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Titolo:
Analytic determination of pinhole collimator sensitivity with penetration
Autore:
Metzler, SD; Bowsher, JE; Smith, MF; Jaszczak, RJ;
Indirizzi:
Duke Univ, Med Ctr, Div Nucl Med, Durham, NC 27710 USA Duke Univ Durham NC USA 27710 Med Ctr, Div Nucl Med, Durham, NC 27710 USA Thomas Jefferson Univ, Natl Accelerator Facil, Newport News, VA 23606 USA Thomas Jefferson Univ Newport News VA USA 23606 ewport News, VA 23606 USA
Titolo Testata:
IEEE TRANSACTIONS ON MEDICAL IMAGING
fascicolo: 8, volume: 20, anno: 2001,
pagine: 730 - 741
SICI:
0278-0062(200108)20:8<730:ADOPCS>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
EMISSION COMPUTED-TOMOGRAPHY; ULTRA-HIGH-RESOLUTION; SPECT; PHANTOM;
Keywords:
collimator; pinhole; sensitivity; single photon emission computed tomography; SPECT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Metzler, SD Duke Univ, Med Ctr, Div Nucl Med, POB 3949, Durham, NC 27710 USA Duke Univ POB 3949 Durham NC USA 27710 9, Durham, NC 27710 USA
Citazione:
S.D. Metzler et al., "Analytic determination of pinhole collimator sensitivity with penetration", IEEE MED IM, 20(8), 2001, pp. 730-741

Abstract

Pinhole collimators are widely used to image small organs and animals. Thesensitivity of knife-edge pinhole collimators has been previously estimated using an "effective diameter" formulation and experimentally described using a sin(infinity) theta fit, where theta is the angle between the line segment from the center of the aperture to the photon source and its projection onto the plane of the aperture. An analytic form of the sensitivity of the pinhole collimator is derived in this paper. A numerical formula for predicting the sin(infinity) theta form of the sensitivity is calculated from the analytic form. Experimental data are compared with the theoretical estimate and the sin(infinity) theta prediction. The agreement is excellent.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 20:11:29