Generally, yes. The vast majority of work performed at Yale with radioactive materials can continue without modification during
pregnancy.
Once a person officially informs her employer in writing of her pregnancy, new dose limits apply. A person can obtain a second film
badge from Radiation Safety. This second badge is worn at the waist to monitor the exposure to the unborn child.
Regulations require that the dose for the 9 months of pregnancy must not exceed 500 mRem. Radiation Safety personnel can review
your prior exposure history and your current projects that involve the use of radioactive materials or radiation producing equipment.
This will provide an estimate of the likely exposure that my be received during the duration of pregnancy.
This review may also result in suggestions to further reduce your exposure to radiation. Because the fetus is sensitive to radioiodine, the RSS may suggest that you not perform iodinations during your pregnancy. Because of the increase sensitivity of the fetus, the RSS may suggest you limit your use of some very large sealed sources of radioactive material. In 1996 and 1997, no worker at Yale received a whole body dose in excess of 100 mRem.