Figure 3.

A 73-year-old female patient presenting with a distal M1 occlusion caused by an RBC-rich thrombus (not shown). In CTA (a), the occlusion site is marked by an arrow. First DSA run (b) demonstrates the occlusion in the same position as in the CTA. Lenticulostriate arteries (LSA, asterisk) are not blocked by the thrombus. (c) The angiographic situation after successful thrombectomy. Infarct pattern in MRI three days later ((d), (e)) demonstrates involvement of the basal ganglia as a clear indirect sign of thrombus migration as the thrombus had blocked the LSA before first presentation in CTA. (f) Time of flight angiography showing the same vascular situation as in last DSA run (c). RBC: red blood cell; CTA: computed tomography angiography; DSA: digital subtraction angiography; MRI: magnetic resonance imaging.