Fig. 2

Images of the first two digital subtraction angiography procedures. A Images of the first digital subtraction angiography on the day of admission, revealing a dissecting aneurysm in the occluded right middle cerebral artery. B Images of the second digital subtraction angiography on the day the trapping of the dissecting aneurysm in the right middle cerebral artery was scheduled, indicating that the dissecting aneurysm had progressed remarkably. C Images of the second digital subtraction angiography, revealing that the dissecting aneurysm located in the right middle cerebral artery was completely trapped. ACA, anterior cerebral artery; AN, aneurysm; ICA, internal cerebral artery; MCA, middle cerebral artery; PCA, posterior cerebral artery