A5090977279- Neurological disorders and treatments
- Acute Ischemic Stroke Management
- Intracranial Aneurysms: Treatment and Complications
- Moyamoya disease diagnosis and treatment
- Epilepsy research and treatment
- EEG and Brain-Computer Interfaces
- Cerebrovascular and Carotid Artery Diseases
- Parkinson's Disease Mechanisms and Treatments
- Traumatic Brain Injury and Neurovascular Disturbances
- Advanced Neuroimaging Techniques and Applications
- Neurological Complications and Syndromes
- Functional Brain Connectivity Studies
- Meningioma and schwannoma management
- Neuroscience and Neural Engineering
- Genetic Neurodegenerative Diseases
- Glioma Diagnosis and Treatment
- Vascular Malformations Diagnosis and Treatment
- Glaucoma and retinal disorders
- Connective tissue disorders research
- Neurobiology of Language and Bilingualism
- Advanced MRI Techniques and Applications
- Transcranial Magnetic Stimulation Studies
- Vagus Nerve Stimulation Research
- Vascular Procedures and Complications
- Gaze Tracking and Assistive Technology
Sapporo Medical University
2017-2023
Saitama Medical University
2021
Oxford University Press (United Kingdom)
2020
Sapporo Medical University Hospital
2019
Hokkaido University
2017
Hakodate National Hospital
2016
Enlarged perivascular spaces (EPVS) are often observed with magnetic resonance imaging in patients small vessel disease. However, the risk factors, radiological features, and clinical relevance of EPVS moyamoya disease poorly understood. The purpose this study was to evaluate EPVS, factors many pathophysiology adult One hundred cerebral hemispheres 50 were examined. control group consisted age/sex-matched without ischemic numbers at level centrum semiovale per hemisphere compared between...
This study aimed to enable the automatic detection of hippocampus and diagnose mesial temporal lobe epilepsy (MTLE) with as epileptogenic area using artificial intelligence (AI). We compared diagnostic accuracies AI neurosurgical physicians for MTLE area.In this study, we used an program MTLE. The image sets were processed a code written in Python 3.7.4. analyzed Open Computer Vision 4.5.1. deep learning model, which was fine-tuned VGG16 consisted several layers. board-certified...
OBJECTIVE Medullary streaks detected on fluid-attenuated inversion recovery (FLAIR) imaging have been considered to be reflected ischemic regions in pediatric moyamoya disease. The purpose of this study was evaluate these medullary both clinically and radiologically discuss associated pathophysiological concerns. METHODS authors retrospectively reviewed data from 14 consecutive patients with disease treated between April 2009 June 2016. Clinical radiological features postoperative changes...
Middle cerebral artery (MCA) occlusion was examined with basi-parallel anatomical scanning (BPAS) using three-dimensional fast imaging employing steady-state acquisition (3D-FIESTA), and 3D-FIESTA magnetic resonance angiography (MRA) fusion images were created. We expected that an incidence of hemorrhagic complications due to vessel perforations would be decreased by obtaining vascular information beyond the thus acute endovascular revascularization could performed such techniques. for MCA...
Awake craniotomy has been widely performed in patients with glioma eloquent areas to minimize postoperative brain dysfunction. However, neurological examination awake is sometimes problematic due communication difficulties during the intraoperative period. We evaluated preoperative predictors of these for glioma. In all, 136 who underwent at our institution between January 2012 and 2020 were retrospectively evaluated. Patients divided into two groups (appropriately group inappropriately...
【目的】腎不全の右頚部内頚動脈高度狭窄の患者に，ほぼ造影剤を使用することなく，頚動脈ステント留置術（carotid artery stenting; CAS）を施行した1 例を報告する．【方法】大腿動脈に9Fr OPTIMO を挿入，頚椎MRI- 頚動脈MRA fusion image を参考にして総頚動脈に留置，エコーガイド下にPercuSurge GuardWire を外頚動脈に留置した．総頚動脈および外頚動脈のバルーンを拡張し順行性血流を遮断し，少量の希釈造影剤で撮影後，直ちに吸引回収した．Intra-vascular ultrasoundgraphy（IVUS）で狭窄病変長，内頚動脈および総頚動脈径を計測し，前拡張，エコーガイド下にステント留置，後拡張を行った．IVUS で拡張を確認して手技を終了した．【結果】術後経過問題なく，5 日後に退院した．Follow up の頚動脈エコー上ステント開存は良好であった．【結論】造影剤使用不可能症例でも，頚動脈エコー，頚椎MRI- image，IVUS を利用してCAS を安全に施行でき，本法は有用と考えられた．
Objectives: Meandering flow void around the splenium, which can be recognized on conventional T2-weighted images, implicates collateral in splenial artery patients with moyamoya disease. In this report, curves of voids splenium (SFVs) were evaluated disease, and their diagnostic value pathophysiology verified.Methods: A total 65 consecutive disease included analysis. The number SFV was counted each side. numbers compared those control group. clinical features large analyzed.Results: mean...
This study investigated the networks originating from frontal eye fields (FEFs) using electric cortical stimulation and diffusion tensor imaging (DTI). Seven patients with intractable focal epilepsy, in which FEFs were identified by electrical stimulation, enrolled this study. Electric at 50 Hz was applied to electrodes for functional mapping. DTI used identify subcortical fibers two regions of interests (ROIs) FEF contralateral paramedian pontine reticular formation (PPRF). found superior...
Several structures including subthalamic nucleus (STN), the caudal zona incerta (cZI), prelemniscal radiation (Raprl), and thalamic ventral intermediate (Vim) have been reported to be useful for improving symptoms of Parkinson's disease (PD). However, effect each target is still unclear. Therefore, we investigated structure's effects adverse using a directional lead implanted in posterior STN adjacent cZI Raprl two patients with tremor-dominant PD. In Case 1, maximal reduction tremor was...
Thrombectomy has been the gold standard therapy for anterior circulation occlusion; however, studies regarding thrombectomy in posterior are lacking. In this study, we compared efficiency of acute large vessel occlusion between and at a single institution.
The aim of the present study was to evaluate motor area mapping using functional magnetic resonance imaging (fMRI) compared with electrical cortical stimulation (ECS). Motor fMRI and ECS were retrospectively in seven patients refractory epilepsy which primary (M1) areas identified by between 2012 2019. A right finger tapping task used for mapping. Blood oxygen level-dependent activation detected left precentral gyrus (PreCG)/postcentral (PostCG) along "hand knob" central sulcus all patients....
The appearance of edematous lesions in the subacute phase is a rare complication following neuroendovascular therapy. Effective management these remains unclear. In this report, case with progressive after therapy was described, and clinical features therapeutic strategies were discussed.A 54-year-old female large, right cavernous internal carotid artery aneurysm treated flow diverter. Left hemiparesis developed 15 days procedure, multiple areas prior catheter procedures revealed on...
Ischemic tolerance has been evaluated by the balloon test occlusion (BTO) for cerebral aneurysms and tumors that might require parent artery during surgery. However, because of its invasiveness, a non-invasive evaluation method is needed. In this study, we assessed possibility virtual using computational fluid dynamics (CFD) as alternative to BTO evaluating ischemic tolerance.Twenty-one patients who underwent were included in study. Virtual was performed CFD analysis, flow rate (FR) wall...
Mechanical thrombectomy using a standard device has been effective for acute cerebral large-vessel occlusions, particularly those due to cardiogenic embolism. However, evidence with underlying atherosclerotic lesions is lacking. In this study, we evaluated the predictive factors, treatment details, and outcomes of occlusions in patients who underwent mechanical thrombectomy.We retrospectively analyzed consecutive at our institution between August 2014 May 2021. Predictive factors were...
Objective: We report two cases of unruptured intracranial aneurysms treated with the coil embolization using T-stenting technique.Case Presentations: Case 1 was a 49-year-old woman wide-neck basilar tip aneurysm (10.8 mm × 9.8 8.9 mm) riding on origin bilateral posterior cerebral arteries. 2 an 84-year-old left internal carotid artery-posterior communicating artery (16.8 13.5 12.6 and ipsilateral (Pcom) branched from dome aneurysm. Both were technique without any neurological...