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Figure 2: A 64-year old man with acute SAH, as seen on the computed tomography (CT) scan axial section (a). Selective injection of the right vertebral artery seen on a three-dimensional rotational angiography (b). The lateral projection image of VA on the DSA (c) showing an irregular fusiform dilatation involving the intradural segment of the right VA distal to the right PICA. The left VA is dominant (d). Coil embolization and parent artery trapping was done for the involved dissected segment distal to the PICA origin, achieving complete aneurysmal occlusion and a patent PICA filling from the ipsilateral VA as seen on frontal and lateral projections (e and f). Contralateral VA is dominant and taking care of the posterior circulation (g). Diagrammatic representation of the same (h), and the presence of dense coil mass within the aneurysmal sac (i)

Figure 2: A 64-year old man with acute SAH, as seen on the computed tomography (CT) scan axial section (a). Selective injection of the right vertebral artery seen on a three-dimensional rotational angiography (b). The lateral projection image of VA on the DSA (c) showing an irregular fusiform dilatation involving the intradural segment of the right VA distal to the right PICA. The left VA is dominant (d). Coil embolization and parent artery trapping was done for the involved dissected segment distal to the PICA origin, achieving complete aneurysmal occlusion and a patent PICA filling from the ipsilateral VA as seen on frontal and lateral projections (e and f). Contralateral VA is dominant and taking care of the posterior circulation (g). Diagrammatic representation of the same (h), and the presence of dense coil mass within the aneurysmal sac (i)