1341 / 1359
Dublin 2018
Accuracy and limitations
•
Factors affecting DVH accuracy:
– Accuracy to which VOI is delineated (Main
contribution)
– Dose bin size
– Distance Map voxel size
– Sampling method and sampling resolution
– Shape of VOI
– Dose grid size
• ICRU 91 (1-2mm for FS<3x3, 2-5mm FS>3x3)
– Dose Calculation Algorithm (difference in modelling
heterogenities, penumbra…)