The application of an ultrasound technique to the study of the proximal veins of the lower extremity.
D005268:Femoral Vein / Q000502:physiology / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D007084:Iliac Vein; D007866:Leg / Q000098:blood supply*; D008722:Methods; D012119:Respiration; D014463:Ultrasonography; D014652:Vascular Diseases / Q000175:diagnosis*