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. 2017 Feb 27;64(2):125–130. doi: 10.1002/jmrs.203

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© 2017 The Authors. Journal of Medical Radiation Sciences published by John Wiley & Sons Australia, Ltd on behalf of Australian Society of Medical Imaging and Radiation Therapy and New Zealand Institute of Medical Radiation Technology.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Typical dose distribution for intensity modulated radiation therapy and VMAT plans aimed at sparing the cSM gland on sample axial cross‐section. The planned target volume (PTV) boost volume is delineated in red, the PTV elect is delineated in blue. The submandibular glands are outlined in pink. The dose to the cSM was reduced to a mean dose of under 39 Gy whilst preserving target coverage. The isodose lines highlight the improved conformity on the VMAT plan, with the yellow 45 Gy and light purple 35 Gy isodose closely following target volume, also lowering the mean dose to the structure. Purple – 73.5 Gy, Red – 70 Gy, Cyan – 66.5 Gy, Light Green – 53.2 Gy, Yellow – 45 Gy, Light Purple – 35 Gy.