Increasing the number of arcs improves head and neck volumetric modulated arc therapy plans

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Acknowledgments

For input on the statistical analysis we would like to thank Dr. Alexander Louie.

Declaration of interest: The authors alone are responsible for the content and writing of the paper.

This work has been funded by Varian Medical Systems. The department has a research collaboration with Varian Medical Systems and Dahele, Slotman, and Verbakel have received honoraria/travel support from Varian.

Supplementary material available online

Supplementary Appendix, Figure 1 and Table I to be found online at http://informahealthcare.com/doi/abs/10.3109/0284186X.2014.934968).