Table 2 Comparison of FLT and CT-based overall values of measured dose–volume histogram-based evaluation factors for esophageal cancer patients

 V ₅ (%)

47.9 ± 15.30

56.1 ± 13.80

−6.31

0.000

 V ₁₀ (%)

33.8 ± 8.90

40.1 ± 9.10

−6.78

0.000

 V ₂₀ (%)

18.2 ± 10.00

23.8 ± 9.70

−4.36

0.003

 V ₃₀ (%)

5.49 ± 4.40

8.9 ± 4.70

−3.17

0.016

 MLD (Gy)

9.82. ± 319.50

10.96 ± 3.02

−4.70

0.002

 V ₃₀ (%)

37.6 ± 19.30

44.1 ± 20.80

−5.97

0.000

 V ₄₀ (%)

20.8 ± 13.50

22.8 ± 14.10

−1.19

0.272

 MHD (Gy)

22.63 ± 10.25

25.37 ± 10.71

−5.92

0.000

D_max of spinal cord (Gy)

44.26 ± 1.36

44.69 ± 0.29

−0.94

0.380