Hello,
thank you for the answer. I do have the Quantitaive Reporting extension installed and I managed to succesfully export the segmentation to DICOM SEG.
After doing so, I only encountered the issue described in the following thread https://discourse.slicer.org/t/matching-segmentation-with-the-input-data/21817
Do you know why a situation described in the thread above happens? @cpinter
Thank you