Table 2.
Comparison of the gold standard manual pipeline and the automatic pipeline.
| Pipeline type | Manual pipeline | Automated pipeline |
|---|---|---|
| Image acquisition (measurement time) | 8.4 min | 8.4 min |
| Segmentation | 15–30 min19 | 0.5 min |
| vBMD measurement | 1 min | 1 min |
| Total time | 24.4–39.4 min | 9.9 min |
| Speedup (with respect to manual pipeline) | 1 | 2.5–4.0 |
Manual and automatic pipeline only differ in the segmentation step. For the manual pipeline an expert has to annotate the patient’s slices semi-automatically while for the automatic pipeline, a neural network predicts the location of the second MC. Both network variants, the 2D U-Net and the 3D U-Net have similar run times for the segmentation task. Differences of time between manual pipeline and automated pipeline are highlighted in bold font.