ENS 53168: Difference between revisions

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| event date = 01/05/2018 CST
| event date = 01/05/2018 CST
| last update date = 01/18/2018
| last update date = 01/18/2018
| title = Agreement State Report - Delivered Dosage Different From Prescribed
| title = Agreement State Report - Delivered Dosage Different from Prescribed
| event text = The following was received from the State of Wisconsin via email:
| event text = The following was received from the State of Wisconsin via email:
An email the department received on January 5, 2018 was believed to be an update to the previous notification [EN #53148].  Upon further review by the department, it was discovered that the email pertained to a second medical event identified by the licensee on January 5, 2018. This was a medical event as described in DHS 157.72(1)(a)1.a. The prescribed dose was 145 Gy; the dose delivered was 70 Gy. The licensee uses D90 (dose delivered to 90% of the clinical target volume) < 80% for determining medical events. Using the licensee's dose based criteria; the dose received by the prostate was 48% of the intended dose.  The licensee has an additional criterion that the volume of the CTV to which 100% of the prescription dose delivered must be above 80%.  The licensee determined only 62% of the volume received the required dose.
An email the department received on January 5, 2018 was believed to be an update to the previous notification [EN #53148].  Upon further review by the department, it was discovered that the email pertained to a second medical event identified by the licensee on January 5, 2018. This was a medical event as described in DHS 157.72(1)(a)1.a. The prescribed dose was 145 Gy; the dose delivered was 70 Gy. The licensee uses D90 (dose delivered to 90% of the clinical target volume) < 80% for determining medical events. Using the licensee's dose based criteria; the dose received by the prostate was 48% of the intended dose.  The licensee has an additional criterion that the volume of the CTV to which 100% of the prescription dose delivered must be above 80%.  The licensee determined only 62% of the volume received the required dose.

Latest revision as of 21:41, 1 March 2018

ENS 53168 +/-
Where
Aspirus-Wausau Hospital
Wausau, Wisconsin (NRC Region 3)
License number: 073-1342-01
Organization: Wisconsin Radiation Protection
Reporting
Agreement State
Time - Person (Reporting Time:+279.23 h11.635 days <br />1.662 weeks <br />0.382 months <br />)
Opened: Kyle Walton
21:14 Jan 16, 2018
NRC Officer: Howie Crouch
Last Updated: Jan 18, 2018
53168 - NRC Website