Improvement of post-gadolinium contrast with magnetization transfer.
Eur Radiol
; 7 Suppl 5: 174-7, 1997.
Article
em En
| MEDLINE
| ID: mdl-9370540
ABSTRACT
Magnetization transfer (MT) provides post-gadolinium contrast improvement through decreasing the tissue signal. Our study had two aims:
to analyse the effect of MT qualitatively and quantitatively in 13 patients, and to analyse in vitro the competition between two relaxation phenomena, dipole-dipole which is characteristic of MT and proton - electron which is characteristic of gadolinium. Contrast between lesion and white matter improved from 20.6 % before MT to 65.1 % after MT, enabling new lesions to be detected in two patients. The improvement was due mainly to the proton - electron effect of gadolinium rather than the dipole relaxation of MT. These results are in agreement with those in the literature. The existence of spontaneous high-signal induced by MT in the absence of gadolinium indicates that it is preferable to perform an MT sequence before and after administration of gadolinium.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Compostos Organometálicos
/
Astrocitoma
/
Encéfalo
/
Neoplasias Encefálicas
/
Imageamento por Ressonância Magnética
/
Aumento da Imagem
/
Meios de Contraste
/
Compostos Heterocíclicos
/
Esclerose Múltipla
Limite:
Adolescent
/
Adult
/
Aged
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Aged80
/
Child
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Child, preschool
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Eur Radiol
Assunto da revista:
RADIOLOGIA
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
França