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This table outlines the common reasons for why vertebrae were missed from the object detector in the 3rd fold testing set. Main categories are outlined in the 2nd through 4th column.
| Network Modality (Type) | Vertebra detected but below IoU threshold | Obstructive devices (e.g. screws, wires) | Fused vertebrae | Imaging artifacts | Total Accuracy |
|---|---|---|---|---|---|
| MRI (Landmark) | 30 | 0 | 4 | 0 | 1505/1539 = 97.8% |
| CT (Landmark) | 0 | 2 | 5 | 8 | 312/327 = 95.4% |
| X-ray (Landmark) | 8 | 20 | 0 | 1 | 582/611 = 95.2% |
