Table 7.
Results of Varying Generator Network Depth: Number of Minimum Feature Maps. The influence of starting with different numbers of minimum feature channel maps in the generator networks of both the cGAN and U-Net was assessed. Highest DSCs achieved for each tissue are highlighted grey and in bold.
| Generator Network Depth Results – Number of Minimum Feature Channel Maps | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| cGAN | ||||||||||
| Feature Maps | F Bone | T Bone | P Bone | F Cartilage | T Cartilage | P Cartilage | VM Muscle | GM Muscle | ACL | PCL |
| 16 | 0.774 ± 0.059 | 0.903 ± 0.040 | 0.858 ± 0.003 | 0.547 ± 0.236 | 0.473 ± 0.269 | 0.771 ± 0.070 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.000 ± 0.000 |
| 32 | 0.899 ± 0.004 | 0.937 ± 0.001 | 0.875 ± 0.027 | 0.750 ± 0.028 | 0.720 ± 0.038 | 0.831 ± 0.030 | 0.414 ± 0.260 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.000 ± 0.000 |
| 64 | 0.918 ± 0.011 | 0.948 ± 0.018 | 0.928 ± 0.002 | 0.812 ± 0.002 | 0.748 ± 0.042 | 0.863 ± 0.043 | 0.113 ± 0.085 | 0.000 ± 0.000 | 0.577 ± 0.020 | 0.073 ± 0.103 |
| 128 | 0.925 ± 0.006 | 0.935 ± 0.021 | 0.831 ± 0.032 | 0.805 ± 0.010 | 0.773 ± 0.081 | 0.784 ± 0.061 | 0.341 ± 0.256 | 0.000 ± 0.000 | 0.336 ± 0.219 | 0.011 ± 0.016 |
| U-Net | ||||||||||
| Feature Maps | F Bone | T Bone | P Bone | F Cartilage | T Cartilage | P Cartilage | VM Muscle | GM Muscle | ACL | PCL |
| 16 | 0.966 ± 0.000 | 0.950 ± 0.021 | 0.912 ± 0.028 | 0.868 ± 0.011 | 0.795 ± 0.001 | 0.864 ± 0.028 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.202 ± 0.110 |
| 32 | 0.969 ± 0.006 | 0.946 ± 0.016 | 0.914 ± 0.005 | 0.875 ± 0.026 | 0.795 ± 0.051 | 0.878 ± 0.032 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.453 ± 0.039 |
| 64 | 0.972 ± 0.006 | 0.960 ± 0.001 | 0.941 ± 0.010 | 0.886 ± 0.007 | 0.834 ± 0.010 | 0.890 ± 0.034 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.643 ± 0.153 | 0.641 ± 0.008 |
| 128 | 0.968 ± 0.006 | 0.960 ± 0.004 | 0.929 ± 0.014 | 0.884 ± 0.022 | 0.823 ± 0.010 | 0.897 ± 0.013 | 0.000 ± 0.000 | 0.000 ± 0.000 | 0.645 ± 0.053 | 0.597 ± 0.025 |
Training and testing were performed on the AMROA training and testing datasets, respectively.
DSCs are presented as mean ± standard deviation.
Abbreviations: F Bone – femoral bone, T Bone – tibial bone, P Bone – patellar bone, F Cartilage – femoral cartilage, T Cartilage – tibial cartilage, P Cartilage – patellar cartilage, VM Muscle - vastus medialis muscle, GM Muscle – medial head of gastrocnemius medialis muscle, ACL – anterior cruciate ligament, PCL – posterior cruciate ligament, DSC - Sørensen–Dice similarity coefficient.