Journal of Healthcare Engineering / 2017 / Article / Tab 2

Research Article

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

Table 2

Interobserver agreements between the results of spinal cord segmentation by our algorithm and by three human experts, compared using Jaccard indices. Results in mean ± standard deviation and ranges in parentheses.

Observer 1Observer 2Observer 3

Automatic segmentation0.980 ± 0.0150.979 ± 0.0150.977 ± 0.015
(0.922~1.000)(0.937~1.000)(0.939~1.000)
Observer 10.987 ± 0.0100.987 ± 0.010
(0.955~1.000)(0.957~1.000)
Observer 20.989 ± 0.010
(0.951~1.000)