Rule Rule 333-106-0366
Computed Tomography X-ray Systems: Dose Limits

The CTDIvol for the following CT examinations on standard phantoms shall not exceed the dose limits listed below:


Adult head, 80 mGy;


Adult abdomen, 30 mGy;


Pediatric abdomen (five years of age or 40 pounds, 20 mGy; and


Pediatric head, 40 mGy.
Last accessed
Feb. 4, 2021