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Table 2 PTV dose coverage

From: Intensity-modulated radiotherapy versus three-dimensional conformal radiotherapy for stage I-II natural killer/T-cell lymphoma nasal type: dosimetric and clinical results

 

3DCRT

IMRT

p value

Dmax(Gy)

59.25±6.71

57.18±2.17

0.05*

Dmean(Gy)

51.73±1.01

52.06±1.14

0.14

V95%(%)

85.40±27.04

96.17±13.36

0.02*

V90%(%)

98.70±3.32

98.99±1.81

0.60

V105%(%)

28.53±19.09

44.44±21.11

<0.01*

V110%(%)

7.14±7.92

4.19±5.10

0.04

HI

0.20±0.11

0.10±0.03

0.05*

CI

1.28±0.18

1.08±0.16

0.07

  1. *variable with significant difference.
  2. D max maximum dose, D mean mean dose, V x% percent of volume receives x% of the prescription, CI conformity index, HI homogeneity index.