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Figure 2: (a) Left vertebral artery injection showed a fusiform left P2–P3 junction aneurysm with a hyperform balloon 4 × 7 mm (Ev3) placed just before the aneurysm in the P2 segment (b and in oblique projection in c). Arrow in (c and d) showing the balloon in PCA, which was inflated to occlude the artery. Left internal carotid artery injection was done with balloon occlusion of left P2 segment (e) showed no obvious collaterals to left PCA territory even on delayed runs (f)

Figure 2: (a) Left vertebral artery injection showed a fusiform left P2–P3 junction aneurysm with a hyperform balloon 4 × 7 mm (Ev3) placed just before the aneurysm in the P2 segment (b and in oblique projection in c). Arrow in (c and d) showing the balloon in PCA, which was inflated to occlude the artery. Left internal carotid artery injection was done with balloon occlusion of left P2 segment (e) showed no obvious collaterals to left PCA territory even on delayed runs (f)