Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Doppler ultrasound of the iliac veins in a patient with right left iliac vein non-thrombotic stenosis. (A) Normal spontaneous blood flow with respiratory changes at the right external iliac vein (EIV). (B) Increased iliac vein velocity at the left EIV.
