Figure 7
From: Application of volumetric modulated arc therapy (VMAT) in a dual-vendor environment
Dose volume histograms for metastases in the lumbar vertebra. Comparison of dose volume histograms achieved with 7-field IMRT (dotted lines) and Single Arc VMAT (solid lines). Using the same dose volume objectives for optimization, higher doses to the PTV are achieved with VMAT for almost identical GTV coverage and homogeneity and sparing of the spinal cord but somewhat higher dose to the kidneys.