Fig. 1

Diffusion Weighted Imaging (a) and magnetic resonance angiography (b, c) at 24 h after stroke onset, Digital subtraction angiography at 6 days after stroke onset (d, e, f, g) and at 3 months after stroke onset (h, i). a Diffusion Weighted Imaging showed moderate-sized infarcts involving the left frontal-parietal cortex; b Anteroposterior image of magnetic resonance angiography; c Oblique image of magnetic resonance angiography; d Aortic arch angiogram; e Anteroposterior view of left common carotid artery angiography; f Anteroposterior view of right vertebral artery angiography; g Lateral view of right vertebral artery angiography; h Lateral view of left carotid angiography; i Lateral view of right vertebral artery angiography. 1: the left internal carotid artery; 2: the tentorial artery; 3: the aberrant right subclavian artery; 4: the right vertebral artery originated from the right common carotid artery; 5: the left vertebral artery originated from aortic arch; 6: the formation of carotid dissection; 7: the lateral pontine artery; 8: the posterior communicating artery; 9: the internal carotid artery aneurysm