Table 4.

Reliability of radiomic features through gray intensity levels GL using ICC

Type	Feature	ICC	95% UCI	95% LCI	Precision
Local	IDM	0.96	0.93	0.98	±2.5%
	ID	0.92	0.90	0.94	±2%
	IMC 2	0.72	0.65	0.90	±12.5%
	Meanb	0.85	0.82	0.94	±6%
	Entropya	0.72	0.75	0.83	±4%
	Summation entropya	0.70	0.67	0.79	±6%
	Difference entropya	0.81	0.67	0.86	±9.5%
Regional	RPC	0.89	0.73	0.91	±9%
	LRE	0.72	0.64	0.87	±11.5%
	SRE	0.80	0.70	0.83	±6.5%

ID, IDM, Inverse Difference, and Inverse Difference Moment; IMC1, 2, Information Correlation Method 1 and 2; RPC, Run Percentage; SRE, Short Run Emphasis; LRE, Long Run Emphasis.

^aCorrected for GL dependence.

^bCorrected for GL and volume dependence.