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Neurology. 2002 Aug 13;59(3):335-41.

Normalization of T2 signal abnormalities in hemispheric white matter with liver transplant.

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  • 1Magnetic Resonance Unit (IDI), Department of Radiology, Hospital Universitari Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035 Barcelona, Spain. alex.rovira@idi-cat.org

Abstract

OBJECTIVE:

To determine whether edema can be assessed by MRI using T2-weighted signal intensity of hemispheric white matter in cirrhotic patients.

METHODS:

Fast-FLAIR and magnetization transfer images were obtained before (24) and after (11) liver transplantation. T2-weighted abnormalities on baseline scans and their time-course changes were analyzed and compared with MT ratios (MTR).

RESULTS:

Fast-FLAIR baseline images showed faint to substantial, bilateral, symmetric increased signal intensity along the hemispheric white matter in or around the corticospinal tract in 23/24 patients. After liver transplantation the signal abnormalities gradually recovered. This gradual decrease in signal intensity correlated with an increase in MTR values.

CONCLUSION:

Asymptomatic symmetric high-signal intensity in the hemispheric white matter on fast-FLAIR MR images is present in cirrhosis. Normalization of this finding after successful liver transplantation and its correlation with MTR values suggest that this signal abnormality reflects mild edema.

PMID:
12177365
[PubMed - indexed for MEDLINE]
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