Table 2.

Segmentation accuracy of the developed method for the final segmentation (after modified convexity and mathematical morphology), for the coarse segmentation (anatomy-driven) and difference in the segmentation accuracy of the two methods

		Final segmentation			Coarse segmentation			Difference
		DSC	dmean	drms	DSC	dmean	drms	∆DSC	∆dmean	∆drms
CT scans having abnormalities	Mean	98.05	1.57	3.26	91.19	6.06	10.34	6.86	−4.49	−7.08
	SD	5.37	2.55	5.47	10.4	5.18	7.64	−5.03	−2.63	−2.17
	Min	63.29	0.3	0.42	48.85	0.63	1.09	14.44	−0.33	−0.67
	Max	99.65	18.04	37	98.56	29.29	52.88	1.09	−11.25	−15.88
	Median	98.43	0.74	1.35	93.42	5.2	8.45	5.01	−4.46	−7.1
Normal	Mean	99.18	1.21	2.26	98.93	3.15	7.78	0.25	−1.94	−5.52
	SD	5.16	4.62	5.26	9.76	5.87	9.11	−4.6	−1.25	−3.85
	Min	60.02	0.19	0.34	47.14	0.39	0.37	12.88	−0.2	−0.03
	Max	99.59	21.66	43.07	99.47	81.18	110	0.12	−59.52	−66.93
	Median	99.47	0.52	0.97	96.36	3.53	6.09	3.11	−3.01	−5.12
Overall	Mean	98.62	1.39	2.76	95.06	4.61	9.06	3.56	−3.22	−6.3
	SD	5.27	3.59	5.37	10.08	5.53	8.38	−4.82	−1.94	−3.01
	Min	61.66	0.25	0.38	48	0.51	0.73	13.66	−0.27	−0.35
	Max	99.62	19.85	40.04	99.02	55.24	81.44	0.61	−35.39	−41.41
	Median	98.95	0.63	1.16	94.89	4.37	7.27	4.06	−3.74	−6.11

Results are given for disease pattern, normal lungs, and overall slices (DSC is given in % and shape metrics in mm)