FIELD: physics.
SUBSTANCE: imaging system has a rim of radiation detectors (60a, 60b, 60'), an entirely annular electronic circuit board (62, 62'), arranged coaxially with the rim of radiation detectors and functionally coupled with the rim of radiation detectors, for generating electrical signals indicating detection of radiation by the rim of radiation detectors. The rim of radiation detectors and the entirely annular electronic circuit board are configured to detect radiation of 511 keV, which indicates electron-positron annihilation events, and a magnetic resonance scanner (30), wherein the entirely annular electronic circuit board (62, 62') crosses the isoplane (66) which forms magnetic field of the gradient coil (10, 10') of the magnetic resonance scanner.
EFFECT: reduced eddy currents in a PET annular rim.
11 cl, 6 dwg
