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. Author manuscript; available in PMC: 2012 Jul 15.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2010 Jul 7;80(4):1015–1022. doi: 10.1016/j.ijrobp.2010.03.012

Figure 2.

Figure 2

Improvement of IMPT compared with PSPT SBRT for a tumor close to the bronchial tree, esophagus, heart, spinal cord and aorta. (a) Color wash dose distributions shown with corresponding scale; maximum determined by plan with lower PTVmax. In the IMPT images, the gray zone seen inside the PTV represents where the IMPT plan had a dose higher than the scale maximum. (b) Dose-volume histograms. Dotted lines = PSPT plan; solid lines = IMPT SBRT plan.