Rocha, HumbertoDias, JoanaVentura, TiagoCosta Ferreira, BrigidaLopes, Maria do Carmo2021-01-052021-01-052020-08http://hdl.handle.net/10400.22/16651The latest generation of linear accelerators allows the use of noncoplanar trajectories in arc therapy which combine the benefits of noncoplanar intensity-modulated radiation therapy (IMRT) treatment plans, such as improved organ sparing, with the benefits of arc therapy treatment plans, such as short treatment times. In this paper, we propose a two-step approach based on dosimetric criteria for the optimization of noncoplanar arc trajectories. In the first step, an initial set of anchor points (noncoplanar beam directions) is computed using a beam angle optimization (BAO) algorithm.engRadiation therapyNoncoplanar arc therapyOptimizationconference object10.1007/978-3-030-31635-8_155