Table II.
Evaluation of the average segmentation results on ACDC dataset for RV blood-pool, LV myocardium, and LV blood-pool (mean value reported), obtained from all networks against the provided reference segmentation.
| End diastole (ED) |
End systole (ES) |
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| SN | DMR SN | USN | DMR USN | UNet | DMR UNet | SN | DMR SN | USN | DMR USN | UNet | DMR UNet | |
| (a) Evaluation of Average (across all heart chambers) Segmentation Results | ||||||||||||
| Dice (%) | 91.1 | 91.7** | 91.5 | 92.0** | 91.6 | 92.2** | 87.3 | 88.0* | 87.7 | 88.7** | 87.2 | 88.8* |
| Jaccard (%) | 84.0 | 85.1** | 84.7 | 85.5** | 85.0 | 85.9** | 78.1 | 79.3* | 78.7 | 80.3** | 78.3 | 80.4* |
| MSD (mm) | 0.55 | 0.53* | 0.58 | 0.52* | 0.54 | 0.53* | 0.92 | 0.85 | 0.92 | 0.84 | 1.08 | 0.83 |
| HD (mm) | 10.26 | 9.87 | 10.26 | 9.67 | 10.03 | 9.52 | 11.33 | 10.31* | 11.66 | 10.91 | 12.61 | 10.96* |
| Correlation coefficient |
Bias+LOA |
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| SN | DMR SN | USN | DMR USN | UNet | DMR UNet | SN | DMR SN | USN | DMR USN | UNet | DMR UNet | |
| (b) Evaluation of the Clinical Indices | ||||||||||||
| LV EF | 0.939 | 0.947 | 0.944 | 0.970 | 0.962 | 0.963 | 1.00 (13.15) | 0.31 (12.44) | 0.58 (12.57) | −0.42 (9.24) | 0.31 (10.41) | 0.40 (10.40) |
| RV EF | 0.874 | 0.871 | 0.866 | 0.895 | 0.856 | 0.870 | 1.04 (17.40) | 1.77 (17.34) | 0.85 (17.40) | 0.38 (15.42) | 0.09 (18.94) | 0.29 (18.30) |
| Myo Mass | 0.948 | 0.970 | 0.958 | 0.973 | 0.933 | 0.978 | 3.10 (32.94) | −0.43 (25.17) | 0.35 (29.65) | 0.21 (23.89) | 2.85 (37.39) | 0.80 (21.75) |
The statistical significance of the results for DM regularized model compared against the baseline model are represented by * and ** for P-values < 0.05 and 0.005, respectively. Also shown are the clinical indices evaluated for each heart chamber. The best performing model for each metric has been highlighted in bold. SN: SegNet, USN: USegNet, UNet: UNet.
Best performing model for the ED and ES phases are shown in bold case.