Comparisons of OAR dose distribution
palate
The dose distribution of the spinal cord, larynx, and bilateral parotid glands was not statistically significant in patients from the three groups. However, the three groups exhibited a substantial difference in the Dmax and Dmean of the upper cheek, hard palate, and soft palate (Table Comparisons of dose-volume parameters of major organs at risk for IMRT in the three groupsComparisons of OAR dose distribution: **