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. Author manuscript; available in PMC: 2020 Aug 23.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2019 Jan 23;104(1):177–187. doi: 10.1016/j.ijrobp.2019.01.073

Fig. 6.

Fig. 6.

Treatment planning for a brain tumor, reproduced with permission from Martinez-Rovira et al.75 Proton GRID allows for more precise dosing to spare normal tissue in sensitive organs at risk.