Are different methods of measuring carotid stenosis on angiograms equivalent?
Different methods of measuring carotid stenosis yield clinically important disparities, but measurements can be standardized by converting between methods using a simple arithmetic equation.
There were major and clinically important disparities between measurements of stenosis made using different methods of measurement on the same angiograms. However, it is possible to convert measurements made by one method to those of another using a simple arithmetic equation.
Rothwell et al. (Thu,) studied this question.