title: Non-invasive blood flow studies for evaluating the arterial and venous systems of the legs and the extracranial carotid system in the neck.
mesh_terms: D001783:Blood Flow Velocity; D002342:Carotid Artery, External / Q000000981:diagnostic imaging; D004301:Doppler Effect; D005069:Evaluation Studies as Topic; D006801:Humans; D007866:Leg / Q000098:blood supply*; D009333:Neck / Q000098:blood supply*; D010690:Phlebography / Q000379:methods; D010992:Plethysmography, Impedance / Q000379:methods