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Acta Neurol Scand. 2003 Jul;108(1):52-4.

Detection of acute thalamo-mesencephalic infarction: diffusion abnormality precedes T2 hyperintensity.

Author information

1
Department of Neurology, University of Göttingen Medical School, Göttingen, Germany. jweise@gwdg.de

Abstract

OBJECTIVE:

To examine the time course of signal changes in diffusion-weighted magnetic resonance imaging (DW-MRI) and T2-weighted MRI in a case of cerebral infarction in the posterior circulation territory.

MATERIALS AND METHODS:

Diffusion- and T2-weighted MRI and comparison of signal changes in these sequences at 4 h, 1 day and 4 days after the onset of clinical symptoms caused by acute thalamo-mesencephalic infarction.

RESULTS:

Four hours after the onset of symptoms, signal changes in DW-MRI revealed an infarction in the territory of the posterior perforating thalamic artery, whereas no signal changes were detected in T2-weighted MRI. In follow-up MRI 1 and 4 days after infarction, however, a marked hyperintensity matching the location of the diffusion deficit could be identified in T2 images.

CONCLUSION:

Signal changes in DW-MRI precede T2 hyperintensity after infarction in the posterior circulation territory after hemispheric infarction.

PMID:
12807394
[Indexed for MEDLINE]

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