Table 2 Comparisons of histogram parameters of ADC images, FS-T2WI, DWI, DCE-T1WI_2min and DCE-T1WI_7min between the two groups, respectively

ADC_Mean

174.790 ± 26.849

164.122 ± 31.669

0.234

0.229

ADC_Minimum

138.154 ± 37.446

108.842 ± 38.312

0.022

0.018

ADC_Maximum

216.240 ± 33.286

218.263 ± 29.790

0.836

0.833

ADC_Skewness

0.097 ± 0.804

0.147 ± 0.858

0.844

0.842

ADC_kurtosis

0.797 ± 1.553

0.988 ± 1.598

0.693

0.688

^a FS-T2WI_Mean

131.680 (95.702,160.844)

147.528 (124.366,154.154)

0.387

0.568

FS-T2WI_Minimum

50.600 ± 35.344

54.263 ± 32.527

0.726

0.722

^a FS-T2WI_Maximum

234.000 (175.500,255.000)

244.000 (222.000, 255.000)

0.259

0.264

FS-T2WI_Skewness

0.054 ± 0.571

0.228 ± 0.516

0.304

0.298

^a FS-T2WI_Kurtosis

0.372 (0.097,1.701)

0.110(−0.318,0.918)

0.110

0.121

DWI_Mean

166.476 ± 30.833

160.400 ± 36.953

0.556

0.549

DWI_Minimum

93.640 ± 34.946

100.053 ± 33.766

0.544

0.538

^a DWI_Maximum

245.000 (229.500,247.500)

245.000 (229.000,252.000)

0.601

0.893

^a DWI_Skewness

−0.254(−0.441,0.385)

0.192(− 0.151,.443)

0.132

0.405

^a DWI_Kurtosis

−0.152(− 0.511,0.503)

−0.102(− 0.523,0.463)

0.972

0.704

(DCE-T1WI_2min)_Mean

132.006 ± 35.1049

125.593 ± 36.500

0.558

0.552

^a (DCE-T1WI_2min)_Minimum

58.000 (45.000,91.500)

36.000 (25.000,50.000)

0.048

0.128

(DCE-T1WI_2min)_Maximum

200.320 ± 32.983

202.526 ± 39.141

0.840

0.838

(DCE-T1WI_2min)_Skewness

0.0409 ± 0.56225

−0.0359 ± 0.79452

0.709

0.704

^a (DCE-T1WI_2min)_Kurtosis

−0.041(− 0.380,0.813)

−0.018(− 0.706,0.789)

0.731

0.493

(DCE-T1WI_7min)_Mean

179.321 ± 35.092

166.457 ± 41.996

0.275

0.270

(DCE-T1WI_7min)_Minimum

91.080 ± 56.3116

76.632 ± 52.2007

0.389

0.383

^a (DCE-T1WI_7min)_Maximum

243.000 (232.000,250.500)

232.000 (214.000,241.000)

0.037

0.145

(DCE-T1WI_7min)_Skewness

−0.647 ± 0.708

−0.793 ± 0.811

0.527

0.521

^a (DCE-T1WI_7min)_Kurtosis

0.691(−0.229,1.932)

1.210 (0.285,2.972)

0.420

0.414

^a (DCE-T1WI_7min)_Mean

of tumor solid region

200.935 (173.433,211.289)

184.417 (150.868,206.929)

0.260

0.224

(DCE-T1WI_7min)_Minimum of tumor solid region

142.080 ± 45.118

123.000 ± 41.919

0.160

0.157

^a (DCE-T1WI_7min)_Maximum of tumor solid region

240.000 (231.500,247.000)

209.000 (231.000,238.000)

0.024

0.028

(DCE-T1WI_7min)_Skewness of tumor solid region

−0.023 ± 0.6125

−0.282 ± 0.919

0.268

0.263

^a (DCE-T1WI_7min)_Kurtosis of tumor solid region

0.161(−0.189,0.620)

1.178 (0.507,2.677)

0.004

0.009