A Comparative Study of 2 Different Segmentation Methods of ADC Histogram for Differentiation Genetic Subtypes in Lower-Grade Diffuse Gliomas

Table 6

Comparison of ADC histogram parameters of the two different ROIs between the IDH^mut/1p19q⁻ group and IDH^mut/1p19q⁺ group.

Values (×10^-6 mm^2/s)	IDH^mut/1p19q^+,	IDH^mut/1p19q^−,	Test values	value
ADCmean^1			3.048^a	0.006
ADCmean^2			3.268^a	0.003
ADCmin^1			1.860^a	0.071
ADCmin^2			1.941^a	0.060
P5 ADC^1			2.888^a	0.008
P5 ADC^2			2.890^a	0.008
P10 ADC^1			3.150^a	0.005
P10 ADC^2			3.066^a	0.006
P25 ADC^1			3.397^a	0.003
P25 ADC^2			3.329^a	0.003
P50 ADC^1			3.474^a	0.002
P50 ADC^2			3.487^a	0.002
P75 ADC^1			2.862^a	0.009
P75 ADC^2			3.252^a	0.003
P90 ADC^1			2.088^a	0.048
P90 ADC^2			2.786^a	0.010
P95 ADC^1			1.300^a	0.201
P95 ADC^2			2.494^a	0.019
ADCmax^1			0.654^a	0.517
ADCmax^2			1.681^a	0.101
ADCmode^1		1158.50 (1093.50, 1329.88)	-3.059^b	0.002
ADCmode^2		1170.50 (1093.50, 1328.25)	-3.086^b	0.002
Skewness^1	-0.200 (-0.446, 0.912)		-2.644^b	0.007
Skewness^2	-0.227 (-0.526, 0.183)	0.378 (0.231, 0.642)	-2.093^b	<0.001
Kurtosis^1	-0.342 (-0.518, 1.988)	1.191 (0.242, 2.290)	-1.930^b	0.054
Kurtosis^2	-0.354 (-0.482, 0.080)	0.102 (-0.309, 0.328)	-3.453^b	0.037
StDev^1	288.203 (215.736, 366.088)		-0.214^b	0.828
StDev^2			1.932^a	0.061
Inhomogenity^1	0.172 (0.155, 0.244)	0.197 (0.165, 0.251)	-1.142^b	0.253
Inhomogenity^2			-0.346^a	0.731
Range^1		1939.25 (1391.00, 2733.13)	-0.381^b	0.703
Range^2			1.089^a	0.283
Entropy^1			0.467^a	0.643
Entropy^2			0.527^a	0.601

¹ROI-1; ²ROI-2; ^a value; ^b value.