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Titolo:
MRI guided segmentation and quantification of SPECT images of the basal ganglia: a phantom study
Autore:
Koole, M; Laere, KV; de Walle, RV; Vandenberghe, S; Bouwens, L; Lemahieu, I; Dierckx, RA;
Indirizzi:
State Univ Ghent, ELIS, MEDISIP, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 IS, MEDISIP, B-9000 Ghent, Belgium
Titolo Testata:
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS
fascicolo: 2, volume: 25, anno: 2001,
pagine: 165 - 172
SICI:
0895-6111(200103/04)25:2<165:MGSAQO>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
ITERATIVE RECONSTRUCTION; PET;
Keywords:
single-photon emission computed tomography image; magnetic resonance; image matching; partial-volume correction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Koole, M State Univ Ghent, ELIS, MEDISIP, St Pietersnieuwstr 41, B-9000 Ghent, Belgium State Univ Ghent St Pietersnieuwstr 41 Ghent Belgium B-9000 gium
Citazione:
M. Koole et al., "MRI guided segmentation and quantification of SPECT images of the basal ganglia: a phantom study", COMP MED IM, 25(2), 2001, pp. 165-172

Abstract

Due to the limited resolution of single-photon emission computed tomography (SPECT) imaging devices, tissue interfaces are not well defined in the reconstructed image, even though resolution recovery techniques may be used during reconstruction. Therefore, segmentation of a particular region and quantification of the tracer uptake in that region is critical due to spillover effects, when based on the SPECT image only. In this study, we present two methods for quantification of tracer uptake in a SPECT image, defined bya matched high resolution structural magnetic resonance image. We show preliminary results of both techniques, when applied for quantifying regional uptake in the different compartments of a phantom simulating the basal ganglia. These results indicate that the quantification method, which takes into account the blurring by the SPECT imaging device, promises to be perform better in the presence of background activity. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 13:10:38