Cases reported "Convalescence"

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1/2. A case of Japanese encephalitis: CT and MRI findings in acute and convalescent stages.

    We studied the CT and MR images of a patient with Japanese encephalitis. The first symptom was general malaise with high fever. The diagnosis of meningoencephalitis was made by spinal tap and clinical presentation. CT on the third day of illness showed no significant findings. MRI on the fifth day of illness demonstrated that the left thalamus and bilateral putamen were hyperintense on T2-weighted images. On CT one month later, the density in the thalamus and bilateral putamen was normal. MRI two month later showed high signal intensity only in the left thalamus. The patient recovered, but was judged to have dementia according to the simple dementia scale of Hasegawa. Flaccid paralysis was observed during the acute period.
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keywords = putamen
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2/2. magnetic resonance imaging and 11C-N-methylspiperone/positron emission tomography studies in a patient with the interval form of carbon monoxide poisoning.

    Magnetic resonance (MR) and (11)C-N-methylspiperone ((11)C-NMSP)/positron emission tomography (PET) imagings were repeatedly performed in a 50-year-old man with the interval form of carbon monoxide (CO) poisoning. In MR images obtained when delayed neuropsychiatric symptoms developed (two months after poisoning), the inner segments of the bilateral globus pallidus appeared as high signal intensities in the T1-weighted and low signal intensities in the T2-weighted images, suggesting prior focal hemorrhage in these areas. A PET study with (11)C-NMSP performed at that time showed an increase in dopamine D2 receptor binding in the caudate and putamen. Treatment with bromocriptine was very effective and five months after the poisoning, MR and (11)C-NMSP/PET images showed improvement, concomitantly with the disappearance of the neuropsychiatric symptoms.
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keywords = putamen
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