Figure 5
From: Prehospital stroke diagnostics based on neurological examination and transcranial ultrasound

Distal MCA mainstem occlusion in a patient with global aphasia and right-sided hemiparesis. (a) Prehospital TCCS showed a resistance profile only at the origin of the left MCA, (b) whereas flow in the contralateral MCA was unremarkable. At the hospital, (c) a CT scan displayed a dense artery sign (arrow), and (d) a CTA showed occlusion of the MCA (arrow).