Attenuation Effect of PET Images with and Without the Magnetic Resonance Breast Coil using Various MR Attenuation Correction Sequences

Abstract

The present study aims to confirm the attenuation correction (AC) in positron emission tomography (PET) images using various magnetic resonance (MR) sequences with and without the MR breast radiofrequency (RF) coil, and thus to evaluate the attenuation effect of the MR breast RF coil. To that purpose, we reconstructed non-attenuated PET data using the MR AC(Dixon-CAIPI), MR AC(UTE), and MR AC(Dixon-GRAPPA) sequences. The results indicated that the signal loss of the PET image with the MR breast RF coil was the lowest when the MR AC(Dixon-GRAPPA) sequence was applied. In conclusion, the MR AC(Dixon-GRAPPA) sequence maintained PET image quality when using the MR breast RF coil during PET/MR scanning.