1. Federal Food, Drug, and Cosmetic Act, Sect 520. 1g.
2. Federal Food, Drug, and Cosmetic Act, 21 CFR. Sect 812.1a.
3. Federal Food, Drug, and Cosmetic Act, 21 CFR. Sect 812.2c.
4. Federal Food, Drug, and Cosmetic Act, 21 CFR. Sect 812.3m.
5. U.S. Food and Drug Administration and regulation of medical devices in radiology;Pritchard;Radiology,1997