Figure 2From: Shared data for intensity modulated radiation therapy (IMRT) optimization research: the CORT dataset Beamlet grid, gantry angle, and couch angle definitions. A picture displaying (a) the beamlet coordinate system used, for a sample beam placed at gantry angle 0 and couch angle 0, and (b) the definitions of the gantry and the couch angle.Back to article page