Fig. 6From: Imaging investigation of cervicocranial artery dissection by using high resolution magnetic resonance VWI and MRA: qualitative and quantitative analysis at different stagesHR-MRI images of two patients. a-d HRMR-VWI taken at admission of a 55-year-old male patient who presented with repeated headache for 3 years. A thrombotic aneurysm of the V4 segment of the right vertebral artery, compressing the brain stem (mass effect) was observed. e-i HR-MRI taken during physical examination of a 43-year-old female patient with a history of hypertension showed a thrombotic aneurysm of the V4 segment of the right vertebral artery, and the compressed vessel was slightly narrowedBack to article page