Figure 4From: Optimization of extracranial stereotactic radiation therapy of small lung lesions using accurate dose calculation algorithmsDifference Matrices of measured – calculated dose for the different dose calculation algorithms in the isocenter slice for the 9 field plan: a) Pencil Beam b) Collapsed Cone c) Monte Carlo d) Gafchromic EBT film associated with the difference matrices. The agreement of calculated with measured dose improves from PB to CC to MC.Back to article page