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Dosimetric comparison of treatment plans using all three modalities for a patient with distal esophageal cancer. VMAT, Volumetric Arc Therapy; PSPT, Passive Scattering Proton Therapy; IMPT, Intensity Modulated Proton Therapy; MHD, Mean Heart Dose; MLuD, Mean Lung Dose; MLiD, Mean Liver Dose.
