Exporting only one plane of the reconstruction

Operating system: windows 10
Slicer version: 4.10.2
Expected behavior: I am new to it, so not sure what to expect
Actual behavior:

I have a set of dcm dose files exported from Muriplan. Originally, those are axial files. I only one dcm file, from the reconstruction, in this case a coronal plane (I know the position of the plane I need). I need to export it in Radiotherapy RTDose format. Is that possible?
Thank you