I have a CD with medical images from a recent testing procedure, but it says Windows XP or newer is required. I do not have any Windows PC available - we have Mac and Ubuntu. Is there some software I can install to make the CD images viewable?
Just put the CD in the Ubuntu computer and open it with Nautilus or your desktop filesystem. If the photo format is not available to Ubuntu, you may need the "restricted-extras" package.
sudo apt-get update sudo apt-get install ubuntu-restricted-extras ubuntu-restricted-addons
Even though products advertise that you need Windows blah blah blah or newer doesn't actually mean it won't work on Ubuntu. Very few companies are willing to do product testing on Linux compatibility so for legal (and corporate endorsement) reasons, they only say Windows.
Unless it's some sort of a Windows application or program and not just files, you should be more than capable of viewing the photos.
Even if it is a Windows application, you can probably use the "wine" application to run the .exe or even a Linux version or clone of the equivalent Windows program.