Table 2 Histogram distribution parameters of ccRCC and pRCC

Arterial– Kurtosis (Q1, Q3)

−0.08 (−0.56, 0.94)

2.03 (0.34, 2.91)

<0.01

Skewness

0.29 (−0.12, 0.72)

0.74 (0.5, 1.31)

<0.01

Standard Deviation

40.25 (32.7, 51)

24.1 (19.4, 30.2)

<0.01

Interquartile Range

262.5 (210, 336)

166 (154, 258)

<0.01

Nephrographic – Kurtosis (Q1, Q3)

0.11 (−0.1, 0.6)

1.69 (0.39, 3.59)

<0.01

Skewness

0.13 (−0.33, 0.64)

1.06 (0.56, 1.37)

<0.01

Standard Deviation

38.3 (34.3, 44.9)

31.8 (27.4, 34.1)

<0.01

Interquartile Range

249.5 (226, 280)

230 (210, 266)

0.12

Excretory – Kurtosis (Q1, Q3)

2.15 (0.53, 16.21)

0.86 (0.19, 2.35)

0.22

Skewness

0.76 (0.04, 3.36)

0.61 (0.27, 1.42)

0.83

Standard Deviation

24.6 (20.7, 34.5)

24.5 (22.2, 25.9)

0.75

Interquartile Range

232.5 (159, 528)

163 (160, 184)

0.12