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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Acta Oncol. 2010 Oct;49(7):964–971. doi: 10.3109/0284186X.2010.498440

Figure 2.

Figure 2

Quality volume histograms for: (upper left) all the number of dose prescription levels used (with default settings of the optimisation paramenters); 11 levels (solid line), 9 levels (dashed line), 7 levels (dotted line), 5 levels (dash-dot line), 3 levels (thin solid line), (lower left) 11 dose prescription levels for one (dotted line) and two (solid line) arcs, (lower right) 11 dose prescription levels for MLC width 2.5 mm (solid line) and 5 mm (dotted line), (upper right) 11 dose prescription levels for collimator rotations 45(315) (solid line), 30(330) (dashed line), 15(345) (dotted line) and 0(0) (dash-dot line).