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Figure 5: (a) NCCT head showing hyperdensity in pre-pontine interpeduncular cistern (a and b), on T2W MRI (c) and T1W (d); it appear variegated appearance suggestive of partially thrombosed aneurysm. CT angiography (e) showing large aneurysm from posterior communicating artery (PCOM) and P2 junction. DSA 3D runs (f and g) showing a large aneurysm filling from PCOM with no communication from vertebral injection (fetal PCOM). Coiling of aneurysm with flowdivertor placed in the PCOM and posterior cerebral artery (PCA) (h). Postcoiling (i) no filling of aneurysm with patent PCOM and distal PCA

Figure 5: (a) NCCT head showing hyperdensity in pre-pontine interpeduncular cistern (a and b), on T2W MRI (c) and T1W (d); it appear variegated appearance suggestive of partially thrombosed aneurysm. CT angiography (e) showing large aneurysm from posterior communicating artery (PCOM) and P2 junction. DSA 3D runs (f and g) showing a large aneurysm filling from PCOM with no communication from vertebral injection (fetal PCOM). Coiling of aneurysm with flowdivertor placed in the PCOM and posterior cerebral artery (PCA) (h). Postcoiling (i) no filling of aneurysm with patent PCOM and distal PCA