SofiaK wrote:Gee, thanks for the figures L.
Wouldn't the MRV test show the narrowing accurately, however?
Sofia, MRV may not show everything. From what I understand the azygous veins can't be easily seen on MRV, the only test that can truly get a picture of what is going on with azygous is the venogram, which is the same as when you actually get treated.
Each of the tests show different things. MRV can give a picture of the outside of the veins. Possibly showing stenosis. Doppler ultrasound can show what is happening with the blood flow. The can see the blood flow, see how much is refluxing and they even listen to it. There is a very different sound when there is reflux. Venogram, they can get a picture of what is happening inside the veins. Sometimes if they don't already have an MRV and Doppler, if a doc just goes in and does venogram, simply because the catheter has gone in, in a few cases, they might miss an issue because they've pushed the catheter through, say a faulty valve. (which has been written about on this thread).
So, because of this, it isn't that one test is better than another, they can learn different things from the different tests...
Hope this helps...