The State provided the following information via email:
On July 26, the RSO at a broad-scope medical facility contacted the agency to report a possible medical event involving I-131. He stated that on July 24, a 5 microCurie Na-I thyroid uptake diagnostic study was ordered by an endocrinologist at the facility; however, instead of 5 microCuries, the doctor ordered a 2 millicurie dose. The nuclear technologist did not question the request and the dose was drawn and administered to the 16-year old male patient. When the authorized user listed on the license came in to do the imaging on July 25, he noted the error. It appears the authorized user was not directly involved in ordering the study. The licensee estimated the whole body dose as 1.89 Rem and the dose to the thyroid of 4,140 Rem based on 59.2% uptake. Using the same assumptions, the intended dose for 5 microCurie I-131 would be 10.4 Rem. The licensee anticipates some depletion of thyroid function as a result of this administration of 2 millicuries. The RSO continues to investigate the matter and more information will be provided.
Illinois Item Number: IL-060036