Table 1.
Summarized results of the evaluation of the segmentation methodology for the aortic lumen on a data set of 40 CT-scan obtained from patients with infrarenal AAA.
| Segmentation of the aortic lumen (620 slices analyzed) | ||||
|---|---|---|---|---|
| Mean+/−SD | Min-Max | Median | Interquartile range | |
| Surface from manual method (mm2) | 652.8 +/− 404.3 | 185.5–2764.7 | 528.1 | 367.0–795.4 |
| Surface from automatic method (mm2) | 620.6 +/− 391.0 | 141.3–2604.4 | 503.1 | 351.9–760.7 |
| Volume similarity | 0.96 +/− 0.04 | 0.69–1 | 0.97 | 0.95–0.99 |
| Sensitivity | 0.90 +/− 0.06 | 0.45–0.99 | 0.92 | 0.88–0.95 |
| Specificity | 0.9997 +/− 0.0004 | 0.9924–1.0000 | 0.9997 | 0.9996–0.9999 |
| Jaccard index | 0.87 +/− 0.07 | 0.42–0.96 | 0.88 | 0.85–0.91 |
| Dice Similarity Coefficient | 0.93 +/− 0.04 | 0.59–0.98 | 0.94 | 0.92–0.96 |
| Hausdorff distance | 1.78 +/− 0.38 | 0.85–3.24 | 1.72 | 1.52–2.0 |