Naoyuki Arai

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OBJECTIVE Minor head trauma is common in children. Although most cases are nonsignificant, minor head trauma can lead to preventable intracranial injuries. The aim of this study was to identify clinical predictors of intracranial injuries in infants with minor head trauma. METHODS Between 2006 and 2013, we retrospectively enrolled infants <11 months old(More)
We aimed to determine the sensitivity of CT perfusion (CTP) for the diagnosis of cerebral infarction in the acute stage. We retrospectively reviewed patients with ischemic stroke who underwent brain CTP on arrival and MRI-diffusion weighted image (DWI) after hospitalization between October 2008 and October 2011. Final diagnosis was made from MRI-DWI(More)
Among 238 patients with bilateral trigeminal neuralgia(TN)who visited our hospital between April 2007 and June 2014, 5(2%)were surgically treated by microvascular decompression(MVD). The initial symptom was on the right side in four and on both sides in one patient. Intervals between the initial and second onset on the other side(left)were two months, and(More)
A 76-year-old woman presented at our hospital complaining of loss of consciousness, dysarthria, and upper extremity paresis. Head CT showed no remarkable findings. 3D CT angiography (CTA) and CT perfusion (CTP) revealed acute aortic dissection (AAD) involving the innominate artery and decreased cerebral blood flow in the right cerebral hemisphere, although(More)
A 59-year-old man presented with right trigeminal neuralgia of the second branch, which had been treated with carbamazepine. The pain could not be controlled adequately because of side effects. CT and MRI revealed a 2-cm lesion in the right cerebellopontine angle. Retrosigmoid lateral suboccipital craniectomy was performed, and a soft yellowish mass was(More)
Ocular ischemic syndrome occurs when ocular circulation becomes impaired owing to various causes, leading to disturbances in the visual function. It ultimately progresses to neovascular glaucoma and loss of sight. Therefore, the early diagnosis and treatment of patients with ocular ischemic syndrome has a major effect on their visual prognosis. Herein, we(More)
Epidermoid rarely appears in the cavernous sinus. We encountered a 41-year-old man with left abducens nerve palsy. A round-shaped, low-density lesion on CT was located lateral to the left cavernous sinus with a compressed and thinned lateral wall of the sphenoid sinus. We could not identify cranial nerves in the cavernous sinus, which was found to be packed(More)
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