Effects of Simultaneous Operation on the Biograph MMR

Sebastian Frst¹, Isabel Dregely¹, Stephan Nekolla¹, Markus Schwaiger¹, Sibylle Ziegler¹

The introduction and immediate success of combined positron emission tomography (PET) and computed tomography (CT) scanners in the clinical environment have significantly increased interest in other multimodal imaging systems and accelerated their development, with PET and MR being in the centre of the efforts. Previous studies already showed that the performance of the first integrated whole-body PET/MR machine, the Biograph mMR, compares well to the one of stand-alone PET and MR scanners. The aim of the present work was to investigate the effects of MR sequences on PET data acquisition with a focus on energy spectra and count rates.