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Titolo:
STATISTICAL DISTRIBUTION OF FACTORS AND FACTOR IMAGES IN FACTOR-ANALYSIS OF MEDICAL IMAGE SEQUENCES
Autore:
BUVAT I; BENALI H; DIPAOLA R;
Indirizzi:
CHU PITIE SALPETRIERE,INSERM,U494,91 BLVD HOP F-75634 PARIS 13 FRANCE
Titolo Testata:
Physics in medicine and biology
fascicolo: 6, volume: 43, anno: 1998,
pagine: 1695 - 1711
SICI:
0031-9155(1998)43:6<1695:SDOFAF>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAMIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
I. Buvat et al., "STATISTICAL DISTRIBUTION OF FACTORS AND FACTOR IMAGES IN FACTOR-ANALYSIS OF MEDICAL IMAGE SEQUENCES", Physics in medicine and biology, 43(6), 1998, pp. 1695-1711

Abstract

From a time or energy image sequence, factor analysis of medical image sequences (FAMIS) estimates factors, representing kinetics or spectra in a given physiological compartment, and associated factor images, showing the compartments corresponding to each curve. In this paper, we show that the statistical properties of factor images and associatedfactors can be determined using a well known result from elementary probability theory. Numerical experiments are conducted to demonstrate that the variance observed in factor images can be predicted when the statistical properties of the original data are known. It is shown howthese theoretical results can be used to relax the non-negativity constraints during FAMIS oblique analysis and to improve the quantitativeinterpretation of the factor images by associating a confidence interval with each pixel value.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 19:37:47