Non-Hodgkin lymphoma response evaluation with MRI texture classification

Table 5 Summary table of texture parameters ranked 1-10 with Fisher and POE+ACC methods according to test subgroup T1-weighted images and imaging timepoints E2 and E3.

T1-WEIGHTED IMAGES	R&R	R&R	Wilcoxon	Wilcoxon
E2-E3 analyses	Repeatability % of total	Reproducibility % of total	Slice thickness <8 mm p	Slice thickness >= 8 mm p
HISTOGRAM PARAMETERS
Variance	11.452	22.145	0.953	0.465
CO-OCCURENCE MATRIX PARAMETERS
Contrast S(2,0)	31.815	28.807	0.139	0.465
Contrast S(3,0)	27.957	40.317	0.051	0.144
Difference variance S(3,0)	26.169	35.250	0.139	0.273
Contrast S(4,0)	29.032	37.330	0.051	0.144
Correlat S(4,0)	25.661	36.025	0.086	0.144
Correlat S(0,4)	21.528	38.249	0.139	0.068
Correlat S(5,0)	23.130	39.697	0.038	0.068
Sum average S(5,0)	55.837	4.961	0.214	0.144
Sum average S(0,5)	44.169	6.142	0.859	0.715
Inverse difference moment S(5,5)	53.397	24.684	0.678	0.465
Difference variance S(5,-5)	50.986	14.473	0.515	0.715
RUN-LENGTH MATRIX PARAMETERS
Grey level nonuniformity, 0°	6.015	43.441	0.066	0.273
Run length nonuniformity, 45°	7.013	31.416	0.139	0.068
Grey level nonuniformity, 45°	4.635	13.324	0.066	0.465
Short run emphasis, 135°	13.062	21.630	0.021	0.144
ABSOLUTE GRADIENT PARAMETERS
Mean	24.582	28.201	0.038	0.144
Kurtosis	60.387	1.194	0.767	1.000
AUTOREGRESSIVE MODEL PARAMETERS
Teta 3	58.511	0.000	0.028	0.465

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.

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