TABLE 4. Results of the Comparison of and 2 on all Chest CT Images (). The DSC, MHD, Sensitivity, Specificity, and Accuracy Were Evaluated and Compared. Mean and Standard Deviation are Summarized.

Method		K = 1	K = 2
DSC	mean	0.9709	0.7323
	std	0.0511	0.1152
MHD	mean	0.5006	1.4270
	std	0.5771	0.5586
Sensitivity	mean	0.9585	0.7755
	std	0.0722	0.0697
Specificity	mean	0.9981	0.7322
	std	0.0012	0.1329
Accuracy	mean	0.9954	0.7321
	std	0.0129	0.1517