ENS 44275

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v t e ENS Event
14:00 May 1, 2008
Title	Medical Event - Excess Skin Exposure During Treatment
Event Description	A women was prescribed a breast cancer treatment using an HDR mammosite balloon brachytherapy. The dose was delivered in 10 fractions using Iridium - 192 seeds. During administration of the first fraction, the physicist received an alarm from the HDR computer, the alarm was overridden based on the judgment of the physicist at the time of the event and the treatment was completed. Additional fraction treatments were also completed as intended. Subsequent review of the first treatment and the cause of the alarm indicated that a medical event may have occurred. The alarm was indicating that the seed placement was dislodged by 2 centimeters. The physicist thought at the time that the alarm was indicating the seed dislodged by only 2 millimeters. The treatment calculations were revisited and the dislodgment of the seed by 2 centimeters put the seed at the skin entry point of the application catheter. This resulted in an under dose to the target site and an overdose to the skin. Preliminary calculations estimate that the skin in a 7 mm diameter around the catheter entry point may have received a dose of 3700 centigrays based on the strength of the seed (4.47 curies) and the dwell time. The patient will be notified of the event. The patient's doctor will continue to monitor the skin for any ill effects. 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.

ENS 44275 +/-
Where
Bon Secours Virginia Health Source Richmond, Virginia (NRC Region 1)
License number:	45-25187-01
Organization:	Bon Secours Virginia Health Source
Reporting

10 CFR 35.3045(a)(1)
Time - Person (Reporting Time:+865.12 h36.047 days <br />5.15 weeks <br />1.185 months <br />)
Opened:	Judy Chin 15:07 Jun 6, 2008
NRC Officer:	Bill Huffman
Last Updated:	Jun 6, 2008
44275 - NRC Website
v • d • e

v t e Emergency Notification System
Bon Secours Virginia Health Source with 10 CFR 35.3045(a)(1)
WEEKMONTHYEAR2008-05-01T14:00:00 [Table view]
[ENS list for Bon Secours Virginia Health Source]

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