A family member may have received an exposure of 5,925 mrem while providing home care for the patient undergoing
I-131 therapy administered on March 22, 2013. The patient was hospitalized from March 22 to March 29, 2013 and then discharged with at-home precautions.
During the patient's hospitalization visitors including family members were provided radiation badges to monitor exposure. The badges were subsequently processed by Landauer on May 5, 2013 which identified that a family member received 5,925 mrem effective dose equivalent during this period of hospitalization. The subject badge was reread on May 6, 2013 which confirmed the initial reading. The Children's Hospital was notified on May 10, 2013 of the results. A survey of the patient's room found little contamination.
Children's Hospital conducted an extensive investigation but could not definitively identify the cause for the high exposure level.