Convert 3d nfti data to 2d

Support
1

Hi,
I have 3D nifti data i want to convert it to 2d .
Are there any tools in slicer you can recommend?
Thanks a lot!

2

What would you like to achieve? Use the images as training data in a CNN? How would you choose what slices to extract, what region, what resolution?

4

I have 3D data of dimension (255,255,216) i want to convert it to 2D for as training data in a CNN