mri of neck and brain vessels

abnormalities accuracy anatomical and aneurism angio angiogram angiogramm angiography area arrow arrows arteries atherosclerosis atherosclerotic basis black blockage blood brain carotid cerebral circumflex colorful contrast detection diagnostic digital exam flow gadolinium headache hemorrage injection intravenous invasive magnetic malformation medical mri narrowing neurosyrgery obstruction pain pathology picture projection radiology red resonance sagital stenosis stricture stroke symptoms technologie test vessels yellow