I would like to view segmentations from the 2021 KiTS challenge (https://kits21.kits-challenge.org/). These are saved as int64. MITK cannot open these segmentations.
In python, SimpleITK is able to read the segmentations just fine:

import SimpleITK as sitk
a = sitk.GetArrayFromImage(sitk.ReadImage('kidney_instance-2_annotation-3.nii.gz'))
print(a.dtype)

dtype('int64')

Since MITK is based on ITK (same as SimpleITK) I would assume that is should be able to load the segmentation as well? Or is MITK a 32bit program?

I can convert the segmentations to int32 or uint32 in python and then they can be read by MITK, but this seems like a thing not every MITK user will want to or be able to do :-)

Ubuntu 18.04

Best,

Fabian