Title :
A time-of-flight multi-probe system for positron imaging
Author :
Satoh, Nakahiro ; Shimizu, Keiji ; Uchida, Hiroshi ; Yamashita, Takaji ; Tanaka, Eiichi
Author_Institution :
Central Res. Lab., Hamamatsu Photonics KK, Hamakita, Japan
fDate :
6/1/1996 12:00:00 AM
Abstract :
A time-of-flight (TOF) multi-probe system has been developed to measure the distribution of positron-emitting tracers in the body. Time-of-flight information in this system is used as the primary position information in the direction between the detector probes. The system uses two banks of eight detector probes, each of which is composed of a truncated pyramid BaF2 crystal and a 26 mm diameter photomultiplier tube (Hamamatsu R5320). The average coincidence time resolution for possible 64 coincidence pairs is 180 ps FWHM, which corresponds to 2.7 cm in space. The system performance such as count rate and imaging capabilities were evaluated using phantoms. The results show that a low-cost positron imaging system can be constructed using the TOF detector probes
Keywords :
biomedical equipment; photomultipliers; positrons; probes; radioisotope imaging; 180 ps; 26 mm; BaF2; Hamamatsu R5320 photomultiplier tube; coincidence time resolution; count rate; detector probe banks; diagnostic nuclear medicine; imaging capabilities; low-cost positron imaging system; medical instrumentation; phantoms; positron-emitting tracers distribution measurement; system performance; time-of-flight multi-probe system; Laboratories; Photomultipliers; Photonics; Positrons; Probes; Radiation detectors; Solid scintillation detectors; Spatial resolution; System performance; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
