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123I-Iomazenil Single-Photon Emission Computed Tomography Imaging in a Patient with Mild Traumatic Subdural Hematoma Accompanied by Delayed Transient Aphasia Jun YOSHIDA 1 , Nobukazu KOMORIBAYASHI 1,2 , Kohki OIKAWA 1,3 , Shinichi OHMAMA 1,3 , Daigo KOJIMA 1 , Yasuyoshi SHIMADA 1 , Kuniaki OGASAWARA 1 1Department of Neurosurgery, Iwate Medical University School of Medicine 2Iwate Prefectural Advanced Critical Care and Emergency Center, Iwate Medical University School of Medicine 3Division of Critical Care Medicine, Department of Critical Care, Disaster and General Medicine, Iwate Medical University School of Medicine Keyword: subdural hematoma , non-convulsive seizure , 123I-iomazenil , single-photon emission computed tomography , diaschisis pp.1081-1086
Published Date 2018/12/10
DOI https://doi.org/10.11477/mf.1436203872
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 Early and late images of 123I-iomazenil(IMZ)single-photon emission computed tomography(SPECT)reflect distributions of cerebral blood flow and those of cortical benzodiazepine receptor binding potential, respectively. Crossed cerebellar diaschisis reflects left-to-right asymmetry of metabolism in the cerebral hemispheres.

 We present a case of a 67-year-old woman who developed transient aphasia 3 days after the onset of a mild acute subdural hematoma. Computed tomography scan and magnetic resonance imaging during aphasia did not show enlargement of the hematoma or any new lesions. Electroencephalography did not show any abnormalities. Early images of 123I-IMZ SPECT 3 days after the onset of aphasia revealed a decrease in radioactivity in the right cerebellar hemisphere relative to that in the left cerebellar hemisphere. Late images of the same 123I-IMZ SPECT displayed a decrease in radioactivity in the left cerebral hemisphere relative to that in the right cerebral hemisphere. Twenty-four days later, the aphasia disappeared and the left-to-right asymmetries of radioactivity in the cerebellar and cerebral hemispheres on the early and late 123I-IMZ SPECT images also resolved.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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