Since this is a new area of study, my mesage may be simple; but I hope,
informative.
DATA TRANSLATIONS US Phone 1-800-525-8528, has a very good GLOBAL LAB
Image demo. for WINDOWS.
A text, by Gregory A. Bates, "Digital Image Processing" John Wiley &
Sons, USBN 00471-00949-0 (paper) has a disk that is used with the text
book.
For a large scale, there is the "slices" of ADAM at
http://www.nlm.nih.gov/extramural_research.dir/visible_human.html
I am certain that NASA has more- I am looking.
RBarnekowj at AOL.com