Table 3.

Index of textural features in global, local, and regional areas.

Feature Family	Features
Intensity histogram	Maximum standard uptake value (SUVmax)
	Mean standard uptake value (SUVmean)
	Standard deviation (SUV_SD)
	Total lesion glycolysis (TLG)
	Metabolic tumor volume (MTV)
	1st entropy
Gray-level co-occurrence matrix (GLCM)	Energy
	Contrast
	Entropy
	Homogeneity
	Dissimilarity
Neighboring gray-level dependence matrix (NGLDM)	Contrast
	Coarseness
	Busyness
	Small number emphasis (SNE)
Gray-level run length matrix (GLRLM)	Short run emphasis (SRE)
	Long run emphasis (LRE)
	Gray-level non-uniformity (GLNU)
	Run length non-uniformity (RLNU)
	Low gray-level run emphasis (SRLGE)
	High gray-level run emphasis (SGHGE)
Gray-level size zone matrix (GLSZM)	Small zone emphasis (SAE)
	Large zone emphasis (LAE)
	Gray-level non-uniformity (GLN)
	Zone size non-uniformity (SZN)
	Low gray-level zone emphasis (LGLZE)
	High gray level zone emphasis (HGLZE)