I can't see why you should see an error message about MDAC 2.5 unless your computer is trying to install software from the CD. i.e. it's possibly got an 'autorun' program on it, which seeks to install a viewing program for the X-ray files.
If so, your best chance of accessing those files might be to forget about the viewing program which the CD seeks to put onto your computer and to install a different one (or perhaps a later version of the same one, which is compatible with Windows 10).
Try this:
Insert the CD into your computer.
If you get the 'MDAC 2.5' warning, simply close the dialogue box.
Go to 'Computer' (or whatever else W10 calls it - I'm still on W7).
RIGHT-click on the icon for the CD and select 'Explore' (or whatever W10 might now call that function).
You should then see the contents of the CD. Have a look around (possibly probinginside folders) to see if you can identify where the X-ray image files are. If you can find them, it will mean that they're stored outside of the program which was trying to install itself onto your computer, so you should be able to access them with alternative software.
Assuming you've managed to get that far, try double-clicking on an X-ray image file, to see if you've already got a suitable viewing program on your computer. If you only get a message telling you that Windows doesn't know which program to open the file with, make a note of the file extension which has been used to save those files with.
Then carry out a web search (or get us to do it for you) to try to find a program which can open those files. Once you've installed such a program, double-clicking on an X-ray image file should then open in it (or you can open the viewing program first and then go to File > Open to access an X-ray).