Abstract
To develop and evaluate fully automated volumetric modulated arc therapy (VMAT) treatment planning for prostate cancer patients, avoiding manual trial-and-error tweaking of plan parameters by dosimetrists. A system was developed for fully automated generation of VMAT plans with our commercial clinical treatment planning system (TPS), linked to the in-house developed Erasmus-iCycle multicriterial optimizer for preoptimization. For 30 randomly selected patients, automatically generated VMAT plans (VMATauto) were compared with VMAT plans generated manually by 1 expert dosimetrist in the absence of time pressure (VMATman). For all treatment plans, planning target volume (PTV) coverage and sparing of organs-at-risk were quantified. All generated plans were clinically acceptable and had similar PTV coverage (V95% > 99%). For VMATauto and VMATman plans, the organ-at-risk sparing was similar as well, although only the former plans were generated without any planning workload. Fully automated generation of high-quality VMAT plans for prostate cancer patients is feasible and has recently been implemented in our clinic.
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