It is widely accepted that the superimposition of anatomical information improves the predictive value of functional and molecular imaging. This is reflected in the success of hybrid systems using combined PET and CT scanner . But the combination of positron tomography and magnetic resonance imaging can offer great advantages , such as higher contrast with the soft tissue anatomical MRI images with simultaneous exposure to a much lower radiation dose to the patient. Correlative imaging will open up exciting new applications in oncology, neurology and cardiology . At present, magnetic fields compatibility with PET detectors remains a technical challenge and the restriction of space on the magnet has almost been resolved. There is no fully developed and mature clinical MR / PET system in this market, although this time the three largest manufacturers indicate system availability MR-PET.
