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Table 3 The deviations in target volume HI and CI between the RDD and the plan value

From: Comparison of 3D anatomical dose verification and 2D phantom dose verification of IMRT/VMAT treatments for nasopharyngeal carcinoma

Parameters PTVnx (HI) PTV1 (CI) PTV2 (CI)
Δ (%) [-15.62,19.34] [-32.45, 13.97] [-6.93, 2.73]
δ - (%) -0.94 ± 9.24 -3.21 ± 10.53 -1.92 ± 3.00
P 0.653 0.189 0.012
  1. Note: The relative deviation between the RDD and the Plan is expressed as Δ = RDD - Plan Plan × 100 % (RDD and Plan are the computed values from the reconstructed dose distribution and the therapy plan, respectively; Δ represents the interval range of the relative deviation). δ - represents the mean value and standard deviation of the relative deviation between the RDD and Plan.