Event Notification Report for December 09, 2025

AGREEMENT STATE REPORT - MEDICAL EVENT

The following information was provided by the Maryland Department of the Environment via email:

"On December 1, 2025, at about 1100 EST, the Maryland Department of the Environment's Radiological Health Program (MDE/RHP) was notified via phone and email from the radiation safety officer (RSO) of MD-07-014-01 (University of Maryland Baltimore) that 13.78 mCi of F-18 fluorodeoxyglucose (FDG) was used to a patient being evaluated for metastatic prostate cancer instead of F-18 prostate-specific membrane antigen (PSMA).

"The incident occurred on November 28, 2025, and the licensee is investigating the case and will provide a written report.

"MDE/RHP will finalize a reactive investigation."

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.

AGREEMENT STATE REPORT - DAMAGED GAUGE

The following information was provided by the South Carolina Department of Environmental Services (The Department) via email:

"GeoTrack Technologies, Inc. informed the Department via phone on December 1, 2025, that an authorized user and portable gauging device were hit by a truck while in use. The licensee reported that a 10 mCi Cs-137 and 40 mCi Am-241:Be Humboldt Scientific Model 5001 [gauge] was involved in the event. A portion of the index rod was broken and separated from the portable gauging device. The licensee was able to secure the source back into the portable gauging device. The licensee secured the area and waited for the Department's arrival. The licensee did not report any health or safety concerns and does not believe there to be any over exposures associated with the event.

"The Department went onsite to the construction site on December 1, 2025. Removable contamination and ambient dose surveys were performed. Ambient dose surveys were consistent with the Sealed Source and Device Registry certificate. The removable contamination surveys were background or below.

"The device is secured and being stored at the licensee's facility.

"This event is still under investigation by the Department."

South Carolina event number: To be determined.

AGREEMENT STATE REPORT - LOST RADIOACTIVE SAMPLES

The following information was provided by the Colorado Department of Public Health and Environment (the Department) via email:

"The licensee prepared a shipment of samples in petri dishes containing Pu-239 (0.0869 uCi) and Sr-90 (0.0865 uCi) evenly distributed on 32 planchets with TDS [technical data sheet(s)] on November 3, 2025. The samples were sealed in a box which was vacuum sealed and labeled with a label detailing the package contained radioisotopes. On November 4, 2025, a shipping tracking number could not be located. The shipping department lead contacted the radiation safety officer. Efforts were made following this communication to find the missing package by contacting customers who had received other dangerous goods shipments from that day. No samples were found before the incident was reported by phone and in writing to the Department on December 1, 2025. Corrective actions have not been determined by the licensee at this time and further investigation by the unit is ongoing."

Colorado Event Number: CO250045

THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf