Check out this link for a creepy but well done 3D image.  Ok, ok, you likely showed on this link looking for a paper idea, so jump over to the link:

Medical Image Analysis

There a bunch of links to papers that you can use in your bibliography, pretty cool.  Also excellent images of gory stuff that you can link to and make your paper look more interesting.  Also, this is good for Halloween, which will come much sooner than I like to think about.

 

 

image