Title :
Characteristics of a pair of small field-of-view LSO scintillation cameras
Author :
Seidel, J. ; Gandler, W.R. ; Green, M.V.
Author_Institution :
Dept. of Nucl. Med., Nat. Inst. of Health, Bethesda, MD, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
The authors created two miniature scintillation cameras by coupling identical, thin LSO crystals to position sensitive photomultiplier tubes (PSPMTs). The performance of these cameras was established in both single photon and coincidence imaging modes and in relation to similar gamma cameras equipped with NaI(Tl) crystals. The intrinsic spatial resolution of the LSO cameras was 2.3 mm at 140 keV and 1.2 mm at 511 keV. The coincidence time resolution was 3 ns with an energy resolution of 16.5% at 511 keV. With no sources present, an intrinsic event rate of 300/sec/cm3 of LSO from 176Lu was observed. Although this background count rate may be a limitation in some applications, LSO PSPMT scintillation cameras offer several important performance advantages over similar NaI(Tl) and BGO cameras that include improved count rate performance, coincidence timing, stopping power relative to NaI, and energy resolution relative to BGO
Keywords :
biomedical equipment; cameras; photomultipliers; position sensitive particle detectors; radioisotope imaging; solid scintillation detectors; 140 keV; 3 ns; 511 keV; 176Lu; BGO camera; Lu; Lu2(SiO4)O:Ce; NaI(Tl); NaI:Tl; coincidence imaging mode; coincidence timing; count rate performance; diagnostic nuclear medicine; energy resolution; medical diagnostic imaging; medical instrumentation; miniature scintillation cameras; position sensitive photomultiplier tubes; single photon imaging mode; small field-of-view LSO scintillation cameras; stopping power; Biomedical imaging; Cameras; Computational fluid dynamics; Crystalline materials; Energy resolution; Optical imaging; Photomultipliers; Photonic crystals; Spatial resolution; Surface treatment;
Journal_Title :
Nuclear Science, IEEE Transactions on
