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Titolo:
Separation of arteries and veins in 3D MR angiography using correlation analysis
Autore:
Bock, M; Schoenberg, SO; Floemer, F; Schad, LR;
Indirizzi:
Deutsch Krebsforschungszentrum, FS Radiol Diagnost & Therapie, D-69120 Heidelberg, Germany Deutsch Krebsforschungszentrum Heidelberg Germany D-69120 lberg, Germany
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 3, volume: 43, anno: 2000,
pagine: 481 - 487
SICI:
0740-3194(200003)43:3<481:SOAAVI>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Keywords:
multiphase contrast-enhanced 3D MR angiography; lung imaging; image postprocessing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Bock, M Deutsch Krebsforschungszentrum, FS Radiol Diagnost & Therapie, NeuenheimerFeld 280, D-69120 Heidelberg, Germany Deutsch Krebsforschungszentrum Neuenheimer Feld 280 Heidelberg Germany D-69120
Citazione:
M. Bock et al., "Separation of arteries and veins in 3D MR angiography using correlation analysis", MAGN RES M, 43(3), 2000, pp. 481-487

Abstract

Multiphase contrast-enhanced 3D MR angiography (MRA) data sets allow the separate visualization of the arterial and venous pulmonary vasculature. However, due to short arterial-to-venous bolus transit times in the lung, the generation of pure venograms without arterial overlay is difficult. To suppress arterial signal in venograms, early arterial phase data are typically subtracted from peak venous phase images. In this study, a correlation algorithm is used to postprocess the multiphase 3D MRA data sets. The cross-correlation between a measured arterial or venous reference function and the local signal-time course is computed which highlights image locations with asimilar signal-time curve as the reference function and suppresses constant signal, Conventional maximum intensity projections (MIP) are generated from the arterial and venous correlation maps. In a study with five volunteers, an increase in SNR by a factor of 2.1 (1.8) of arterial (venous) correlation MIP images over subtraction MIP images was observed. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 12:56:57