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PURPOSE To assess the efficacy of metal stents for the treatment of different forms and sizes of carotid aneurysms. METHODS A total of 14 experimentally constructed aneurysms in dogs were treated with transfemorally placed balloon-expandable tantalum and self-expanding nitinol stents. RESULTS In 10 cases, stenting produced either immediate complete(More)
In a retrospective analysis, the authors studied the pial and dural blood supplies in 74 intracranial meningiomas and quantified their associated peritumoral brain edema (PTBE). The extent and localization of pial blush in relation to the total tumor volume were determined angiographically. The amount of edema and tumor size were calculated using(More)
PURPOSE To evaluate the efficacy of preoperative meningioma devascularization with small polyvinyl alcohol (PVA) particles. METHODS In 34 patients with intracranial meningiomas, CT, MR, 1H MR spectroscopy, MR volumetric measurements, intraoperative ultrasound, and histopathologic findings were used to compare the efficacy of two embolization techniques:(More)
We treated 14 consecutive patients for acute central retinal artery occlusion. Eleven were treated with urokinase introduced through a microcatheter in the proximal segment of the ophthalmic artery. Fibrinolysis was succeeded by heparinization for two to three days. Instead of urokinase, we used tissue plasminogen activator in three patients. Vision(More)
We have treated 23 patients with central retinal artery occlusion by intra-arterial fibrinolysis, a method already in use for treatment of thromboembolic occlusion of the cerebral arteries. Fibrinolysis was carried out through a microcatheter placed in the origin of the ophthalmic artery. When ophthalmic artery cannot be catheterised, treatment can be(More)
OBJECT Results of previous in vitro and in vivo experimental studies have suggested that placement of a porous stent within the parent artery across the aneurysm neck may hemodynamically uncouple the aneurysm from the parent vessel, leading to thrombosis of the aneurysm. For complex wide-necked aneurysms, a stent may also aid packing of the aneurysm with(More)
BACKGROUND AND PURPOSE The purpose of this study was to investigate the periprocedural morbidity, mortality, and long-term clinical and angiographic follow-up using stent-assisted coiling and stenting alone for treatment of cranial fusiform dissecting and atherosclerotic aneurysms. METHODS The Institutional Review Board approved the study. A retrospective(More)
OBJECTIVE We investigate the predictive value of cerebrospinal fluid (CSF) flow void on outcome after shunting in a prospective series of patients with idiopathic normal pressure hydrocephalus (NPH). METHODS The degree and extension of CSF flow void were examined on T2-weighted magnetic resonance imaging scans of 37 elderly patients with idiopathic NPH(More)
BACKGROUND AND PURPOSE The potential for successful treatment of intracranial aneurysms by flow diversion is gradually being recognized in the clinical setting; however, the devices currently available (stents) are not designed for flow diversion. We evaluate the long-term response of an appropriately designed flow diversion device in producing thrombotic(More)
Unraveling and fracture of electrolytically detachable coils (Guglielmi detachable coils) may occur during treatment of intracerebral aneurysms. Retrieval of the detached coil is difficult using existing snare technology, and the intraluminal coil may cause parent vessel thrombosis or distal embolization. We report a case of unraveling and fracture of a(More)