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Abstract #4363

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

S.M. Mueez Aizaz1,2, Rik P.M. Moonen1,2, Roel Wierts1, Jochem A.J. van der Pol1, Hans Zwart3, Abe J. van der Werf3, Joachim E. Wildberger1,2, Jan A. Bucerius1,2, and M. Eline Kooi1,2

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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