====== PET-MRI ====== Positron emission tomography–magnetic resonance imaging (PET–MRI) is a hybrid imaging technology that incorporates [[magnetic resonance imaging]] (MRI) soft tissue morphological imaging and [[positron emission tomography]] (PET) functional imaging. Simultaneous [[PET-MRI]] detection was first demonstrated in [[1997]], however it took another 13 years, and new detector technologies, for clinical systems to become commercially available.