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Fig. 2. Scatterplot shows interscan difference in calcium volume
scores (CVS) of two scans taken 5 min apart compared to mean CVS of two scans
for all subjects with at least one CVS greater than 0 mm3. Lines
represent 95% confidence intervals for interscan difference. CVS1 =
CVS from initial electron beam CT scan, CVS2 = CVS from second
electron beam CT scan obtained after 5-min rest.