CT SCANS
Very high doses of radiation can damage the developing organs of a fetus, especially between 4 and 17 weeks gestation. However, the radiation from a CT scan is too low to cause any damage to developing organs.

There is, however, an increased risk of childhood cancer. Studies have shown that the radiation received from a CT scan will double the risk of dying from childhood cancer. In practice, the risk is probably lower because every effort is made to keep the radiation as low as possible. It should also be noted that very few children die from cancer, so that even doubling the risk is still a very small risk. In comparison, the excess risk of fatal childhood cancer (1 in 2000) is equivalent to driving 20,000 miles in a car or living in New York City for 3 years.

The risks and benefits of a CT scan should always be weighed with every individual and situation. A consent form signed by the patient, physician, and witness is obtained prior to the scan.

IV CONTRAST
The use of intravenous iodinated contrast has not been shown to be harmful to the developing fetus. However, the iodine may interfere with the baby's thyroid gland. It is recommended that thyroid hormones be checked shortly after birth.

BREAST FEEDING
Iodinated contrast is present in breast milk of nursing mothers who received IV contrast. It is recommended that mothers stop breast feeding for 24 hours and to pump and discard milk over this time.