Testing 144- and 256-crystal BGO block detectors

Author

Rogers, Joel G. ; Nutt, Ronald ; Andreaco, Mark ; Williams, C.W.

Author_Institution

TRIUMF, Vancouver, BC, Canada

Volume

41

Issue

4

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

1423

Lastpage

1429

Abstract

New block detectors have been fabricated incorporating large numbers of small crystals. We evaluate and compare the performance of the new detectors with a standard 64-crystal block detector from Siemans-CTI. The new detectors demonstrate greatly improved imaging capability for 511 keV gamma rays. Future PET tomographs incorporating such detectors should produce substantially better volume images with little increase in tomograph manufacturing costs. The detectors will require a new type of automatic calibration procedure. Various such procedures have been tested and are discussed. A technique using higher energy gamma rays has shown special promise

Keywords

bismuth compounds; calibration; gamma-ray detection and measurement; radioisotope scanning and imaging; scintillation counters; 511 keV; BGO block detectors; Bi₄Ge₃O₁₂; PET tomographs; automatic calibration; gamma rays; imaging capability; positron emission tomography; tomograph manufacturing costs; Calibration; Costs; Crystals; Gamma ray detection; Gamma ray detectors; Gamma rays; Manufacturing; Optical imaging; Positron emission tomography; Testing;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.322926

Filename

322926