2016 Volume 34 Issue 4 Pages 227-230
PET (positron emission tomography) is an important molecular imaging method using 511 keV gamma-rays emitted from annihilation of positron tracers. Recently many new developments in scintillator and fast photo-sensor have been investigated. Here the data acquisition and signal processing in PET are reviewed and we introduce multi-channel gamma-ray detector required for PET system.