The following information was provided by the
Arizona Department of Health Services (The Department) via email:
The Department received notification from the licensee about a medical event involving I-131. On June 29, 2023, two patients were scheduled to receive I-131 doses of 75 and 100 millicuries (mCi) each. When the certified nuclear medicine technologist (CNMT) was preparing the first dose for the patient (75 mCi), the CNMT assayed the wrong dose but with the correct paperwork.
The authorized user was present for the administration and gave the patient a 100 mCi dose of I-131 when the prescribed dose was for 75 mCi. The licensee discovered the mistake prior to giving the second patient (prescribed 100 mCi) the incorrect dose of 75 mCi. The Department has requested additional information and continues to investigate the event."
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.