Differentiation of Pelvic Osteosarcoma and Ewing Sarcoma Using Radiomic Analysis Based on T2-Weighted Images and Contrast-Enhanced T1-Weighted Images

Table 3

Radiomic features used in the analysis.

Radiomic feature type	References	Radiomic features
Histogram	Sutton [18]	Mean, variance, uniformity, skewness, kurtosis, energy, entropy
Form factor	/	Volume CC, surface, surface volume ratio, compactness, maximum 3D diameter
Haralick and GLCM	Haralick et al. [14]	Entropy, inertia, inverse difference moment
GLRLM	Galloway [15]	Short run emphasis, long run emphasis, gray-level nonuniformity, run-length nonuniformity, run percentage
	Chu et al. [16]	Low gray-level run emphasis, high gray-level run emphasis
	Dasarathy and Holder [17]	Short run low gray-level emphasis, short run high gray-level emphasis, long run low gray-level emphasis, long run high gray-level emphasis

Note: GLCM = gray-level cooccurrence matrix; GLRLM = gray-level run length matrix.