ESTRO course Dose Modelling and Verification 2017

11

Inappropriate commissioning

 Reported 2007 at Hôpital de Rangueil in Toulouse, France

 In April 2006, the physicist in the clinic commissioned the new BrainLAB Novalis stereotactic unit o Possible to use small fields (6x6mm) o “…an ionisation chamber of inappropriate dimensions…” for calibrating the smallest microbeams was used ( Farmer chamber was used) o The incorrect data was entered into the TPS o 145 patients affected

Warsaw 2017