Evaluation of a position sensitive avalanche photodiode for PET

Autor:	Ronald Grazioso, Adrian Ivan, K. S. Shah, Chang Lyong Kim, Richard Farrell, Scott Stephen Zelakiewicz, David Leo McDaniel, Kent C. Burr, Jaroslaw Glodo, James Walter Leblanc, Alexander Ganin
Rok vydání:	2003
Předmět:	Physics Nuclear and High Energy Physics business.industry Detector Resolution (electron density) Reflector (antenna) Scintillator Avalanche photodiode Low noise Optics Nuclear Energy and Engineering Position (vector) Gamma ray detectors Electrical and Electronic Engineering business
Zdroj:	IEEE Transactions on Nuclear Science. 50:792-796
ISSN:	1558-1578 0018-9499
DOI:	10.1109/tns.2003.815317
Popis:	A gamma ray detector for PET, consisting of an array of mixed lutetium oxyorthosilicate (MLS) scintillator crystals coupled to a position sensitive avalanche photodiode (PSAPD), was evaluated. The scintillator array was constructed from individual MLS crystals with dimensions of 1.5 mm /spl times/ 1.5 mm /spl times/ 15 mm. The assembled 7 /spl times/ 7 array, including intercrystal reflector material, had a pitch of 1.79 mm. The low noise, high gain PSAPD had dimensions of 14 mm /spl times/ 14 mm. Peaks associated with each of the 49 scintillator crystals were readily identifiable in flood histograms, and most of the crystals demonstrated energy resolution in the range of 15% to 20% at 511 keV. Measurements of the timing of the PSAPD in coincidence with a fast-scintillator/PMT detector indicated a timing resolution of approximately 4 ns. The operating characteristics and design attributes, such as compactness and reduced readout channel requirements, of the PSAPD make it attractive for high resolution PET applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c292103847700e744033f7259c66fc54 https://doi.org/10.1109/tns.2003.815317 Zobrazit plný text záznamu