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Titolo:
Multislice perfusion and perfusion territory imaging in humans with separate label and image coils
Autore:
Zaharchuk, G; Ledden, PJ; Kwong, KK; Reese, TG; Rosen, BR; Wald, LL;
Indirizzi:
Massachusetts Gen Hosp, NMR Ctr, Dept Radiol, Charlestown, MA 02129 USA Massachusetts Gen Hosp Charlestown MA USA 02129 Charlestown, MA 02129 USA Harvard Univ, MIT, Sch Med, Div Hlth Sci & Technol, Cambridge, MA 02139 USA Harvard Univ Cambridge MA USA 02139 ci & Technol, Cambridge, MA 02139 USA
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 6, volume: 41, anno: 1999,
pagine: 1093 - 1098
SICI:
0740-3194(199906)41:6<1093:MPAPTI>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL BLOOD-FLOW; POSITRON EMISSION TOMOGRAPHY; CEREBROVASCULAR-DISEASE; PARTITION-COEFFICIENT; ARTERIAL WATER; STIMULATION; INVERSION; MRI; METABOLISM; SATURATION;
Keywords:
perfusion; arterial spin labeling; perfusion territory; MRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Wald, LL Massachusetts Gen Hosp, NMR Ctr, Dept Radiol, 149 13th St,Mailcode 149-2301, Charlestown, MA 02129 USA Massachusetts Gen Hosp 149 13th St,Mailcode 149-2301 Charlestown MA USA 02129
Citazione:
G. Zaharchuk et al., "Multislice perfusion and perfusion territory imaging in humans with separate label and image coils", MAGN RES M, 41(6), 1999, pp. 1093-1098

Abstract

An arterial spin labeling technique using separate RF labeling and imagingcoils was used to obtain multislice perfusion images of the human brain at3 T. Continuous RF irradiation at a peak power of 0.3 W was applied to thecarotid arteries to adiabatically invert spins. Labeling was achieved without producing magnetization transfer effects since the B-1 field of the labeling coil did not extend into the imaging region or couple significant power into the imaging coil, Eliminating magnetization transfer allowed the acquisition of multislice perfusion images of arbitrary orientation. Combining surface coil labeling with a reduced RF duty cycle permitted significantly lower SAR than single coil approaches. The technique was also found to allow selective labeling of blood in either carotid, providing an assessment of the artery's perfusion territory. In normal subjects, these territories were well-defined and localized to the ipsilateral hemisphere, (C) 1999 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/09/20 alle ore 17:02:37