1. Pseudo-subarachnoid hemorrhage: a rare neuroimaging pitfall;Al-Yamany M;Can J Neuro Sci,1999
2. Pseudo-subarachnoid hemorrhage: a potential imaging pitfall associated with diffuse cerebral edema;Given CA 2nd;AJNR Am J Neuroradiol,2003
3. Acute purulent leptomeningitis mimicking subarachnoid hemorrhage on CT;Mendelsohn DB;J Comput Assist Tomogr,1994
4. Increased density of tentorium and falx: a false positive CT sign of subarachnoid hemorrhage;Spiegel SM;Can Assoc Radiol J,1986
5. The false falx sign;Osborn AG;Radiology,1980