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BACKGROUND An intracranial lesion of intravascular papillary endothelial hyperplasia (IPEH) is extremely rare and often difficult to resect completely. We describe a case in which a lesion at the superior orbital fissure was successfully treated by postoperative radiosurgery. CASE DESCRIPTION A 41-year-old woman presented with progressive left abducens(More)
OBJECT The Wada test is had been the most reliable for determining speech dominance. Drugs injected into the internal carotid artery, however, may be heterogeneously distributed as the result of asymmetry of the anterior cerebral arteries and the presence of a fetal-type posterior cerebral artery. Variations in drug distribution could occasionally alter(More)
OBJECT In endovascular coil embolization for an intracranial aneurysm, the excessive pressure created during coil insertion into an aneurysm can cause a catastrophic rupture or dislodge a microcatheter tip from the aneurysm dome, resulting in insufficient embolization. Such undue mechanical pressure can only be subjectively detected by the subtle tactile(More)
Two patients with symptomatic intrasellar arachnoid cyst were successfully treated. A 67-year-old female with a cyst 20 mm in diameter developed headache and visual disturbance. She was treated by transsphenoidal surgery. A 59-year-old male with a cyst measuring 35 x 30 x 50 mm causing headache, visual disturbance, and deterioration of consciousness was(More)
BACKGROUND A carotid artery aneurysm associated with vascular Behçet disease is extremely rare and often difficult to treat. In this article, we explore a definitive therapeutic strategy for pseudoaneurysm with vascular Behçet disease. CASE DESCRIPTION A 56-year-old man presented with swelling and a pulsatile subcutaneous mass of the left neck over a(More)
We present a measurement of the standard model CP violation parameter sin2 phi(1) based on a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is fully reconstructed as a J/psi K(S), psi(2S)K(S), chi(c1)K(S), eta(c)K(S), J/psi K(L), or J/psi K(*0) decay(More)
This report presents the results of studies that investigate the physics reach at a Super B factory, an asymmetric-energy e + e − collider with a design luminosity of 5 × 10 35 cm −2 s −1 , which is around 40 times as large as the peak luminosity achieved by the KEKB collider. The studies focus on flavor physics and CP violation measurements that could be(More)
We have measured the performance, especially the timing properties, of micro-channel plate photo-multiplier tubes (MCP-PMTs) by irradiating with single photons with/without a magnetic field. A time resolution of s ¼ 30–35 ps was obtained for single photons under 1:5 T: With an MCP-PMT, a small time-of-flight counter, by means of Cherenkov light radiation(More)