Does anyone use the North american Method for diameter reductions in Carotid
arteries at their Lab, this is also known as the "distal" stenosis method.
This method is acheived by measuring the diameter of the site in the carotid
that is most stenosed, and then going distally in the Carotid to an
unaffected site and taking another measurment and comparing the two for the
diameter reduction measurment.
All of the Labs that I have worked in or have been exposed to at this point
and time have used the European meathod in which you measure the most
stenotic site and then the diameter of the original lumen at the exact same
point in the carotid.
Also what would be the advantage to actually using the North american
"distal" method? With most newer ultrasound machines I have found it
relatively easy in the majority of cases, Excluding highly calcific
plaque's, to identify the normal lumen and measure the original diameter at
the site of stenosis. I would think that because the carotids diameter
decreases distally this would give you falsly elevated diameter reductions
Thoughts and responses
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