Was anyone else taught to use the highest velocity of the only the proximal or mid ICA for grading criteria? The reasoning being that the distal portion of the ICA dives and can be falsely elevated – as well as surgeons aren’t able to intervene that distally. Also research into was used for only the first 2 centimeters of the internal carotid.


I can’t seem to find anything published that specifically states this – does anyone have any thoughts?


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