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Case 1. Case 1. Axial NCCT demonstrates bilateral subdural collections, slightly hyperattenuating to CSF (white arrows). The collections are hyperintense.

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Presentation on theme: "Case 1. Case 1. Axial NCCT demonstrates bilateral subdural collections, slightly hyperattenuating to CSF (white arrows). The collections are hyperintense."— Presentation transcript:

1 Case 1. Case 1. Axial NCCT demonstrates bilateral subdural collections, slightly hyperattenuating to CSF (white arrows). The collections are hyperintense to CSF on FLAIR and more subtly hyperintense on T1WI (not shown). On SWAN, the fluid is hyperintense to CSF. Neomembranes with hemosiderin staining are present bilaterally within the subdural compartment on SWAN and T2WI (black arrows). Hemosiderin staining along the right-sided neomembrane shown is quite subtle. On T2WI, the subdural fluid is hyperintense to the adjacent subarachnoid CSF (angled black arrows) and isointense to ventricular CSF (not shown). J.A. Cramer et al. AJNR Am J Neuroradiol 2016;37: ©2016 by American Society of Neuroradiology

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