Table 2.
Summarized results of the evaluation of the segmentation methodology for the thrombus on a data set of 40 CT-scan obtained from patients with infrarenal AAA.
| Segmentation of the thrombus (525 slices analyzed) | ||||
|---|---|---|---|---|
| Mean+/−SD | Min- Max | Median | Interquartile range | |
| Surface from manual method (mm2) | 1109.9 +/− 685.7 | 206.2–3359.1 | 924.8 | 538.8–1589.1 |
| Surface from automatic method (mm2) | 1149.0 +/− 665.3 | 202.2–3088.0 | 1034.5 | 556.5–1627.4 |
| Volume similarity | 0.91 +/− 0.11 | 0.40–1.00 | 0.95 | 0.90–0.98 |
| Sensitivity | 0.91 +/− 0.14 | 0.22–1.00 | 0.96 | 0.91–0.99 |
| Specificity | 0.9978 +/− 0.0029 | 0.9778–1.0000 | 0.9988 | 0.9974–0.9993 |
| Jaccard index | 0.80 +/− 0.15 | 0.12–0.96 | 0.85 | 0.78–0.89 |
| Dice Similarity Coefficient | 0.88 +/− 0.12 | 0.22–0.98 | 0.92 | 0.87–0.94 |
| Hausdorff distance | 2.13 +/− 0.68 | 0.88–6.48 | 1.98 | 1.69–2.39 |