On a related note, there are a couple of good open source projects for reading the standard imaging files (DICOM). DICOM itself is an interesting mishmash of a standard, but is pretty powerful. Images are shuffled around using a PACS (Picture Archiving and Communication System) which lets the scanning machines send their images to a central location at the clinic, the clinic to send images to your radiologist, your radiologist to send them to the hospital, etc etc. Interesting stuff.

http://www.osirix-viewer.com/Downloads.html OsiriX is a DICOM viewer and PACS for Macs and iOS

http://www.dcm4che.org/ dcm4che is a collection of server based applications for DICOM and PACS. Sort of like OsiriX, but web based. It's Java Tomcat based and reasonably simple to setup.