Title :
Design of a depth of interaction detector with a PS-PMT for PET
Author :
Murayama, H. ; Ishibashi, H. ; Uchida, Hironaga ; Omura, T. ; Yamashita, T.
Author_Institution :
Nat. Inst. of Radiol. Sci., Chiba, Japan
fDate :
6/1/2000 12:00:00 AM
Abstract :
A detector unit using a depth encoding scheme was designed and evaluated. The detector unit consists of four crystal blocks in a 2×2 array coupled to a position-sensitive photomultiplier tube (PS-PMT) having metal channel dynodes and 4×4 multianodes. Each crystal block consists of three stages of 2×2 GSO arrays of which element size is 3.8 mm×3.8 mm×10 mm. Each scintillation event is mapped on a two dimensional positioning histogram according to the relative ratio of the output signals of the PS-PMT. With appropriate light control in the crystal block, good positioning performance for Cs-137 photons was obtained
Keywords :
gamma-ray detection; image coding; medical image processing; photomultipliers; positron emission tomography; Cs; crystal block; depth encoding scheme; element size; medical diagnostic imaging; medical instrumentation; metal channel dynodes; multianodes; nuclear medicine; position-sensitive photomultiplier tube; positioning performance; scintillation event; Image resolution; Lighting control; Optical arrays; Optical scattering; Photomultipliers; Photonic crystals; Position sensitive particle detectors; Positron emission tomography; Sensor arrays; Solid scintillation detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
