The following information was received from the state of
North Carolina via email:
A patient being treated for liver tumors was prescribed to receive 47.6 mCi of Y-90 microspheres, but instead received only 11.9 mCi (about 25 percent of prescribed). The remainder was in the vial as residual.
Because this under-dosing was not due to stasis or emergent patient conditions, and the delivered dose was less than 20 percent of that prescribed, this constitutes a reportable medical event according to the 2016 version (9) of the NRC guidance for Y-90 microspheres.
Source: Microspheres
Radionuclide: Y-90
Manufacturer: Sirtex Medical
Model: Sir-Spheres
S/N: Aggregate
Investigation is pending for the Medical Event.
North Carolina Tracking Number: 180039
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.