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, Japan

Volume

2

fYear

1995

fDate

21-28 Oct 1995

Firstpage

1041

Abstract

A time-of-flight (TOF) multi-probe system has been developed to measure the distribution of positron-emitting tracers in the body. The system uses 16 (a pair of 8) 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. The system is designed to increase the number of detector probes up to 32 (a pair of 16) for a better imaging capability

Keywords

biomedical equipment; photomultipliers; positron emission tomography; probes; 180 ps; 2.7 cm; 26 mm; BaF₂; Hamamatsu R5320; coincidence pairs; medical diagnostic imaging; nuclear medicine; photomultiplier tube; positron imaging; positron-emitting tracers distribution; time-of-flight multi-probe system; truncated pyramid BaF₂ crystal; Imaging phantoms; Laboratories; Nuclear medicine; Photomultipliers; Photonic crystals; Positron emission tomography; Probes; Radiation detectors; Solid scintillation detectors; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-3180-X

Type

conf

DOI

10.1109/NSSMIC.1995.510443

Filename

510443