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Table 1 Results of contrast, homogeneity, and SNR analyses

From: Reconstruction of the treatment area by use of sinogram in helical tomotherapy

Reconstruction

Contrast

Homogeneity

SNR @ A

SNR @ B

SNR @ C

SNR @ D

Full FOV

6.17

0.99-1.02

19.61

2.98

16.97

19.91

Masking only

1.79

0.83-1.15

18.13

16.28

9.33

55.50

Full corrections

1.89

0.91-1.06

20.47

16.70

10.53

44.44

  1. The contrast was evaluated by the ratio of the mean value of regions A, C, and D to that of region B in Figure 3. The homogeneity was evaluated by the min-max values of the mean value in the regions A, C, and D.