Table 4.
Correlation between absolute differences in cartilage thickness and measures of agreement between U-Net and manual segmentations
| DSC | VOE | HD | ASSD | |
|---|---|---|---|---|
| corFLASH | ||||
| MT | − 0.61 | 0.61 | − 0.15 | 0.44 |
| cMF | − 0.49 | 0.50 | − 0.17 | 0.26 |
| LT | − 0.50 | 0.50 | − 0.29 | 0.38 |
| cLF | − 0.32 | 0.32 | − 0.19 | 0.14 |
| sagDESS | ||||
| MT | − 0.09 | 0.10 | − 0.02 | − 0.01 |
| cMF | − 0.42 | 0.43 | 0.10 | 0.33 |
| LT | − 0.58 | 0.58 | − 0.35 | 0.00 |
| cLF | − 0.42 | 0.42 | − 0.38 | 0.05 |
Absolute cartilage thickness differences between U-Net-based, automated and manual segmentations calculated from coronal FLASH (corFLASH) and sagittal DESS (sagDESS) MRI acquired at the OAI baseline visit
MT/LT medial/lateral tibia, cMF/cLF central medial/lateral femoral condyle, DSC dice similarity coefficient, HD Hausdorff distance, ASSD average symmetric surface distance
Bold face indicates significant correlation coefficients (p < 0.05)