title: Non-invasive techniques for the recording of vertebral artery flow and their limitations.
mesh_terms: D001783:Blood Flow Velocity; D002339:Carotid Arteries / Q000000981:diagnostic imaging / Q000502:physiology / Q000503:physiopathology; D003951:Diagnostic Errors; D004301:Doppler Effect; D005069:Evaluation Studies as Topic; D006801:Humans; D008722:Methods; D011859:Radiography; D013349:Subclavian Steal Syndrome / Q000175:diagnosis; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography; D014652:Vascular Diseases / Q000175:diagnosis; D014711:Vertebral Artery / Q000000981:diagnostic imaging / Q000502:physiology* / Q000503:physiopathology