Table 4.

3D matching features. Number and percentage of matching stable features obtained with 3D contour-focused segmentation, as well as number and percentage of matching stable features with good (ICC ≥ 0.75) overall interobserver reliability across different imaging modalities and MRI sequences, grouped according to feature class and image type. GLCM, gray-level cooccurrence matrix; GLDM, gray-level dependence matrix; GLRLM, gray-level run length matrix; GLSZM, gray-level size zone matrix; ICC, intraclass correlation coefficient; LoG, Laplacian of Gaussian

3D	Feature class	Image type	Total features (n)	Matching features (n)	Matching features (%)	ICC ≥ 0.75 (n)	ICC ≥ 0.75 (%)
CT + MRI (T1w + T2w)	First order	LoG	72	57	79.17	0	0
		Original	18	10	55.56	0	0
		Wavelet	144	97	67.36	0	0
	GLCM	LoG	88	75	85.23	4	5.33
		Original	22	16	72.73	0	0
		Wavelet	176	147	83.52	6	4.08
	GLDM	LoG	56	37	66.07	5	13.51
		Original	14	8	57.14	0	0
		Wavelet	112	72	64.29	6	8.33
	GLRLM	LoG	64	48	75.00	1	2.08
		Original	16	7	43.75	0	0
		Wavelet	128	81	63.28	3	3.70
	GLSZM	LoG	64	34	53.13	0	0
		Original	16	5	31.25	1	20.00
		Wavelet	128	72	56.25	6	8.33
	Shape	Original	14	12	85.71	11	91.67
	Overall		1132	778	68.73	43	5.53
MRI (T1w + T2w)	First order	LoG	72	65	90.28	8	12.31
		Original	18	12	66.67	0	0
		Wavelet	144	116	80.56	14	12.07
	GLCM	LoG	88	75	85.23	10	13.33
		Original	22	16	72.73	2	12.50
		Wavelet	176	149	84.66	16	10.74
	GLDM	LoG	56	42	75.00	6	14.29
		Original	14	9	64.29	1	11.11
		Wavelet	112	83	74.11	10	12.05
	GLRLM	LoG	64	50	78.13	3	6.00
		Original	16	9	56.25	1	11.11
		Wavelet	128	96	75.00	10	10.42
	GLSZM	LoG	64	47	73.44	2	4.26
		Original	16	10	62.50	0	0
		Wavelet	128	92	71.88	6	6.52
	Shape	Original	14	14	100.00	12	85.71
	Overall		1132	885	78.18	101	11.41