Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Comparison of diffusion anisotropy measurements in combination with the flair-technique
Autore:
Hirsch, JG; Bock, M; Essig, M; Schad, LR;
Indirizzi:
Deutschie,ebsforschungszentrum, Forsch Schwerpunkt Radiol Diagnost & Therap Deutsch Krebsforschungszentrum Heidelberg Germany D-69120 gnost & Therap
Titolo Testata:
MAGNETIC RESONANCE IMAGING
fascicolo: 5, volume: 17, anno: 1999,
pagine: 705 - 716
SICI:
0730-725X(199906)17:5<705:CODAMI>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRAVOXEL INCOHERENT MOTION; MYELIN FIBER ORIENTATION; WATER DIFFUSION; HUMAN BRAIN; WHITE MATTER; NERVOUS-SYSTEM; SPIN-ECHO; MR-IMAGES; SEQUENCES; PERFUSION;
Keywords:
EPI; FLAIR; brain; apparent diffusion coefficient; anisotropy; tumors;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Schad, LR Deutschie,ebsforschungszentrum, Forsch Schwerpunkt Radiol Diagnost & Therap Deutsch Krebsforschungszentrum Neuenheimer Feld 280 HeidelbergGermany D-69120
Citazione:
J.G. Hirsch et al., "Comparison of diffusion anisotropy measurements in combination with the flair-technique", MAGN RES IM, 17(5), 1999, pp. 705-716

Abstract

Fluid-attenuated inversion recovery (FLAIR) technique offers an effective tool to diminish partial-volume averaging effects from cerebrospinal (CSF) signal with in vivo magnetic resonance imaging. CSF-suppressed and unsuppressed direction-dependent diffusion-weighted (DW) images are obtained with aDW spin-echo EPI sequence in a single acquisition scheme. Comparison of unsuppressed and CSF-suppressed apparent diffusion coefficient (ADC) maps yields consistent values for brain tissue in volunteers when no partial-volumeeffects are expected, but differs considerably at borders of parenchyma toventricles and sulci. From theory and phantom studies, a corrected anisotropy index is introduced considering differences of statistical fit errors. Anisotropy of white matter is observed in normal brain of volunteers. Anisotropy index maps reveal destruction of fiber tracts in pathologic areas, Results of a preliminary study on 12 patients with intra-axial tumors indicate an improved delineation of tumor boundaries of FLAIR ADC maps against unsuppressed acquisition. (C) 1999 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 08:50:40