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Table 9 Summary table of texture parameters ranked 1-10 with Fisher and POE+ACC methods according to test subgroup T2-weighted images and imaging timepoints E1 and E3.

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

T2-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 14.090 24.380 0.003 0.130
CO-OCCURENCE MATRIX PARAMETERS     
Contrast S(2,0) 19.563 41.264 0.011 0.001
Contrast S(2,2) 23.139 43.325 0.006 <0,001
Contrast S(3,0) 22.618 45.195 0.009 0.001
Correlation S(3,0) 21.555 40.965 0.007 0.001
Sum average S(3,0) 28.935 19.345 0.033 0.035
Contrast S(3,3) 23.282 48.345 0.006 <0,001
Correlation S(3,3) 22.095 44.779 0.007 <0,001
Sum average S(3,-3) 20.384 0.353 0.087 0.017
Contrast S(4,0) 26.599 44.458 0.007 0.001
Contrast S(4,4) 31.083 41.015 0.009 <0,001
Correlation S(4,4) 23.823 42.301 0.007 <0,001
Sum of squares S(4,4) 82.108 0.686 0.345 0.687
Correlation S(5,-5) 39.239 25.122 0.023 0.035
RUN-LENGTH MATRIX PARAMETERS     
Short run emphasis, 90° 10.659 12.516 0.001 <0,001
Grey level nonuniformity, 45° 15.649 11.529 0.001 <0,001
ABSOLUTE GRADIENT PARAMETERS     
Mean 18.036 44.271 0.002 0.001
Skewness 63.599 15.598 0.046 0.007
  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.