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. 2009 Apr 30;10(2):92–103. doi: 10.1120/jacmp.v10i2.2847

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© 2009 The Authors.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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An example of a patient with emphysema. Fig.3(a) original treatment planning CT image (lung window); (b) treatment planning CT image of the same slice as with the 5 bulk densities applied; (c) treatment planning CT image of the same slice as Figs. 3(a) and (b) where the individual average density is applied to the lung; (d) DVH comparing the PTV and lung of the 3 plans.