Abstract #4363

Evaluation of attenuation reduction of a dedicated carotid PET/MRI coil

S.M. Mueez Aizaz^1,2, Rik P.M. Moonen^1,2, Roel Wierts¹, Jochem A.J. van der Pol¹, Hans Zwart³, Abe J. van der Werf³, Joachim E. Wildberger^1,2, Jan A. Bucerius^1,2, and M. Eline Kooi^1,2

¹Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, Netherlands, ²CARIM School for Cardiovascular Diseases, Maastricht, Netherlands, ³Machnet B.V, Roden, Netherlands

Dedicated RF coils are required to acquire high resolution MR images. These RF coils are in the PET field of view in a PET/MRI scanner. Therefore, attenuation from these coils can cause bias in PET quantification. This study compares a newly developed dedicated PET/MRI RF coil with a coil designed for MRI-only. Both a phantom and patients injected with 18F-FDG were scanned with both coils and without a dedicated coil (baseline). Activity measured in the phantom was significantly reduced with the MRI-only coil compared to the new coil, which did not show any significant attenuation effect. Results in patients support this finding.

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