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Titolo:
Navigator motion correction of diffusion weighted 3D SSFP imaging
Autore:
Bosak, E; Harvey, PR;
Indirizzi:
Odin Technol Ltd, IL-20698 Yokneam Elite, Israel Odin Technol Ltd YokneamElite Israel IL-20698 698 Yokneam Elite, Israel Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel Hebrew Univ Jerusalem Jerusalem Israel IL-91904 -91904 Jerusalem, Israel Philips Med Syst Nederland BV, NL-5680 DA Best, Netherlands Philips Med Syst Nederland BV Best Netherlands NL-5680 DA t, Netherlands
Titolo Testata:
MAGNETIC RESONANCE MATERIALS IN PHYSICS BIOLOGY AND MEDICINE
fascicolo: 2-3, volume: 12, anno: 2001,
pagine: 167 - 176
SICI:
0968-5243(200105)12:2-3<167:NMCODW>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRAVOXEL INCOHERENT MOTION; STATE FREE PRECESSION; MR; ARTIFACTS; ECHOES;
Keywords:
diffusion MRI; steady state free precession;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Bosak, E 6 Haalia St, IL-30900 Zichron Yaakov, Israel 6 Haalia St ZichronYaakov Israel IL-30900 chron Yaakov, Israel
Citazione:
E. Bosak e P.R. Harvey, "Navigator motion correction of diffusion weighted 3D SSFP imaging", MAGN RES MA, 12(2-3), 2001, pp. 167-176

Abstract

Diffusion weighted (DW) 3D steady state MR (SSFP) head imaging technique using navigator echo's motion correction is presented. This new scheme enables acquisition of DW images even at regions where severe susceptibility is present. Another advantage is the moderate gradient performance requirements. DW imaging methods are sensitive to any kind of motion, thus, most of these methods might suffer from bulk motion artifacts. The common solution toavoid motion artifacts in a 2D DW SSFP acquisition is multi averaging. To avoid the time consuming multi averaging, the new scheme, described here, utilizes navigator echo's motion correction to remove respiratory bulk motion artifacts. At some brain regions, where the motion is governed by blood or CSF pulsation, the navigator motion correction fails. At these regions the correction is an interpolation of corrections from regions where the motion is particularly of the respiratory type. The combination of a 3D sequence with a navigator echo motion correction, enables acquisition of 10 DW slices within a time of 0:50-2:30 min. (C) 2001 Elsevier Science B.V. 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 12:49:19