Hello
This project will need to define a suitable standard to save information.
It may be simple XML file, database or maybe DICOM standard.
Right now is possibly to start creating an application that use plain XML file.
Overview of electronic health record systems and standards:
http://en.wikipedia.org/wiki/Electronic_health_record ,
http://en.wikipedia.org/wiki/Health_informatics ,
http://en.wikipedia.org/wiki/DICOM .
Best Regards,
Iouri