Letter by Bos et al Regarding Article, "Intracranial Carotid Calcification on Cranial Computed Tomography: Visual Scoring Methods, Semiautomated Scores, and Volume Measurements in Patients With Stroke".

Abstract

With great interest we read the recent article by Subedi et al,1 in which the performance of 2 visual scoring methods for intracranial carotid artery calcification (ICAC; ie, the original Woodcock score2 and a modified Woodcock score) is compared with volumetric ICAC measurements. The original Woodcock score characterizes calcification in the intracranial carotid artery as absent, mild, moderate, or severe. The modified Woodcock score as proposed by the authors involves the same 4-point classification, but it was applied to each slice of the computerized tomographic examination and then summed into a total calcification score. The authors found a high correlation between the original Woodcock score and volumetric calcification measurements. Not surprisingly, this correlation improved for the modified score, which may be explained by the fact that more inspections reflect a …