POSITRON EMISSION TOMOGRAPHY-MAGNETIC RESONANCE TOMOGRAPHY COMPOUND APPARATUS

摘要

PPROBLEM TO BE SOLVED: To satisfy a radiation protection reference value for protecting the periphery of a measuring device favorably as much as possible and to eliminate interfering environmental influence to the measuring device. PSOLUTION: This positron emission tomography-magnetic resonance tomography compound apparatus includes: a positron emission tomographic apparatus 3 provided with a radiation detector 4 for detecting a positron annihilation radiation from an inspection space 2; and a magnetic resonance tomographic apparatus 5 provided with a static magnetic field magnet coil 6 generating a static magnetic field in the inspection space 2, an oblique magnetic coil 7 generating an oblique magnetic filed in the inspection space 2, and a high-frequency antenna device 8 for transmitting an excitation pulse in the inspection space 2 and receiving a magnetic resonance signal from the inspection space 2, wherein the radiation detector 4 and the oblique magnetic coil 7 are disposed coaxially and at the substantially same axial height in the periphery of the inspection space 2. The apparatus is provided with a shielding device 14 having a shield element 15 for attenuating a static magnetic field, an oblique magnetic field and annihilation radiation outside a vehicle housing 11. PCOPYRIGHT: (C)2009,JPO&INPIT