TABLE IV. Experimental Results for Ct Images using Semantic Segmentation Methods (Adding Synthetic Data with Different Proportions) (The Best Evaluation Score is Marked in Bold. 
Means Higher Number is Better, and 
Indicates Lower Number is Better. Ratio Means Adding Certain Proportion of Synthetic Data. 
Represents a Small Positive Quantity which is Smaller Than 
.).
| Focus | Ground-glass opacity | Consolidation | Infection | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Ratio | Dice (%,  ) |
Sen (%,  ) |
Spec (%,  ) |
Dice (%,  ) |
Sen (%,  ) |
Spec (%,  ) |
Dice (%,  ) |
Sen (%,  ) |
Spec (%,  ) |
| 0% | 87.55 0.20 |
86.84 0.31 |
99.82 0.01 |
84.88 0.33 |
82.80 0.51 |
99.96
|
89.57 0.18 |
88.58 0.23 |
99.82 0.01 |
| 10% | 87.65 0.40 |
85.82 0.32 |
99.84 0.01
|
86.12 0.33 |
86.02 0.63 |
99.95
|
89.67 0.31 |
88.11 0.32 |
99.84 0.01
|
| 20% | 87.87 0.34 |
87.67 0.28 |
99.81 0.01 |
85.52 0.34 |
84.16 0.53 |
99.96
|
89.87 0.12 |
89.44 0.20 |
99.81 0.01 |
| 30% | 87.99 0.36 |
87.25 0.36 |
99.82 0.01 |
86.33 0.30 |
86.38 0.51 |
99.95
|
89.78 0.22 |
89.17 0.27 |
99.82 0.01 |
| 40% |
88.33 0.22
|
88.71 0.32
|
99.81 0.01 |
87.25 0.28
|
86.30 0.38 |
99.96
|
90.19 0.17
|
90.34 0.31
|
99.81
|
| 50% | 88.16 0.30 |
86.88 0.01 |
99.84 0.01
|
87.09 0.34 |
86.54 0.47
|
99.96
|
90.06 0.30 |
88.88 0.18 |
99.83 0.01 |