Variability in Arteriographic Assessment of the Carotid Bifurcation

Fisher, Mark; Ahmadi, Jamshid; Chi-Shing Zee; Weiner, John M.
February 1987
Angiology;Feb1987 Part 1, Vol. 38 Issue 2, p116
Academic Journal
We evaluated interobserver and intraobserver variability in the arteriographic assessment of the carotid bifurcation. Two neuroradiologists evaluated area stenosis and lumen surface morphology for 60 biplane carotid arteriograms in two reading sessions. Absolute interobserver differences for area stenosis averaged 8.8%, and interobserver differences were statistically significant for arteries of at least 50% stenosis. Analysis of observations for lumen surface morphology revealed statistically significant interobserver differences, averaging 29.5% disagreement. Intraobserver differences were not statistically significant. Observer variability for arteriography should be considered in the process of evaluating patients for carotid endarterectomy.


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