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Titolo:
ADVANTAGE OF FAN-BEAM COLLIMATORS FOR CONTRAST RECOVERY OF HYPERFIXATION IN CLINICAL SPECT
Autore:
VERA P; DEDREUILLE O; BENDRIEM B; GARDIN I; STIEVENART JL; MENARD JF; PARE C; BOURGUIGNON M; BOK B; SYROTA A;
Indirizzi:
HOP BEAUJON,DEPT NUCL MED CLICHY FRANCE CEA,SERV HOSP FREDERIC JOLIOT F-91406 ORSAY FRANCE HOP CHARLES NICOLLE,DEPT BIOPHYS ROUEN FRANCE SOPHA MED VIS BUC FRANCE
Titolo Testata:
IEEE transactions on nuclear science
fascicolo: 1, volume: 44, anno: 1997,
pagine: 83 - 89
SICI:
0018-9499(1997)44:1<83:AOFCFC>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
EMISSION COMPUTED-TOMOGRAPHY; SPATIAL-RESOLUTION; CONE-BEAM; QUANTIFICATION; SIMULATION;
Keywords:
FAN BEAM COLLIMATORS; HYPERFIXATION DETECTABILITY; SPECT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
P. Vera et al., "ADVANTAGE OF FAN-BEAM COLLIMATORS FOR CONTRAST RECOVERY OF HYPERFIXATION IN CLINICAL SPECT", IEEE transactions on nuclear science, 44(1), 1997, pp. 83-89

Abstract

The influence of the collimator on the contrast recovery of hyperfixation was studied using a dual-headed single photon emission computed tomography (SPECT) system with standard clinical acquisition parameters. Three parallel collimator sets and two fan beam collimator sets weretested with a Jaszczak phantom. The six spheres of the phantom were filled with Tc-99m, and four background levels were progressively obtained by adding radioactivity to the cylinder of the phantom, providing four hyperfixation levels. The effects of angular sampling and reconstruction filters have been tested. The statistical analysis was performed with analysis of variance (ANOVA). This study demonstrates the advantage of ultra-high resolution fan beam collimators for contrast recovery of hyperfixation with SPECT when using 64 projections over 360 degrees, in particular when the contrast is low. We also demonstrate thatfan beam collimators permit smaller size hyperfixation detection.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 04:37:49