Erratum to: Eur Radiol

DOI 10.1007/s00330-016-4293-7

Owing to an oversight in typesetting, Fig. 2 was duplicated and Fig. 3 (below) omitted from the original publication. The mistake has since been corrected. The publisher apologises for this error and the inconvenience caused.

Fig. 3
figure 1

Example of an upper rectal tumour missed by computer-aided detection (CAD) in a screening patient. Image quality was judged to be good by both readers, with a small amount of residual fluid which was well tagged