Akihiro Oikawa

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Background. We developed a new simple therapeutic method for the treatment of chronic subdural hematoma (CSDH) without irrigation and drainage. This method is characterized by replacement of the hematoma with oxygen. Methods. Seventy patients (seventy-eight sides) with CSDH were treated with this method from May 1994 to October 2002. For the complete(More)
A 21-year-old woman, who had undergone foramen magnum decompression for her symptomatic Chiari malformation (Type 1) 7 years before, presented with recurrence of the symptoms. Neuroradiological examinations demonstrated regeneration of the foramen magnum that was caused by new bone formation, as confirmed at the second surgery. Neurological improvement was(More)
OBJECTIVE AND IMPORTANCE We present a case of schwannoma attached to the tentorium. CLINICAL PRESENTATION A 41-year-old woman without evidence of neurofibromatosis presented with a 3-month history of headache, positional vertigo, and truncal ataxia. Magnetic resonance imaging revealed an extra-axial cystic mass lesion in the left anteromedial cerebellar(More)
Previous studies have indicated that ErbB receptors for neuregulins play an important role in cardiac development and muscle spindle formation during embryogenesis; however, little is known about their functions in adulthood. Recent reports indicate that breast cancer therapy with humanized monoclonal ErbB2 antibody induces cardiomyopathy, suggesting that(More)
BACKGROUND Diaphragm pacing with electrical stimulation of the phrenic nerve is an established treatment for central hypoventilation syndrome. The device, however, is not readily available, at least in Japan. We used the spinal cord stimulator for pain control for phrenic nerve stimulation. The purpose of this study is to evaluate the efficacy and(More)
Case report: An 8-year-old boy who was treated for hydrocephalus with lumboperitoneal shunting presented with extreme night bradycardia. Results and conclusion: The night bradycardia disappeared after shunt revision, suggesting that the probable cause was secondary to long-lasting increased intracranial pressure (ICP). Long-lasting increased ICP is known to(More)
The line-of-sight (LOS) detection system has various applications, such as in the field of health and welfare, human-computer interaction, and safety and security. In this paper, we demonstrate a LOS detection system which has micro-fabricated transparent optical sensors on eyeglasses and its applications for information communication technologies (ICT). We(More)
A 55-year-old man with traumatic acute subdural hematoma (SDH) was managed nonsurgically because of having isolated mild headache that resolved within a week. However, the patient developed an acute onset of amnestic aphasia 12 days post-trauma. Although the SDH itself did not increase in volume, remarkable swelling of the ipsilateral cerebral hemisphere(More)
This study proposes a concept of remote recycling and prototyped the remote operation system. Then, the paper tried to examine whether the remote recycling is technically feasible. In the experiment, material compositions of the separated parts through remote operation were measured, and also operation capability was checked. And then, the results were(More)
A case of acute subdural haematoma caused by ruptured arteriovenous malformation is reported. At surgery, there was no association with intracerebral haematoma or definite subarachnoid haemorrhage. The mechanism of acute subdural haematoma in the present case was considered to be rupture of an arteriolized bridging vein drained by arteriovenous malformation.