Event Notification Report for August 13, 2026

AGREEMENT STATE REPORT - MEDICAL EVENT

The following is a summary of information provided by the Florida Bureau of Radiation Control (BRC) via email:

On July 30, 2026, a 76-year-old patient was undergoing treatment with Y-90 Theraspheres. The prescribed liver dose was 151 Gy, but only 24.1 Gy (15.96 percent) was actually delivered due to a partial kink in the catheter attached to the delivery tube. Both the patient and the treating physician have been informed. The treating physician will reevaluate the patient in one month. The incident has been reported to the radioactive material licensing section for further action.

Florida Incident Number: FL26-066

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.

LOST AND FOUND SOURCE

The following is a summary of information provided by the licensee via phone:

On August 6, 2026, at 1255 EDT, the licensee's radiation safety officer was notified of a found source near Fort Wainwright, Alaska. On August 5, 2026, a member of the public found an M67 sight-unit at a local disposal/transfer site. The total activity for the source is 5.79 Ci of tritium. The source appeared to be intact and wipe samples were taken. There were no indications of personnel exposures. The source is currently with Fort Wainwright Police. It is unknown when the source went missing but the licensee will conduct an investigation.

AGREEMENT STATE REPORT - DAMAGED SOURCE HOLDER

The following information was provided by the Texas Department of State Health Services (the Agency) via phone and email:

"On August 6, 2026, the Agency received notification from the licensee regarding a source holder not operating as designed. The licensee reported that the source holder, a Vega model SHLG-3, contains an 8000 millicurie cesium-137 sealed source. On August 5, 2026, the licensee discovered that when the source shutter is in the open or operational position, radiation survey readings at the top of the shutter show normal exposure rates of around 2 milliroentgens per hour (mR/hr) at 1 foot. However, when the shutter is in the closed or shielded position, radiation readings at the top of the shutter are elevated and show exposure rates of around 375 mR/hr at 1 foot. The licensee reported that there is no risk of additional radiation exposure to members of the public or radiation workers when the on/off mechanism is in the open position. The licensee has contacted Vega to repair the unit."

Texas Incident Number: 10315