Chronological changes in nonhaemorrhagic brain Infarcts with short T1 in the cerebellum and basal ganglia |
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Authors: | M Komiyama H Nakajima M Nishikawa T Yasui |
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Institution: | (1) Department of Neurosurgery, Osaka City General Hospital, 2–13–22, Miyakojima-Hondouri, Miyakojima, Osaka 534–0021, Japan e-mail: komiyama@japan-mail.com Tel.: + 81-6-69 29 12 21 Fax: + 81-6-69 29 10 91, JP |
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Abstract: | Our purpose was to investigate nonhaemorrhagic infarcts with a short T1 in the cerebellum and basal ganglia. We carried out
repeat MRI on 12 patients with infarcts in the cerebellum or basal ganglia with a short T1. Cerebellar cortical lesions showed
high signal on T1-weighted spin-echo images beginning at 2 weeks, which became prominent from 3 weeks to 2 months, and persisted
for as long as 14 months after the ictus. The basal ganglia lesions demonstrated slightly high signal from a week after the
ictus, which became more intense thereafter. Signal intensity began to fade gradually after 2 months. High signal could be
seen at the periphery until 5 months, and then disappeared, while low or isointense signal, seen in the central portion from
day 20, persisted thereafter.
Received: 1 February 1999 Accepted: 13 September 1999 |
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Keywords: | Infarcts brain Basal ganglia Cerebellum Magnetic resonance imaging T1 shortening |
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