[Problem of spectral attenuated with inversion recovery fat suppression method with respiratory-gated].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 69(1): 92-8, 2013 Jan.
Article
em Ja
| MEDLINE
| ID: mdl-23358343
ABSTRACT
The purpose of this study was to investigate the effect of fat suppression when we use respiratory-gated spectral attenuated with inversion recovery (SPAIR) method with respiratory-gated. We experimented on phantom and in-vivo study using simulated wave of respiratory-gated SPAIR at 1.5 tesla and 3.0 tesla. As a result, the effect of fat suppression becomes wrong with longer intervals of inspiration and expiration by wave of respiratory-gated. The signal intensity also varies with each slice. This result had the same trend on phantom and in-vivo study. The longitudinal magnetization of fat becomes a stable state when SPAIR pulse is shot more than once. However, the SPAIR method with respiratory-gated collect signal before the longitudinal magnetization of fat to be stable state, and fat suppression effect becomes bad, because the inversion time does not match the null point of the fat. Therefore, when we use SPAIR method with respiratory-gated it always causes bad fat suppression.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
Limite:
Adult
/
Humans
Idioma:
Ja
Ano de publicação:
2013
Tipo de documento:
Article