PET-MRI SCANNERS

摘要

The PET-MRI scanners (100, 200) of the embodiments are provided with: a static magnetic field magnet (1); a gradient coil (3); high-frequency coils (5, 35); an MR image reconstruction unit (10); PET detectors (13, 14, 43, 44); and a PET image reconstruction unit (16). The high-frequency coils (5, 35) apply a high-frequency magnetic field to a subject placed inside a static magnetic field, and detect magnetic resonance signals emitted from the subject by applying the high-frequency magnetic field and a gradient magnetic field. The PET detectors (13, 14, 43, 44) are formed in a ring shape, and detect gamma rays emitted from a positron-emitting radionuclide administered to the subject. Coils (18, 19, 48, 49) contained in the high-frequency coils are formed by first high-frequency shields (21, 22, 51, 52), which cover the outer surface of the PET detectors (13, 14, 43, 44).