The segmentation image from 3D slicer does not match the main image in itk snap

Hello,

I was trying to obtain the 3D segmentations maps as well, with the same dimensions as my CT images.

As mentioned, I tried to export the visible segments to binary labelmap. However, the segmentation is still “cropped” and doesnt match the dimensions of the CT.

I also tried to “export” the individual segments into labelmaps, using the CT as a reference, however clicking on the export button I don’t get anything

Is there a way to save the segmentations having the same dimensions as the CT?

Thank you