I have a question about using duplex US to identify and localize
congenital arterio-venous malformations. I have had a few cases through
the years, and have not really had much luck with tracking the little
devils down. I have been able to predict a couple of intracranial cases
based on the differences between the flow signals in the two carotid
arteries. But in the extremities, as on the child I saw today with
hugely distended veins and even small venous ulcerations on his left
leg, they have remained elusive. I looked at the entire arterial system
for low resistance or turbulence; I looked at the entire venous system
for arterialized flow, pulsation, etc. And found nothing. No
difference compared to the same site on the unaffected right leg. I
looked at iliacs and all the way down the leg. I tried to just look for
abnormal color flow. I looked with velocity scale set high. Set low.
Gain up, down etc. Nothing.
Have others had more success than I have? I feel like I must be
Thanks! Norma V.