Figure 4From: Prehospital stroke diagnostics based on neurological examination and transcranial ultrasoundFlow diagram showing the diagnostic imaging pathway used to diagnose ischemic stroke. It includes the diagnostic accuracy for M1 and ICA pathology. US, ultrasound of intra- and extracranial arteries; TCCS, transcranial color-coded sonography; M1, middle cerebral artery mainstem; ICA, internal carotid artery.Back to article page