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3D phantom view for a single-isocenter nine-target VMAT radiosurgery plan with a full arc and three half arcs. The planned nine targets were spheres with diameters ranging from 5–40 mm and located at the center and eight corners of a virtual cube having a side length of 8 cm, where the cube center and the center of an I'mRT phantom coincided. The linear accelerator isocenter was also positioned at the center of the phantom.
