Correction to: Eur Radiol

https://doi.org/10.1007/s00330-018-5458-3

The original version of this article, published on 04 June 2018, unfortunately contained a mistake. The following correction has therefore been made in the original:

The name of A.G. Franks was presented incorrectly and one of his affiliations was missing. The corrected author list is given above; the corrected affiliations are given below. The original article has been corrected.