Method DSC (Mean±SD) HD (Mean±SD) Our Approach 0.868±0.03 5.61±2.12 mm MAP [24] 0.834±0.07 6.67±1.84 mm Liu et al. [35] 0.810±0.05 9.07±1.64 mm

Table 1: Segmentation accuracies for the proposed nonnegative matrix factorization (NMF)-based approach and the compared approaches using the Dice similarity coefficient (DSC) and the Hausdorff distance (HD) metrics. Note that “SD” stands for standard deviation.