100 kV

Mono_E 55 keV

Mono+ 55 keV

Normal esophageal display

4.02 ± 0.52

2.75 ± 0.55

4.47 ± 0.54

Tumor contour display

3.89 ± 0.22

2.68 ± 0.52

4.57 ± 0.52

Imaging quality

3.65 ± 0.33

2.70 ± 0.53

4.28 ± 0.41