Figure captions (LaTeX export)

I am producing LaTeX documents using Org + IPython and I would like to add figure captions (and possibly labels). I can do this, e.g., by adding `#+CAPTION: Bla` just above the figure in the results block. E.g., with `:results raw drawer`:

#+RESULTS:
:RESULTS:
# Out[48]:
#+CAPTION: Test.
[[file:myFile.png]]
:END:

However, when reexecuting the source block, the results block gets replaced and the caption vanishes. Do you know a way around that?

Thanks,
Dominik

Edit: I just wanted to add, that I now use something like

#+BEGIN_SRC ipython :session :ipyfile FileName.png :exports none :results none
#+END_SRC

#+NAME: fig:file-name
#+CAPTION: Nice caption.
[[file:FileName.png]]

It needs too much user intervention for my taste, but it could be automated quite well. I leave this open, maybe you have a better suggestion, but please feel free to close the issue!