Table 3 Dose-volume histogram parameters for Plan _CT and Plan _PET-CT

Lungs

 V₅ (%)

46.2 ± 22.3

46.4 ± 22.5

-0.866

0.394

 V₁₀ (%)

37.6 ± 19.1

37.9 ± 19.6

-1.738

0.089

 V₁₅ (%)

26.7 ± 11.9

27.3 ± 15.4

-0.938

0.352

 V₂₀ (%)

18.1 ± 9.6

19.6 ± 10.2

-2.108

0.040

 V₃₀ (%)

13.2 ± 7.4

14.8 ± 8.5

-2.082

0.042

 MLD (Gy)

13.1 ± 4.9

13.9 ± 5.3

-1.918

0.062

Heart

 V₃₀ (%)

20.5 ± 17.4

21.6 ± 19.2

-0.676

0.502

 MHD (Gy)

15.8 ± 9.1

16.7 ± 10.3

-0.659

0.512

Esophagus

 V₅₀ (%)

19.6 ± 15.1

24.5 ± 18.4

-2.326

0.029

 V₅₅ (%)

15.4 ± 13.8

20.7 ± 17.6

-2.366

0.022

Dmax (Gy)

61.2 ± 10.2

61.7 ± 12.1

-0.083

0.936

Spinal cord

 Dmax (Gy)

40.3 ± 10.9

43.2 ± 11.5

-1.892

0.065