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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Pract Radiat Oncol. 2013 May 21;4(1):e21–e29. doi: 10.1016/j.prro.2013.04.002

Figure 5.

Figure 5

Illustration of TPS calculated dose in the skin-to-air boundary region for all calculation grid sizes. It can be seen that dose is calculated for approximately 2 voxels outside the phantom surface and therefore a more rapid dose fall-off is demonstrated for smaller calculation voxel sizes. Dose inside the phantom appears to increase at similar rates.