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Improvement of post-gadolinium contrast with magnetization transfer.

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.

journal_name

Eur Radiol

journal_title

European radiology

authors

Huot P,Dousset V,Hatier F,Degreze P,Carlier P,Caillé JM

doi

10.1007/pl00006889

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

174-7

eissn

0938-7994

issn

1432-1084

journal_volume

7 Suppl 5

pub_type

杂志文章

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