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AJNR - American Journal of Neuroradiology

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Frequency of Asymptomatic Microbleeds on T2*-Weighted MR Images of Patients with Recurrent Stroke: Association with Combination of Stroke Subtypes and Leukoaraiosis

Hiromitsu Naka^a, Eiichi Nomura^a, Shinichi Wakabayashi^b, Hiroshi Kajikawa^b, Tatsuo Kohriyama^c, Yasuyo Mimori^c, Shigenobu Nakamura^a and Masayasu Matsumoto^c

^a Department of Neurology, Suiseikai Kajikawa Hospital, Japan
^b Department of Neurosurgery, Suiseikai Kajikawa Hospital, Japan
^c Department of Clinical Neuroscience and Therapeutics, Division of Integrated Medical Science, Programs for Biomedical Research, Hiroshima University, Graduate School of Biomedical Sciences, Hiroshima, Japan

View larger version (152K): [in a new window]   FIG 1. MR images of a 75-year-old patient with intracerebral hemorrhage in the right parietal lobe 8 years after the occurrence of intracerebral hemorrhage in the left putamen. A and B, T2*-weighted gradient-echo images (800/26; flip angle, 20 degrees) reveal multiple foci of signal intensity loss (microbleeds) in the brain stem, cerebellum, basal ganglia, and cerebral hemispheres. In addition, old intracerebral hemorrhage is evident in the left putamen. C and D, T2-weighted spin-echo images (4500/112) show the site of old intracerebral hemorrhage in the left putamen, but microbleeds are not evident.