A5041021768- Intracranial Aneurysms: Treatment and Complications
- Vascular Malformations Diagnosis and Treatment
- Pituitary Gland Disorders and Treatments
- EEG and Brain-Computer Interfaces
- Traumatic Brain Injury and Neurovascular Disturbances
- Functional Brain Connectivity Studies
- Particle accelerators and beam dynamics
- Moyamoya disease diagnosis and treatment
- Meningioma and schwannoma management
- Cerebrospinal fluid and hydrocephalus
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Cerebrovascular and Carotid Artery Diseases
- Glioma Diagnosis and Treatment
- Particle Accelerators and Free-Electron Lasers
- Spinal Dysraphism and Malformations
- Intracerebral and Subarachnoid Hemorrhage Research
- Metal Alloys Wear and Properties
- Advanced MRI Techniques and Applications
- Neurosurgical Procedures and Complications
- Epilepsy research and treatment
- Semiconductor materials and devices
- Neural dynamics and brain function
- Neurological Complications and Syndromes
- Advanced materials and composites
High Energy Accelerator Research Organization
2013-2024
Daido Steel (Japan)
2024
Tohoku University
2005-2023
The Graduate University for Advanced Studies, SOKENDAI
2023
Mitsubishi Heavy Industries (Japan)
2016-2021
Osaka University
2009-2019
Kanazawa Institute of Technology
2010-2018
Tokyo Institute of Technology
2011-2017
Michigan State University
2017
National Kyushu Medical Center
2014
Background and Purpose— About one half of those who develop adult-onset moyamoya disease experience intracranial hemorrhage. Despite the extremely high frequency rebleeding attacks poor prognosis, measures to prevent have not been established. The purpose this study is determine whether extracranial–intracranial bypass can reduce incidence improve patient prognosis. Methods— This was a multicentered, prospective, randomized, controlled trial conducted by 22 institutes in Japan. Adult...
Background and Purpose— The objectives of the present study were to estimate an annual number patients with moyamoya disease in Japan describe clinicoepidemiological features disease. Methods— consisted 2 questionnaire surveys, which distributed randomly selected departments neurosurgery, internal medicine, neurology, cerebrovascular pediatrics hospitals throughout Japan. first survey inquired about treated 2003, second requested additional detailed information each patient identified...
Although the development of a noninvasive MR examination has increased opportunity to identify asymptomatic patients with moyamoya disease who have experienced no stroke episodes, their clinical features are still unclear. This was first multicenter, nation-wide survey focused on in Japan and designed clarify features.A database collected from 12 participating hospitals between 2003 2006. In total, 40 were enrolled this historical prospective cohort study. Of these, 6 underwent surgical...
Background and Purpose— The primary results of the Japan Adult Moyamoya Trial revealed statistically marginal superiority bypass surgery over medical treatment alone in preventing rebleeding moyamoya disease. purpose this analysis is to test prespecified subgroup hypothesis that natural course surgical effects vary depending on hemorrhagic site at onset. Methods— site, classified as either anterior or posterior, was only stratifying variable for randomization. Statistical analyses were...
<i>Background:</i> Magnetic resonance angiography (MRA) has been acknowledged as a noninvasive diagnostic modality for moyamoya disease. However, in terms of staging disease, conventional is still the gold standard. Therefore, purpose this study was to establish MRA grades disease an alternative angiography. <i>Methods:</i> Twenty-two patients (44 sides) with diagnosed by were evaluated during past 5 years. scores assigned based on severity occlusive changes internal...
A retrospective analysis was conducted of 10 patients (three women and seven men) who were treated for spinal dural arteriovenous shunts (AVSs) located at the craniocervical junction. This performed to evaluate characteristics this unusual location in contrast with those more common thoracic lumbar AVSs.Seven presented subarachnoid hemorrhage (SAH) one slowly progressive quadriparesis dyspnea due myelopathy. The other two cases detected incidentally included a transverse-sigmoid AVS...
The initial cortical response of the trigeminal somatosensory evoked magnetic fields was measured for electrical stimulation lower lip in eleven subjects. stimulus frequency 0.7 Hz and intensity nine times sensory threshold. contralateral detected 20 hemispheres at a latency 14.6+/-1.3 ms named N15m. equivalent current dipole N15m localized posterior bank central sulcus with anterior-superior orientation, inferior to N20m median nerve stimulation.
To investigate the clinical usefulness of magnetoencephalography (MEG) as a guide to surgical treatment temporal lobe epilepsy (TLE).Preoperative spike localization by MEG was compared with seizure outcome and postoperative at 12 months after resective surgery in 16 patients TLE. Spike classified into anterior (AT) non-AT 11 without neocortical lesion treated lobectomy (ATL); lobar five lesionectomy (n = 3) or medial resection 2).All AT became free surgery. Among six localization, two free,...
This study reviews aneurysms of the proximal segment (A1) anterior cerebral artery in 38 patients (23 men and 15 women) their surgical, angiographic, clinical management. Thirty-seven were saccular one was fusiform. The incidence A1 among a total 4295 aneurysm cases treated 0.88%. Multiple occurred 17 (44.7%) cases; 10 (58.8%), there bleeding from aneurysm. classified into five categories according to mode origin relation segment: 21 cases, originated junction perforating artery; eight,...
Direct operations were performed on 206 patients with aneurysms of the anterior communicating artery (ACoA) using a bifrontal craniotomy and an interhemispheric approach. A total 44 (21.4%) these had vascular anomalies in vicinity ACoA; included median corpus callosum (MACC) 27 cases (13.1%), duplication ACoA 20 (9.7%), A1 segment cerebral one (0.5%). retrospective study angiograms indicated that diagnosis or was not possible; only 11 (41%) MACC's easily identified, while eight (30%) could...
Object. Craniopharyngiomas frequently grow from remnants of the Rathke pouch, which is located on cisternal surface hypothalamic region. These lesions can also extend elsewhere in infundibulohypophyseal axis. The aim this study was to establish usefulness frontobasal approach made through a relatively small craniotomy window for removal tumors protruding sellar—suprasellar region into third and basal cistern. Methods. Thirty-one patients who were surgically treated craniopharyngiomas...
We conducted a nationwide study over one year period (July 1, 1995-June 30, 1996) to elucidate the incidence, clinical and radiological features, outcome, factors influencing poor outcome in intracranial arterial dissection.The subjects of were 357 patients with dissection reported from 208 neurosurgical institutes. Those divided into two groups: hemorrhagic group 206 (58%) presenting subarachnoid hemorrhage, nonhemorrhagic 151 (42%) manifesting brain ischemia, headache or, asymptomatic. In...
Introduction - To clarify the relationship between visual disturbances caused by pituitary adenomas and degree of chiasmal compression, MRI (1.5T) findings were assessed two dimensionally. Material methods 50 cases 17 control studied. The position optic chiasm was measured distance from line frontal base posterior clinoid process on sagittal T1 weighted image, upper surface bilateral internal carotid artery coronal image. Result Visual appeared when displaced to more than 8 mm above...