Automatic Detection of 2D and 3D Lung Nodules in Chest Spiral CT Scans

Table 1

Detection rate for different types of abnormalities (TPNs: the nodules determined by a radiologist).

Type of lung; nodules	True detecting	False detecting	True detecting	False detecting
	nodules before	nodules before	nodules after	nodules after
	removing FPNs	removing FPNs	removing FPNs	removing FPNs
Lung wall	28 : 29	8	27 : 29	2
Calcified	46 : 49	4	46 : 49	1
Non-calcified	12 : 18	5	12 : 18	3
Cavity	8 : 11	7	8 : 11	1
Small	17 : 23	25	15 : 23	5