 Since 2007, we have conducted a clinical study to objective detection of intracranial aneurysms in our routine diagnostic work-up of intracranial aneurysms by our neuroradiologists using a standard procedure with 3D-TOF-MRA with VR at 3T. The investigators want to establish the quality data to prospectively compare 3D-TOF-MRA with VR at 3T vs 3D-RDSA in the diagnosis of intracranial aneurysms in a largest cohort of patients and test it accuracy in screening for suspected patients 