Table 4.

Normal tissue sparing in sum plan

Values are mean ± standard deviation. A p-value < 0.05 is considered significant. The paired t-test was used to determine whether there was a statistically significant difference.

IMRT, intensity-modulated radiotherapy; PTV_P, primary planning target volume; PTV_B, boost planning target volume; V_{n Gy}, volume or organ receiving n Gy; D_mean, mean dose; NS, not significant; p-value (x vs. y), p-value between x-MV and y-MV IMRT technique.

^a)6-MV IMRT significantly better than compared technique, ^b)10-MV IMRT significantly better than compared technique, ^c)15-MV IMRT significantly better than compared technique.