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Median doses in Gy for original VMAT plans, cardiac-optimized VMAT plans, and IMPT plans. †Statistically significant difference between original and cardiac-optimized VMAT plans. ‡Statistically significant difference between cardiac-optimized VMAT and IMPT plans. Abbreviations: CTV = clinical target volume; Dmax = maximum dose; Dmean = mean dose; IMPT = intensity modulated proton therapy; VMAT = volumetric modulated arc therapy.
