On April 20, 2004, a female patient was administered 6 microcuries of
I-131 sodium iodide orally and on April 21, 2004, 12 millicuries of Tc-99m (Tc04). An investigation was undertaken after it was determined that the patient was pregnant. The duration of gestation was estimated as 10 weeks +/- 1 week.
The dose to the embryo/fetus occurred on April 20-21, 2004, and it was discovered on April 26, 2004. Outside experts estimated that, if the thyroid were functioning, the fetus received a dose of 6.6 rem, and if the thyroid were not functioning, a dose of 0.5 to 1 rem.
The permittee has implemented initial corrective actions to prevent a recurrence of the circumstances that resulted in the dose to the embryo/fetus. The permittee is aware of the requirements for notifying the patient and the referring physician.
The Department of Veterans Affairs will evaluate the circumstances related to this incident and will submit a written report to NRC, Region III, within 15 days.