Skip to main content

Table 4 Correlation between tissue stiffness (in kPa) using USWE and PI-RADS classification using MRI in prostate cancer

From: Quantitative ultrasound shear wave elastography (USWE)-measured tissue stiffness correlates with PIRADS scoring of MRI and Gleason score on whole-mount histopathology of prostate cancer: implications for ultrasound image-guided targeting approach

PI-RADS classification*

Stiffness (in Kpa, N = 196)

%

Pearson Chi-square

Degree of freedom

p value

r

κ (linear weighted)

κ (quadratic weighted)

 

< 100 (n = 43)

%

100–130 (n = 47)

%

> 130 (n = 106)

 

PI-RADS 3

4

9.3

2

4.3

10

9.4

 

11.084

0.026

0.231

0.034

0.078

 

PI-RADS 4

17

39.5

7

14.9

21

19.8

       

PI-RADS 5

22

51.2

38

80.8

75

70.8

       
  1. *PI-RADS classification 3 means intermediate probability of clinically significant prostate cancer, 4 means high probability of clinically significant prostate cancer and 5 means very high probability of clinically significant prostate cancer