Correlation of the averaged semiautomated stenosis measurements with the manual reference measurements and the average difference of the manual measurements minus the semiautomated measurements
| Correlation Coefficient (95% CI) | Average Difference | |
|---|---|---|
| Degree of stenosisa | 0.87 (0.83–0.90) | 6.2 ± 16% |
| Minimal diametera | 0.88 (0.84–0.91) | 0.1 ± 0.9 mm |
| Reference diametera | 0.68 (0.57–0.76) | 0.52 ± 0.5 mm |
| Corrected degree of stenosisb | 0.85 (0.80–0.89) | 2.1 ± 14% |
| Corrected reference diameterb | 0.69 (0.59–0.77) | 0.08 ± 0.5 mm |
Note:—P < .01 for all Pearson correlation coefficients. The corrected rows show the results of the semiautomated analysis, in which the maximal diameter at the reference position has been used in the stenosis calculations. Significant differences are displayed in bold.
↵a The average of 4 semiautomated measurements was used.
↵b A single run of semiautomated measurements was used.