Introduction : Computed tomography (CT) and CT angiography are standard imaging modalities for suspected acute intracerebral hemorrhage due to ruptured intracranial aneurysms. In this clinical setting, several protocols of computed may be implemented. The protocol is limited vessels. extended also include carotid vertebral arteries the aortic arch. Objective: To define role in detection extracr...

Abstract In this study, we investigate the hemodynamics parameters and their impact on aneurysm rupture. The simulations are performed an ideal (benchmark) realistic model for intracranial that appears at anterior communicating artery. geometry was reconstructed from patient-specific cerebral arteries. computational fluid dynamics utilized to hemodynamic such as flow recirculation, wall shear s...

Direct volume visualization has recently gained importance as a tool for the analysis of intracranial aneurysms focused on therapy planning. CT-angiography (CTA) intensities are mapped to color and opacity values by so called one-dimensional transfer functions. In this work, we introduce 3D-visualization of intracranial aneurysms making use of transfer functions based on measured values and gra...

Results from 1,039 combined cervical and transcranial Doppler examinations are reported. Satisfactory transcranial signals were not found in 2.7% of the cases. Compared with angiography, the accuracy of transcranial criteria in assessing collateral flow over the circle of Willis was 94 and 88% for anterior and posterior circulation, respectively. The method also appeared very promising for dete...

Background. Cervicocephalic arterial dissection (CCAD) is rare in the postpartum period. To our knowledge this is the first reported case of postpartum angiopathy (PPA) presenting with ischemic stroke due to intracranial arterial dissection. Case. A 41-year-old woman presented with blurred vision, headache, and generalized seizures 5 days after delivering twins. She was treated with magnesium f...