Actions for Initial characterization of a BGO-photodiode detector for high resolution positron emission tomography [electronic resource].

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Initial characterization of a BGO-photodiode detector for high resolution positron emission tomography [electronic resource].

Published
Berkeley, Calif. : Lawrence Berkeley National Laboratory, 1983.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 9 : digital, PDF file
Additional Creators
Lawrence Berkeley National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Spatial resolution in positron emission tomography is currently limited by the resolution of the detectors. This work presents the initial characterization of a detector design using small bismuth germanate (BGO) crystals individually coupled to silicon photodiodes (SPDs) for crystal identification, and coupled in groups to phototubes (PMTs) for coincidence timing. A 3 mm x 3 mm x 3 mm BGO crystal coupled only to an SPD can achieve a 511 keV photopeak resolution of 8.7% FWHM at -150/sup 0/C, using a pulse peaking time of 10 ..mu..s. When two 3 mm x 3 mm x 15 mm BGO crystals are coupled individually to SPDs and also coupled to a common 14 mm diam PMT, the SPDs detect the 511 keV photopeak with a resolution of 30% FWHM at -76/sup 0/C. In coincidence with an opposing 3 mm wide BGO crystal, the SPDs are able to identify the crystal of interaction with good signal-to-noise ratio, and the detector pair resolution is 2 mm FWHM. 32 references, 7 figures, 3 tables.
Report Numbers
E 1.99:lbl-16952
E 1.99: conf-831015-35
conf-831015-35
lbl-16952
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Other Subject(s)
Note
Published through SciTech Connect.
11/01/1983.
"lbl-16952"
" conf-831015-35"
"DE84006750"
Nuclear science symposium, San Francisco, CA, USA, 19 Oct 1983.
Derenzo, S.E.
Funding Information
AC03-76SF00098
View MARC record | catkey: 14794890