It's 3 AM and EMS brings in a patient with altered mental status found down in the local park. His glucose and vital signs are normal and there is no clear etiology on his exam.  As part of your work up, you order a CT brain to evaluate for a neurologic case.  Unfortunately, teleradiology has been taking up to 90 minutes to give an interpretation on your CT's. As the patient is taken off the scanning table, you quickly peruse his CT and wonder. . . will I be able to identify an emergent diagnosis before my friendly "neighborhood" radiologist?