Table 2 Comparisons of quantitative DWI parameters to identify malignant thyroid nodules

DWI_SD

18.64 ± 10.32

36.23 ± 26.02

1.070(1.026–1.117)

0.002*

0.776

DWI_SIR

1.24 ± 0.54

1.70 ± 0.68

3.427(1.395–8.416)

0.007*

4.526(1.084–18.892)

0.038*

0.758

ADC_SD

124.66 ± 53.37

83.63 ± 42.71

0.979(0.964–0.994)

0.005*

0.720

ADC_SIR

1.35 ± 0.28

1.14 ± 0.31

0.061(0.008–0.489)

0.008*

0.923

ADC_min (× 10⁻³mm²/s)

1.42 ± 0.23

0.88 ± 0.30

 < 0.001 (< 0.001–0.007)

 < 0.001*

 < 0.001 (< 0.001–0.007)

 < 0.001*

0.789

ADC_mean (× 10⁻³mm²/s)

1.96 ± 0.36

1.36 ± 0.43

0.015(0.002–0.115)

 < 0.001*

0.783

ADC_VSD

121.75 ± 65.97

98.26 ± 45.86

0.992(0.982–1.003)

0.143

0.743