Journal of Healthcare Engineering / 2017 / Article / Tab 3

Research Article

Atlas-Free Cervical Spinal Cord Segmentation on Midsagittal T2-Weighted Magnetic Resonance Images

Table 3

Interobserver agreements between the results of spinal cord edge detection by our algorithm and by three human experts, compared using Hausdorff distances. Results in mean ± standard deviation and ranges in parentheses.

AnteriorPosterior
Observer 1Observer 2Observer 3Observer 1Observer 2Observer 3

Automatic segmentation1.51 ± 0.741.51 ± 0.661.54 ± 0.681.50 ± 0.761.44 ± 0.781.58 ± 0.79
(0~3.61)(0~3)(0~3.16)(0~4)(0~5.83)(0~5.10)
Observer 11.02 ± 0.431.01 ± 0.381.05 ± 0.551.05 ± 0.44
(0~2.24)(0~2)(0~3.61)(0~3)
Observer 20.97 ± 0.391.01 ± 0.57
(0~2)(0~3)