The State received notification of a possible medical event due to an equipment malfunction. The licensee was treating a patient for rectal cancer using an
HDR Nucleotron Micro Select Model 105.999 Serial 31776. The prescribed treatment consisted of the administration of 29 catheter doses of
Iridium-192. During the 12th catheter dose, an equipment malfunction caused a failure of the administered treatment. The failure mode was Code 200 - "No radiation detected." The failure mode caused the unit to stop treatment by not proceeding to the next catheter. Nucleotron immediately contacted. A service technician is expected to arrive on 8/8/08 for repair of the device. Once the
HDR unit is repaired, the treatment plan and written directive will be modified and treatment of the patient resumed. Patient and physician have been advised of the treatment interruption and no adverse impact is expected.
The State of Ohio plans to send an inspector to the facility on 8/11/08.
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.