[BitBucket user: Sébastien Jodogne]
[BitBucket date: 2017-07-11.15:57:48]

This is solved by the combination of the two following changesets (the version of the core of Orthanc must be >= 1.2.1):

https://hg.orthanc-server.com/orthanc/changeset/563bf878407a7f2f45afbcbcc39f78d6410027cd

https://hg.orthanc-server.com/orthanc-dicomweb/changeset/a99830eb937c6afb22c55c842ad1a0ad3a4b431a