> http://cvs.creatis.insa-lyon.fr/viewcvs/viewcvs.cgi/gdcm/src/gdcmSerieHelper.cxx?r1=1.4.2.2&r2=1.4.2.3 Ok making progress, so I modified gdcmSerieHelper. Could you now explain how by modifying gdcmSerieHelper there was impact on the signature of gdcm::File::GetImageOrientationPatient. Thanks, Mathieu