Each image in a first set of images includes respective exposures of an image capture device to a beam of radiation, each of a plurality of components of a radiation delivery system being at respective specified orientations with respect to a three-dimensional coordinate system during each of the exposures. Respective beam images are reconstructed from each of the exposures by drawing a line at a predetermined angle to the first image and through a center of a radiation beam shown on each first image. The reconstructed beam images are combined on a second image.
