Abstract

Introduction.Quality assurance (QA) of a volumetric modulated arc therapy (VMAT) plan can be performed using an amorphous silicon electronical portal imaging devices (EPIDs) to improve the QA efficiency. In our clinical routine, dosimetric plannifications are calculated with clinical treatment planning system (TPS) Pinnacle (Philips Medical Systems, Madison, WI) and transferred to Eclipse (Varian Medical Systems, Palo Alto, CA). Then a 3D recalculation is required in order to use the portal dose image prediction (PDIP) algorithm, which extends the files preparation time. The aim of this work is to use Pinnacle to create a model dedicated to portal pre-treatment dose verification.

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