Control group

100 kV

Experimental group 100 kV

Experimental group Mono+ 55 kV

Renal Artery display

4.47 ± 0.56

3.98 ± 0.56

4.36 ± 0.56

Tumor contour

3.97 ± 0.54

3.40 ± 0.78

4.05 ± 0.37

Image quality

4.18 ± 0.42

3.67 ± 0.68

4.16 ± 0.63