Tof - swellable, a high-resolution pet - detector

摘要

It is an array (30) of position-sensitive avalanches photo diodes (32) is created, in which the output signal contacts (48) of the corners of each photodiode in order to read out together are combined into groups. Each photodiode on a single wafer can be arranged or chip, wherein the photodiodes by a trench or a groove (42) are separated. The corners of each photodiode have contacts for reading out of signals on, the of incidence of events of gamma quanta reach in an adjoining scintillator (28) are derived. The grouping of the contacts to common output channels reduces the number of the output channels, wherein it is still a localization of the gamma quanta of incidence of events in the scintillator crystals are permits. The photodiode array to a surface of a scintillator can be disposed, wherein a photomultiplier tube (24) to another surface is to be arranged adjacent. The detector arrangement may for the positrons emission tomography image and similar techniques are used for plugging.