Fig. 2From: Dual-energy CT with virtual monoenergetic images to improve the visualization of pancreatic supplying arteries: the normal anatomy and variationsBox-and-whisker plots of the differences in CNR (a) and SNR (b) between 40-keV MEI (+) and PEI. The box indicates the 25- and 75-quartile; the horizontal line indicates the median and the cross indicates the mean. Whiskers show the 5 and 95 percentiles; outliers are indicated by squares and circlesBack to article page