The following information was received from the
Massachusetts Radiation Control Program (the Agency) via email:
On August 11, 2025, three radioactive iodine-125 sealed sources (seeds) were removed from a patient receiving a radioactive seed localization procedure. The licensee expected to remove four I-125 seeds, which were placed in the patient on August 8, 2025, but only located three of the seeds.
The missing seed was not located after extensive surveys of the patient, staff, and all areas where the seed may have been misplaced. The seed has not been located at this time.
This is a 30-day reporting requirement per [Code of Massachusetts Regulations] 105 CMR 120.281(A)(2), missing licensed radioactive materials in aggregate quantity equal to or greater than 10 times quantity specified in 105 CMR 120.297, Appendix C.
The Agency considers this event to be open.
Manufacturer: IsoAid, LLC
Model: IAI-125A
Source: 0.181 mCi I-125
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