Erratum to: Clin Transl Imaging (2017) 5:209–223 DOI 10.1007/s40336-017-0225-z

The article “Amino acid PET and MR perfusion imaging in brain tumours”, written by Christian P. Filss, Francesco Cicone, Nadim Jon Shah, Norbert Galldiks and Karl-Josef Langen, was originally published without open access. After publication of the article in volume 5, issue 3, pages 209–223, the author decided to opt for Open Choice and therefore to make the article an open access publication. The copyright of the article has thus been changed to ©The Author(s) 2017 and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, duplication, adaptation, distribution and reproduction in any medium or format, as long as appropriate credit is given to the original author(s) and the source, a link is provided to the Creative Commons license, and any changes made are indicated.