I was unable to find any Mac downloads on web site (e-mailed firstname.lastname@example.org and currently waiting for a reply/response [probably not until next regular short USA work week], but probably won't get a good answer). For now, I will have to extract these them in Windows XP Pro. SP3. Ugh! ?
I downloaded version 4.0 (32 bits) of OsiriX, and it runs on Tiger 10.7.5. I could not manage to save or export the images as anything, but they opened nicely, so I just made screen shots of the two X-rays my wife wanted to send her orthopedist prior to her appointment next Monday. That worked well. 2b1af7f3a8