Table 3.
ANOVA F-Score and mutual information metrics calculated for each of the extracted geometric features.
| Feature Type | Feature | F-Score | Mutual Information |
|---|---|---|---|
| HR-CTV Geometry Metric | Axis Offset | 49.47 | 0.19 |
| Lateral Mean Extent | 161.01 | 0.35 | |
| Lateral Maximum Extent | 219.92 | 0.32 | |
| Vertical Mean Extent | 27.73 | 0.26 | |
| Vertical Maximum Extent | 61.44 | 0.24 | |
| Volume | 120.46 | 0.35 | |
| OAR Volume | Rectum Volume | 3.60 | 0.05 |
| Bladder Volume | 0.44 | 0.13 | |
| Sigmoid Volume | 1.04 | 0.07 | |
| OAR Proximity to HR-CTV | Rectum Proximity | 12.67 | 0.10 |
| Bladder Proximity | 16.48 | 0.19 | |
| Sigmoid Proximity | 0.08 | 0.08 |
These values were used to reduce the number of features used in the model by selecting only those thank ranked the highest under both metrics. The top three features for each test have been bolded for reference.