A, Axial unenhanced CT shows diffuse symmetric subarachnoid hemorrhage

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Presentation transcript:

A, Axial unenhanced CT shows diffuse symmetric subarachnoid hemorrhage. A, Axial unenhanced CT shows diffuse symmetric subarachnoid hemorrhage. B, Questionable hyperattenuation at the level of the sella turcica is difficult to interpret given adjacent streak artifact. C, Frontal view of right internal carotid angiogram shows MCA bifurcation and paraclinoid aneurysms. D, 3D right ICA angiogram in lateral view reveals the paraclinoid aneurysm arising distal to the ophthalmic artery but pointing inferiorly below the plane of the ophthalmic artery. M. Ribeiro et al. AJNR Am J Neuroradiol 2008;29:980-982 ©2008 by American Society of Neuroradiology