Convert RTSTRUCT issue

[Rok3y]

Hello,

I am trying to apply vector field to RTSTRUCT to contours.dcm file (note: file in dicom format). Here's plastimatch command:

plastimatch.exe convert --input InitialCT\contours.dcm --output-dicom WarpedRTSTRUCTtest --referenced-ct InitialCT --xf vectorField.nii.gz

As a result tags are missing

Original tags:

(3006, 0002) Structure Set Label SH: 'STRCTRLABEL' (3006, 0004) Structure Set Name LO: 'STRCTRNAME' (3006, 0008) Structure Set Date DA: '20210616' (3006, 0009) Structure Set Time TM: '115412.000000' (3006, 0010) Referenced Frame of Reference Seque SQ: <Sequence, length 1> (3006, 0020) Structure Set ROI Sequence SQ: Array of 23 elements (3006, 0039) ROI Contour Sequence SQ: Array of 23 elements (3006, 0080) RT ROI Observations Sequence SQ: Array of 23 elements

Tags after applying vector field:

(3006, 0002) Structure Set Label SH: 'AutoSS' (3006, 0004) Structure Set Name LO: 'AutoSS' (3006, 0008) Structure Set Date DA: '20210607' (3006, 0009) Structure Set Time TM: '121851.405000' (3006, 0010) Referenced Frame of Reference Seque SQ: <Sequence, length 1>

Not that Structure Set ROI Sequence, ROI Contour Sequence and RT ROI Observation Sequence tags are missing. Any idea why ? 

This does not happen for all contours.dcm files just a few ones. And I've check difference between working and non-working .dcm files. There seems to be no difference

Best regards,

Rok