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Figure 3: (a) Vertebral artery injection showing the P2–P3 junction aneurysm balloon occlusion test was done (b showing balloon in P2 segment), following which aneurysm coiling along with parent vessel occlusion was done (c and d with c; arrow pointing toward coils in parent vessel). (e and f) showing postcoiling vertebral artery injection showing no filling of the aneurysm and no collateral filling of the distal posterior cerebral artery (PCA) territory. Left internal carotid artery injection (g) even on delayed runs showed no collaterals to PCA territory

Figure 3: (a) Vertebral artery injection showing the P2–P3 junction aneurysm balloon occlusion test was done (b showing balloon in P2 segment), following which aneurysm coiling along with parent vessel occlusion was done (c and d with c; arrow pointing toward coils in parent vessel). (e and f) showing postcoiling vertebral artery injection showing no filling of the aneurysm and no collateral filling of the distal posterior cerebral artery (PCA) territory. Left internal carotid artery injection (g) even on delayed runs showed no collaterals to PCA territory