DICOM @ OFFIS

I would like to use dcmodify for changing or inserting header data in PET files. This works fine, but inserting a sequence item into an empty sequence results in an error message. Example: dcmodify.exe -v -i "(0054,0016)[0].(0018,0031)=FDG" "C:\TMP\pet.dcm" Processing file: C:\TM...