On Monday 9/10/07, the licensee was administering a 66 millicurie dose of
Yttrium-90 microspheres to a patient for the treatment of liver cancer through a catheter. The patient only received a dose of 47 millicuries, a 27%
underdose. The licensee is investigating the cause of the misadministration, but they believe the catheter used for the administration of the isotope failed or is leaking. The licensee believes there is no permanent functional damage to the patient. The physicians have been informed by the
RSO that they need to notify the patient of the
underdose and report that notification to the
RSO. The treatment device is from
MDS Nordion and a
MDS Nordion company representative was on site during the administration of the isotope. The licensee intends to use the
MDS Nordion representative for technical assistance in troubleshooting this problem once background radiation levels permit a closer inspection of the catheter.
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.
This event (
EN43630) has been reviewed and determined to be a reportable medical event.