Automatic Segmentation of Anatomical Structures from CT Scans of Thorax for RTP

Table 6

Comparison of the average symmetric surface distance (mm) for the 10 CT scans of the 10 cancer patients.

OARs	Method
	Our method	de Nunzio et al. [7]	Yim and Hong [10]	Wang et al. [11]	Banik et al. [27]
Left lung	0.73 ± 0.36	0.90 ± 0.51	—	—	—
Right lung	0.77 ± 0.48	0.93 ± 0.71	—	—	—
Lungs (together)	0.63 ± 0.32	—	0.94 ± 0.57	0.99 ± 0.73	—
Trachea/main bronchi	0.89 ± 0.72	0.50 ± 0.23	0.55 ± 0.31	0.71 ± 0.22	—
Spinal canal	0.57 ± 0.41	—	—	—	0.52 ± 0.39