Rapid Dual Echo Ramped Hybrid Encoding MR-Based Attenuation Correction (dRHE-MRAC) for PET/MR

摘要

PurposeIn this study, we propose a rapid acquisition for MR-based attenuation correction (MRAC) in PET/MR imaging, where an ultrashort echo time (UTE) image and an out-of-phase echo image are obtained within a single rapid scan (35sec) at high spatial resolution (1mm³), which allows accurate estimation of a pseudo CT image utilizing 4 class tissue classification (discrete bone, discrete air, and continuous fat and water).