One of Dutch artist M.C. Escher's works is a man is admiring a piece of art that itself depicts the building the (very same) man is in [0]. Escher left out the middle bit of the painting, probably since it's fairly complicated, putting his signature there instead. The video itself is about the complex analysis used to fill in that missing middle, based on a paper ~20 years ago.
In my limited experience with static cards you really do just end up learning the "appearance" of a card, which is why I've been more successful with dynamic cards, like say a card showing a concordance randomly selected from a large corpus every review, showing the word I want to learn in various contexts.
As far as I know, not technically (although I haven't kept up in the area), but you can definitely sweep through a volumetric sample; there are microscopes that can for example illuminate a thin z-plane of a transparent sample and collect the image or those that can reject out-of-focus (off-z) light for a particular z-plane, then move to another z-plane, etc. and then generate a volume on the software side.
I work with microscopy data and we have to convert all the proprietary-but-still-readable-by-some-random-package image data generated by microscopy companies to ome-tiff/ome-zarr for it to be in a manageable format. I think it's great!
[0] https://pub.math.leidenuniv.nl/~smitbde/papers/2003-de_smit-...