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

Table 2

Comparison of the average symmetric surface distance (mm) for the 10 CT scans from the LIDC.

OARs	Method
	Our method	de Nunzio et al. [7]	Yim and Hong [10]	Wang et al. [11]	Banik et al. [27]
Left lung	0.31 ± 0.10	0.44 ± 0.19	—	—	—
Right lung	0.27 ± 0.17	0.34 ± 0.12	—	—	—
Lungs (together)	0.29 ± 0.03	—	0.32 ± 0.11	0.34 ± 0.20	—
Trachea/main bronchi	0.34 ± 0.14	0.36 ± 0.05	0.39 ± 0.13	0.59 ± 0.15	—
Spinal canal	0.28 ± 0.21	—	—	—	0.35 ± 0.09