Hidetsugu Maekawa

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Middle meningeal artery aneurysm associated with meningioma is extremely rare, and only two cases have previously been reported. In our case, a 72-year-old woman with convexity meningioma underwent preoperative cerebral angiography, which revealed a flow-related aneurysm on the middle meningeal artery. Embolization of the aneurysm was performed with(More)
Aneurysmal subarachnoid hemorrhage is the most devastating form of stroke. Many pathological mechanisms ensue after cerebral aneurysm rupture, including hydrocephalus, apoptosis of endothelial cells and neurons, cerebral edema, loss of blood-brain barrier, abnormal cerebral autoregulation, microthrombosis, cortical spreading depolarization and macrovascular(More)
BACKGROUND The basilar bifurcation aneurysm (BBA) is still considered to be one of the most challenging aneurysms for micro- and endovascular surgery. Classic surgical approaches, such as subtemporal, lateral supraorbital (LSO), and modified presigmoid, are still reliable and effective. OBJECTIVE To analyze the clinical and radiological factors that(More)
OBJECTIVE The presigmoid approach can be used to treat vertebrobasilar artery aneurysms when circumstances require more operative exposure. High morbidity and mortality in these cases have been reported. In this study, we describe our modified presigmoid approach for vertebrobasilar artery aneurysms and our clinical results. METHODS This series includes(More)
A state traversal algorithm based on control theory and its application to sequential ATPG is presented. In the algorithm, next states are evaluated by an objective function representing "unlikeliness" to reach each of the previously traversed states. Experimental results show that many states are efficiently traversed and that our proposed ATPG can achieve(More)
Estrogen deficiency is thought to be responsible for the higher frequency of aneurysmal subarachnoid hemorrhage in post- than premenopausal women. Estrogen replacement therapy appears to reduce this risk but is associated with significant side effects. We tested our hypothesis that bazedoxifene, a clinically used selective estrogen receptor (ER) modulator(More)
INTRODUCTION Epidemiological studies suggest that postmenopausal estrogen deficiency is responsible for the increased risk of aneurysmal subarachnoid hemorrhage, while menopausal hormone therapy is protective against cerebral aneurysms. These findings indicate the critical role of estrogen in the pathophysiology of cerebral aneurysm. AREAS COVERED Here,(More)
A 67-year-old woman was admitted with aneurysmal subarachnoid haemorrhage and a 12-lead ECG showed ST segment elevation. Transthoracic echocardiography confirmed akinesis of the left ventricular mid-apical segment, with an ejection fraction of 26%, features characteristic of takotsubo cardiomyopathy. Five days later, we identified thrombus in the apex of(More)