van der Steen WE, et al. - Researchers investigated whether there was an association between quantified location-specific blood volumes and delayed cerebral ischemia after aneurysmal subarachnoid hemorrhage (SAH). Between January 2009 and December 2011, clinical and radiologic data were obtained retrospectively from consecutive patients with aneurysmal SAH with available CT scans within 24 hours after ictus admitted to two academic centers. The findings suggested that the cisternal blood volume had a stronger relationship with delayed cerebral ischemia than the blood volumes at other locations in the brain in patients with aneurysmal subarachnoid hemorrhage.