Slide 13

Here the dose has been mapped onto all structure surfaces. Note the beam footprints exiting the lungs, and the expected high dose at the tumor surface. This is a much simpler operation than dose surfaces, since a calculation only occurs at each structure vertex (13K) rather than at each dose point (300K). Thus, one is more likely to use the original dose volume for this type of operation. If dose surfaces and dose mappings are calculated from different dose volumes, one might see discrepancies by comparing the two.

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