Fig. 1From: Quality assurance of non-coplanar, volumetric-modulated arc therapy employing a C-arm linear accelerator, featuring continuous patient couch rotationSelected continuous non-coplanar arc trajectories derived using the RayStation treatment planning system. The vertical and horizontal axis show the couch and gantry angles, respectively. The red lines show the collision borders between the gantry head and couch (TrueBeam data)Back to article page