Initial Characterization of a Bgo-Photodiode Detector for High Resolution Positron Emission Tomography
- 1 February 1984
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 31 (1), 620-626
- https://doi.org/10.1109/tns.1984.4333331
Abstract
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 (SPOs) for crystal identification, and coupled in groups to phototubes (PMTs) for coincidence timing. A 3 mm × 3 mm × 3 mm BGO crystal coupled only to a SPD can achieve a 511 keV photopeak resolution of 8.7% FWHM at -150°C, using a pulse peaking time of 10 μs. When two 3 mm × 3 mm × 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°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.Keywords
This publication has 22 references indexed in Scilit:
- Gamma-ray spectroscopy using small, cooled bismuth germanate scintillators and silicon photodiodesNuclear Instruments and Methods in Physics Research, 1984
- A Stationary Positron Emission Ring Tomograph Using Bgo Detector and Analog ReadoutIEEE Transactions on Nuclear Science, 1984
- Barium fluoride — Inorganic scintillator for subnanosecond timingNuclear Instruments and Methods in Physics Research, 1983
- A Hexagonal Bar Positron Camera: Problems and SolutionsIEEE Transactions on Nuclear Science, 1983
- A Positron Tomograph Employing a One Dimension BGO Scintillation CameraIEEE Transactions on Nuclear Science, 1983
- A quad BGO detector and its timing and positioning discrimination for positron computed tomographyNuclear Instruments and Methods in Physics Research, 1982
- Application of a One Dimensional Scintillation Camera in a Positron Tomographic Ring DetectorIEEE Transactions on Nuclear Science, 1982
- Retardation effects due to the localized application of electric fields on the photocathode of a photomultiplierNuclear Instruments and Methods, 1967
- The localization of the position of light impact on the photocathode of a photomultiplierNuclear Instruments and Methods, 1967
- Study of positronium in water and ice from 22 to -144 °C by annihilation quanta measurementsIl Nuovo Cimento (1869-1876), 1965