Orateur
Description
The IDEAL project aims to substitute the patient specific quality assurance (PSQA) measurements for light ion beam therapy by independent dose calculation (IDC) using Gate-RTion. In this contribution, the commissioning status of the IDEAL v1 at MedAustron Ion Therapy center will be discussed including a physics settings variation study. Further, the status of the integration of IDEAL v1 into the commercial software myQA-iON (IBA Dosimetry, Germany) will be presented.
To find an optimal balance between calculation time and dose calculation accuracy, physics settings in GATE-RTion were varied and compared to dose commissioning data of the MedAustron carbon ion beam line. Four reference nuclear physics lists, two EM physics lists and secondary particle settings were compared against 16 measured depth dose profiles in water, lateral profiles at various distances in air and absolute dose in reference condition, respectively, with and without range shifter. Calculation times varied considerably for the different settings, while the dose calculation accuracy was in all tested cases within tolerances. Combining the fastest options could speed up the simulations by up to a factor 10 in some scenarios compared to the current default settings in IDEAL 1.
