Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
A comparative study of acquisition schemes for diffusion tensor imaging using MRI
Autore:
Papadakis, NG; Xing, D; Huang, CLH; Hall, LD; Carpenter, TA;
Indirizzi:
Univ,Cambridge, Sch Clin Med, Herchel Smith Lab Med Chem, Cambridge CB2 2PZ Univ Cambridge Cambridge England CB2 2PZ Lab Med Chem, Cambridge CB2 2PZ Univ Cambridge, Physiol Lab, Dept Physiol, Cambridge CB2 3EG, England UnivCambridge Cambridge England CB2 3EG iol, Cambridge CB2 3EG, England
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE
fascicolo: 1, volume: 137, anno: 1999,
pagine: 67 - 82
SICI:
1090-7807(199903)137:1<67:ACSOAS>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRAVOXEL INCOHERENT MOTION; MAGNETIC-RESONANCE; HUMAN BRAIN; ARTIFACTS; PERFUSION; ECHOES;
Keywords:
magnetic resonance imaging; diffusion; tensor; anisotropy; noise; optimization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Carpenter, TA UnivRobinsonge, Sch Clin Med, Herchel Smith Lab Med Chem, Univ Forvie Site, Univ Cambridge Univ Forvie Site,Robinson Way Cambridge England CB2 2PZ
Citazione:
N.G. Papadakis et al., "A comparative study of acquisition schemes for diffusion tensor imaging using MRI", J MAGN RES, 137(1), 1999, pp. 67-82

Abstract

This study has investigated the effects of the selection of the diffusion-weighted (DW) gradient directions on the precision of a diffusion tensor imaging (DTI) experiment. The theoretical analysis provided a quantitative framework in which the noise performance of DTI schemes could be assessed objectively and for the development of novel DTI schemes, which employ multiple DW gradient directions. This generic framework was first applied to the examination of two commonly used DTI schemes, which employed 6 DW gradient directions and hitherto were used indiscriminately under the sole condition of noncollinearity. It was then used to design and assess a novel 12-DW-gradient-direction DTI protocol, which employed the same total number of DW acquisitions as the two conventional schemes (12), This theoretical investigation was then corroborated using rigorous simulation and DTI experiments onboth an isotropic phantom and a healthy human brain. Both the theoretical and the experimental analysis demonstrated that the two conventional schemes showed a significantly different noise performance and that use of the new multiple-DW-gradient-direction scheme clearly improved the precision of the DTI measurements. (C) 1999 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:55:06