Radiation Protection & Shielding:

[Goodman]

Univerisity of Iowa had an extremely good website for medical purposes. I have always consulted it extensively, but today I tried to look for the information and it had a message saying that "Virtual Hospital" website was closed this year due to lack of funding. However, I had a reference noted and it still worked, kindly review this reference, hope it will help

http//www.vh.org/

or

http//www.radiologyeducation.com/