The following information was provided by the
Oregon Department of Health Radiation Protection via email:
At 1000 PDT on September 21, 2023, during an administration of a split-dose of Y-90 [yttrium] SirSpheres to the liver, the first dose was not completely delivered to the patient. The second dose, same lobe but a different site, was delivered completely. (First prescribed dose: 7.2mCi; First delivered dose: 5.614 mCi)
The physician does not believe additional treatment will be needed but the case will be discussed by the licensee in a follow-up conference. The senior radiologist believes there was a `clump of spheres' remaining at the hub of the syringe for the first dose, resulting in under-dosing the patient by more than 20 percent.
Corrective action is still to be determined.
Oregon Event Report Number: 23-0051
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.