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AJNR - American Journal of Neuroradiology

Published ahead of print on May 22, 2008
doi: 10.3174/ajnr.A1120

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Association between Cerebral Microbleeds on T2*-Weighted MR Images and Recurrent Hemorrhagic Stroke in Patients Treated with Warfarin following Ischemic Stroke

H. Ueno^a, H. Naka^b, T. Ohshita^a, K. Kondo^a, E. Nomura^a, T. Ohtsuki^a, T. Kohriyama^a, S. Wakabayashi^c and M. Matsumoto^a

^a Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical Sciences, Hiroshima, Japan
^b Department of Neurology, Suiseikai Kajikawa Hospital, Hiroshima, Japan
^c Department of Neurosurgery, Suiseikai Kajikawa Hospital, Hiroshima, Japan

View larger version (97K): [in this window] [in a new window]   Fig 1. MR images of a patient with intracerebral hemorrhage in the left thalamus. T2*-weighted images reveal multiple foci of signal-intensity loss (microbleeds) in the brain stem, thalamus, and cerebral hemispheres.

View larger version (64K): [in this window] [in a new window]   Fig 2. MR images of a patient with recurrent cardioembolic infarction. A, DWI shows hyperintense signal-intensity alterations in the right frontal lobe, indicating acute cerebral infarction. B and C, T2*-weighted images do not show cerebral microbleeds.