Is your feature request related to a problem? Please describe.
in terms of the reference space orientation, dicom and itk by default use LPS https://dicom.innolitics.com/ciods/mr-image/image-plane/00200037, nifti and nibabel use RAS (https://nipy.org/nibabel/coordinate_systems.html#nibabel-always-uses-an-ras-output-space). the monai readers/writers support a flag to switch between them, would be great to have the metatensor also track the value