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Detection of acute thalamo‐mesencephalic infarction: diffusion abnormality precedes T2 hyperintensity
Author(s) -
Weise J.,
Bähr M.,
StrayleBatra M.,
Küker W.
Publication year - 2003
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1034/j.1600-0404.2003.00094.x
Subject(s) - hyperintensity , infarction , medicine , abnormality , magnetic resonance imaging , diffusion mri , cerebral infarction , cardiology , posterior cerebral artery , radiology , ischemia , middle cerebral artery , myocardial infarction , psychiatry
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.