Fig. 3From: Progressive resolution optimizer (PRO) predominates over photon optimizer (PO) in sparing of spinal cord for spine SABR VMAT plansMulti-leaf collimator openings for randomly selected control points between volumetric modulated arc therapy plans generated by a progressive resolution optimizer (VMATPRO) (a) and by a photon optimizer (VMATPO) (b) for a representative spine stereotactic ablative radiotherapy patientBack to article page