Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
IMAGING CHARACTERISTICS OF SCINTIMAMMOGRAPHY USING PARALLEL-HOLE AND PINHOLE COLLIMATORS
Autore:
TSUI BMW; WESSELL DE; ZHAO XD; WANG WT; LEWIS DP; FREY EC;
Indirizzi:
UNIV N CAROLINA,DEPT BIOMED ENGN CHAPEL HILL NC 27599 UNIV N CAROLINA,DEPT RADIOL CHAPEL HILL NC 27599
Titolo Testata:
IEEE transactions on nuclear science
fascicolo: 4, volume: 45, anno: 1998,
parte:, 2
pagine: 2155 - 2161
SICI:
0018-9499(1998)45:4<2155:ICOSUP>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREAST;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
B.M.W. Tsui et al., "IMAGING CHARACTERISTICS OF SCINTIMAMMOGRAPHY USING PARALLEL-HOLE AND PINHOLE COLLIMATORS", IEEE transactions on nuclear science, 45(4), 1998, pp. 2155-2161

Abstract

The purpose of the study is to investigate the imaging characteristics of scintimammography (SM) using parallel-hole (PR) and pinhole (PN) collimators in a clinical setting. Experimental data were acquired from a phantom that models the breast with small lesions using a low energy high resolution (LEHR) PR and a PN collimator. At close distances, the PN collimator provides better spatial resolution and higher detection efficiency than the PR collimator, at the expense of a smaller field-of-view (FOV). Detection of small breast lesions can be further enhanced by noise smoothing, field uniformity correction, scatter subtraction and resolution recovery filtering. Monte Carlo (MC) simulation data were generated from the 3D MCAT phantom that realistically models the Tc-99m sestamibi uptake and attenuation distributions in an averagefemale patient. For both PR and PN collimation, the scatter to primary ratio (S/P) decreases from the base of the breast to the nipple and is higher in the left than right breast due to scatter of photons fromthe heart. Results from the study add to understanding of the imagingcharacteristics of SM using PR and PN collimators and assist in the design of data acquisition and image processing methods to enhance the detection of breast lesions using SM.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 06:14:37