Ultrasound of normal femoral vessels

Transverse ultrasound images of the right groin demonstrate the normal vascular orientation, with the common femoral vein (blue arrow) medial to the common femoral artery (red arrow). Nearby muscles are also seen, including the sartorius (S), rectus femoris (RF), and pectineus (P).
(A) Image of the right groin without compression shows the patent common femoral artery and vein.
(B) Image of the right groin with compression shows collapse of the common femoral vein while the artery remains patent.