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Figure 1: (a, b) Plain CT brain: Subarachnoid blood predominantly in the interhemispheric fissure and bilateral sylvian cistern. (c) Superior view of 3D CTA: Bilobed aneurysm arising from ACoA projecting superiorly and to the right. (d) High resolution image of C-dominant left A1 segment with hypoplastic right A1 segment

Figure 1: (a, b) Plain CT brain: Subarachnoid blood predominantly in the interhemispheric fissure and bilateral sylvian cistern. (c) Superior view of 3D CTA: Bilobed aneurysm arising from ACoA projecting superiorly and to the right. (d) High resolution image of C-dominant left A1 segment with hypoplastic right A1 segment