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Table 6 Summary table of texture parameters ranked 1-10 with Fisher and POE+ACC methods according to test subgroup T1-weighted images and imaging timepoints E1 and E3.

From: Non-Hodgkin lymphoma response evaluation with MRI texture classification

T1-WEIGHTED IMAGES

R&R

R&R

Wilcoxon

Wilcoxon

E1-E3 analyses

Repeatability % of total

Reproducibility % of total

Slice thickness <8 mm

p

Slice thickness >= 8 mm

p

HISTOGRAM PARAMETERS

    

MinNorm

24.793

2.445

0.504

0.465

Percentile, 1%

15.349

0.069

0.964

0.715

CO-OCCURENCE MATRIX PARAMETERS

    

Inverse difference moment S(2,0)

20.950

29.298

0.008

0.068

Contrast S(3,0)

27.957

40.317

0.008

0.068

Correlation S(3,0)

24.569

38.395

0.021

0.068

Difference variance S(3,0)

26.169

35.250

0.021

0.068

Contrast S(4,0)

29.032

37.330

0.010

0.068

Correlation S(4,0)

25.661

36.025

0.021

0.068

Inverse difference moment S(4,0)

19.088

34.553

0.004

0.068

Correlation S(4,4)

17.730

40.414

0.021

0.068

Sum of squares S(4,-4)

52.253

2.218

0.859

1.000

Correlation S(5,0)

23.130

39.697

0.016

0.068

Inverse difference moment S(5,0)

23.111

37.188

0.013

0.068

Sum of squares S(0,5)

66.827

1.190

0.041

0.715

Sum of squares S(5,5)

64.191

3.647

0.477

0.715

RUN-LENGTH MATRIX PARAMETERS

    

Grey level nonuniformity, 45°

4.635

13.324

0.003

0.068

Grey level nonuniformity, 135°

4.734

39.630

0.003

0.068

Fraction of image in runs, 135°

13.014

23.544

0.003

0.068

  1. Texture parameters are given in rows. In the columns R&R repeatability and reproducibility of total, and Wilcoxon test for fat saturation series grouped with image slice thickness less than 8 mm, and 8 mm or thicker.