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. Author manuscript; available in PMC: 2024 Mar 1.

Published in final edited form as: CA Cancer J Clin. 2022 Oct 28;73(2):164–197. doi: 10.3322/caac.21758

Figure 1. — Radiation dosimetry with standard versus reduced PORT doses. Figure 1a illustrates radiation dosimetry with SOC 60Gy (pink 6000 line) PORT to the neck. Figure 1b illustrates radiation dosimetry with reduced-dose 50Gy PORT to the neck (magenta 5000 line). IMRT can limit medium/high dose scatter to central swallowing structures like the esophagus (pink). There is no notable difference in medium/high dose spillover of 45Gy (blue 4500 line) or 40Gy (teal 4000 line) between 60Gy and 50Gy dose prescriptions.

Figure 1. — Radiation dosimetry with standard versus reduced PORT doses. Figure 1a illustrates radiation dosimetry with SOC 60Gy (pink 6000 line) PORT to the neck. Figure 1b illustrates radiation dosimetry with reduced-dose 50Gy PORT to the neck (magenta 5000 line). IMRT can limit medium/high dose scatter to central swallowing structures like the esophagus (pink). There is no notable difference in medium/high dose spillover of 45Gy (blue 4500 line) or 40Gy (teal 4000 line) between 60Gy and 50Gy dose prescriptions.