Simultaneous multislice imaging with slice-multiplexed RF pulses.
Magn Reson Med
; 54(4): 755-60, 2005 Oct.
Article
em En
| MEDLINE
| ID: mdl-16155891
ABSTRACT
A method for simultaneous multislice imaging is presented that uses a multislice RF pulse that imparts a different linear phase profile to each slice. During readout, slices are unaliased by using extra slice-select gradient lobes, which rephase and dephase individual slices one at a time. Compared to other simultaneous slice methods, this method avoids distortion by slice-select gradients, and does not require extra views or additional hardware. However, because one echo per slice is required, the method requires a longer read period. This can cause non-ideal rephasing of the individual slices due to susceptibility gradients, which manifests itself as crosstalk between slices. There is also a concomitant increase in the minimum TR of the sequence. The method is demonstrated with phantom and in vivo images using gradient-echo and spin-echo versions.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Encéfalo
/
Imageamento por Ressonância Magnética
/
Interpretação de Imagem Assistida por Computador
/
Aumento da Imagem
/
Anatomia Transversal
/
Imageamento Tridimensional
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
Limite:
Humans
Idioma:
En
Revista:
Magn Reson Med
Ano de publicação:
2005
Tipo de documento:
Article