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Titolo: Experimental results from the C-SPRINT prototype Compton camera
Autore: LeBlanc, JW; Clinthorne, NH; Hua, CH; Nygard, E; Rogers, WL; Wehe, DK; Weilhammer, P; Wilderman, SJ;
- Indirizzi:
- Univ Michigan, Dept Nucl Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 t Nucl Engn, Ann Arbor, MI 48109 USA Univ Michigan, Div Nucl Med, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 iv Nucl Med, Ann Arbor, MI 48109 USA Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 Biomed Engn, Ann Arbor, MI 48109 USA IDE AS, Oslo, Norway IDE AS Oslo NorwayIDE AS, Oslo, Norway CERN, Geneva, Switzerland CERN Geneva SwitzerlandCERN, Geneva, Switzerland
- Titolo Testata:
- IEEE TRANSACTIONS ON NUCLEAR SCIENCE
fascicolo: 3,
volume: 46,
anno: 1999,
parte:, 1
pagine: 201 - 204
- SICI:
- 0018-9499(199906)46:3<201:ERFTCP>2.0.ZU;2-R
- Fonte:
- ISI
- Lingua:
- ENG
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Engineering, Computing & Technology
- Citazioni:
- 5
- Recensione:
- Indirizzi per estratti:
- Indirizzo: LeBlanc, JW Univ Michigan, Dept Nucl Engn, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 Ann Arbor, MI 48109 USA
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- Citazione:
- J.W. LeBlanc et al., "Experimental results from the C-SPRINT prototype Compton camera", IEEE NUCL S, 46(3), 1999, pp. 201-204
Abstract
A Compton camera is being tested for nuclear medicine applications. Our design uses a single 3 cm by 3 cm silicon pad detector as the first detector system, and SPRINT, an array of position-sensitive sodium iodide modules, as the second detector. Experimental results with a Tc-99m point source showcoincidence energy spectra agreeing with theoretical predictions. The coincidence energy spectra for both silicon and SPRINT detectors correspond to the geometry-determined scattering angle range. Recorded energy falls outside of strict geometric limits because of Doppler broadening and detector energy resolution effects. The summed energy peak in the initial data run fora Tc-99m source has a FWHM energy resolution of 33 keV, primarily due to energy uncertainty in the SPRINT modules. A second data run showed an improvement to 25 keV in summed energy resolution due to careful calibration of, and correction for, significant first and second detector gain nonuniformities. Images generated from the second acquired data set result in a backprojection image resolution of 1.5 cm at a source distance of 10 cm. Analytical and Monte Carlo calculations show a very close agreement of 1.6 cm. Usinga list-mode maximum likelihood EM reconstruction algorithm, the image resolution is improved to 7 mm, although the resolution recovery is at the expense of increased noise in the image.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/05/13 alle ore 12:34:26