Table 2 Distribution of histogram parameters on unenhanced CT between groups

Mean

14.9 ± 4.3

17.4 ± 7.2

0.061

Median

30.0 ± 18.1

-2.6 ± 37.3

< 0.001

Minimum

-104.2 ± 122.9

-113.9 ± 87.4

0.001

Maximum

64.5 ± 24.1

43.9 ± 32.6

0.075

Range

171.2 ± 125.8

157.9 ± 83.9

0.001

Variance

535.1 ± 704.1

667.6 ± 965.1

0.510

10th Percentile

3.1 ± 23.1

-34.8 ± 43.5

< 0.001

90th Percentile

45.9 ± 16.8

19.1 ± 31.7

< 0.001

Kurtosis

13.2 ± 17.3

7.0 ± 7.6

< 0.001

Skewness

-1.91 ± 1.67

-1.1 ± 1.2

0.001

Uniformity

0.42 ± 0.08

0.37 ± 0.10

0.029

Energy (× 10⁶)

1.5 ± 1.5

1.3 ± 1.8

0.068

Entropy

1.58 ± 0.29

1.8 ± 0.4

0.008