[Principles of hemodynamics and sonographic techniques for the evaluation of veins of the neck and limbs].
Deep venous thrombosis and venous insufficiency are now easily diagnosed with US imaging. US allows anatomic evaluation of the vessel walls and dynamic evaluation of flow velocities. Knowledge of vascular anatomy and physiology is required to interpret US data. The sensitivity of US for the diagnosis of deep venous thrombosis is up to 95% at the leg level, 98% at the popliteal level, and 100% at the femoral level with a specificity of nearly 100%. Venography is thus rarely performed. The sensitivity for the diagnosis of deep venous thrombosis at the neck level is up to 90%. Follow-up can easily be performed because of the wide availability of US.
Bonnin
Ph
P
Service de Physiologie, Explorations Fonctionnelles, Pr B. Levy, Hôpital Lariboisière, 2 rue A Paré, 75 475 Paris Cedex 10. philippe.bonnin@lrb.ap-hop-paris.fr
Bailliart
O
O
Kedra
A W
AW
D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D035002:Lower Extremity / Q000098:blood supply* / Q000000981:diagnostic imaging; D009333:Neck / Q000098:blood supply* / Q000000981:diagnostic imaging; D018608:Ultrasonography, Doppler; D034941:Upper Extremity / Q000098:blood supply* / Q000000981:diagnostic imaging; D014680:Veins / Q000000981:diagnostic imaging; D014689:Venous Insufficiency / Q000000981:diagnostic imaging / Q000503:physiopathology; D014690:Venous Pressure / Q000502:physiology; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000503:physiopathology