Patient 4 imaging result. The image shows multiple small to moderately sized hypodensities within the bilateral supratentorial and infratentorial compartments likely representing multifocal acute-subacute infarcts. Linear hyperdensity within the anterior interhemispheric fissure, which may represent endoluminal thrombus within an anterior cerebral artery, is also seen. Sulcal effacement and mass effect within regions of likely acute-subacute infarcts are observed. Mass effect and partial effacement upon the fourth ventricle can be seen