Chronological changes in nonhaemorrhagic brain infarcts with short T1 in the cerebellum and basal ganglia.
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.
Komiyama
M
M
Department of Neurosurgery, Osaka City General Hospital, Miyakojima, Osaka, Japan. komiyama@japan-mail.com
Nakajima
H
H
Nishikawa
M
M
Yasui
T
T
D000328:Adult; D000368:Aged; D001479:Basal Ganglia / Q000473:pathology; D001480:Basal Ganglia Diseases / Q000175:diagnosis*; D002526:Cerebellar Diseases / Q000175:diagnosis*; D002531:Cerebellum / Q000473:pathology; D002544:Cerebral Infarction / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged