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Fig. 7A —Comparisons of automated and radiologist scoring with distention method 1. Distention is expressed as percentage of colonic segment of interest with diameter greater than 2 cm. Bland-Altman plot shows mean of scores of radiologists and quality assessment software (x-axis) compared with difference of mean scores of radiologists and quality assessment software score (y-axis). Dashed line indicates mean difference (0.1%); solid lines, lower limit (–25.6%) and upper limit (25.9%), where limits are defined as 2 SD.