RT-Struct does not always align with the original CT Scan

[Joshua-Roche]

I have a deep learning model that segments a DICOM-formatted CT scan. The segmentation is saved out as a numpy array. When I try to convert this array to an RT-Struct, providing the folder that the CT scan lies in and the numpy array and overlay this RTStruct in DICOM-Viewing Software, the segmentation is not in the correct place, but offset ~120 slices (this offset number changes for every scan).

I've had real trouble with these CT scans.

Josh