Nonaneurysmal “Pseudo-Subarachnoid Hemorrhage” Computed Tomography Patterns: Challenges in an Acute Decision-Making Heuristics

Acute aneurysmal subarachnoid hemorrhage (SAH) is a medical and neurosurgical emergency from ruptured brain aneurysm. Aneurysmal SAH is identified on brain computed tomography (CT) as increased density of basal cisterns and subarachnoid spaces from acute blood products. Aneurysmal SAH-like pattern on CT appears as an optical illusion effect of hypodense brain parenchyma and/or hyperdense surrounding cerebral cisterns and blood vessels termed as “pseudo-subarachnoid hemorrhage” (pseudo-SAH).

Source: Journal of Stroke and Cerebrovascular Diseases - June 5, 2018 Category: Neurology Authors: Tasneem F. Hasan, Walter Duarte, Oluwaseun O. Akinduro, Eric D. Goldstein, Rebecca Hurst, Neil Haranhalli, David A. Miller, Robert E. Wharen, Rabih G. Tawk, William D. Freeman Source Type: research