PHS Bureau of Radiological Health transferred to FDA. Its mission: protection against unnecessary human exposure to radiation from electronic products in the home, industry, and the healing arts.

In premature infants, minimizing radiation exposure is especially important because they may require multiple radiological exams for problems like underdeveloped respiratory systems.

For the exposure of patients in diagnostic radiology, individual dose limit does not apply, but optimization of radiological protection may play a major role.