisation Erasmus MC: University Medical Center Rotterdam
Sumser, K. (Kemal), Paulides, M.M, Bellizzi, G.G, van Rhoon, G.C, Hernandez-Tamames, J.A. (Juan A.), & Curto, S. (Sergio). (2020). Influence of the BSD-2000 3D/MR hyperthermia applicator on MR Image Quality: A Quantitative Assessment. In 14th European Conference on Antennas and Propagation, EuCAP 2020. doi:10.23919/EuCAP48036.2020.9135499