Patent ID: 8108027

Claim:
A combined positron emission tomography/magnetic resonance imaging apparatus for imaging organs of an examination object in an examination space comprising: a positron emission tomography apparatus including at least one radiation detector to detect positron annihilation radiation from the examination space; and a magnetic resonance imaging apparatus including, at least one gradient coil to generate a magnetic gradient field in the examination space, a radio-frequency antenna device to send excitation pulses into the examination space and to receive magnetic resonance signals from the examination space, the at least one radiation detector and the at least one gradient coil being arranged coaxially around the examination space, a first molding being provided, whose surface coincides with an inner shell of the at least one gradient coil, and a second molding being provided, whose surface coincides with an outer shell of the at least one radiation detector, a distance between the inner and outer shells being constant over a circumference of the shells, a first and a second vacuum seal being arranged along a respective first and a second circumferential line between the first molding and the second molding such that a closed cavity is formed between the first and second vacuum seals, and at least one further vacuum seal, provided in a gap region between the first and the second vacuum seals to subdivide the cavity and to support the moldings on each other.