Fig. 4From: Benchmarking adult CT-dose levels to regional and national references using a dose-tracking software: a multicentre experienceDetection of differences in the range of dose levels for CT-thorax studies in the participating hospitals. Box plot of the CTDIvol-median value, interquartile range, total range and outliers for all CT-thorax examinations on the five CT systems with the national P75 and P25 DRLs as benchmarkBack to article page