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Abstract #0360

Safe 7T MRI of tissues neighboring Mg-based biodegradable implants using parallel transmission

Mostafa Berangi1,2, Andre Kuehne1, and Thoralf Niendorf1,2
1MRI.TOOLS GmbH, Berlin, Germany, 2Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany

Bio-degradable implants have the benefit of eliminating implant removal surgery. Yet, it’s essential to monitor the implant and tissue\bone after implementation. MRI monitoring in the vicinity of the implant might be compromised by tissue heating and transmission field inhomogeneities. To address these challenges here an RF transceiver array is designed, manufactured and evaluated aiming to facilitate 7T MRI in the vicinity of implants. For this purpose, EMF simulations are performed to derive an optimum excitation vector that reduces local RF power deposition while ensuring a proper B1+-field. The RF array is evaluated in phantom experiments and benchmarked with the simulations.

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