While the dose homogeneity scores favor the HDPs over the APs, the trend is largely reversed for OAR sparing. Both the cord and the brain stem maximum dose (single voxel) PQM scores are statistically significantly higher (meaning lower dose) for the APs (Table 3). The parotid mean dose score is also higher for the APs with high statistical significance (p<0.001). The last OAR with a statistically significant advantage for the APs was the inferior pharyngeal constrictor.