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Abstract #1288

Feasibility study of novel 8-channel stacked 1H/31P transceiver coil as PET insert for 7T MRI

Ria Forner1, Woutjan Branderhorst1, Debra Rivera2, Alexander Raaijmakers1,2, Dimitri Welting1, and Dennis Klomp1
1UMC Utrecht, Utrecht, Netherlands, 2Eindhoven University of Technology, Eindhoven, Netherlands


The feasibility of simultaneous 1H/31P PET/MR imaging added-on to an existing 7T MRI system was assessed. Space constraints preclude using whole-body birdcages. Instead, an 8-channel 1H dipole array stacked with additional 8-31P channels is set up. By positioning PET detectors between the RF-shield and gradient coil, further shielding of the PET-crystals and electronics can be omitted. 8-channel 31P scans had a higher SNR compared to a birdcage setup. The 1H/31P setup gives ~5% degradation of PET sensitivity. Similarly, the impact of the new setup (proximity of the RF shield) was insignificant for MRI performance at both frequencies.

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