Carotid artery wall CT features of the study patients
| Carotid Artery Wall Descriptor | Carotid Infarct Patients | No New Carotid Infarct Patients | P Value | ||||
|---|---|---|---|---|---|---|---|
| Infarct Side | Contralateral Side | ||||||
| Mean | SD | Mean | SD | Mean | SD | ||
| Lumen volume (mm3) | 1519.07 | 255.05 | 1589.81 | 247.86 | 1603.93 | 40.14 | .543 |
| Lumen minimal cross-sectional area (mm2)a | 20.82 | 4.59 | 24.91 | 3.99 | 24.75 | 0.72 | .109 |
| Lumen minimal diameter (mm) | 3.77 | 0.38 | 3.90 | 0.48 | 3.87 | 0.08 | .693 |
| NASCET % lumen stenosis (%)a | 0.29 | 0.07 | 0.26 | 0.10 | 0.21 | 0.02 | .082 |
| Wall volume (mm3) | 1689.72 | 109.08 | 1717.05 | 117.38 | 1623.03 | 20.04 | .353 |
| Wall maximal thickness (mm)a | 5.69 | 1.30 | 4.80 | 1.13 | 3.97 | 0.10 | .000 |
| Fibrous cap thickness (mm)a | 0.49 | 0.14 | 0.49 | 0.20 | 0.30 | 0.03 | .054 |
| Ulcerationsa | 0.43 | 0.27 | 0.43 | 0.27 | 0.27 | 0.03 | .194 |
| Volume of lipids (mm3) | 15.79 | 13.36 | 13.43 | 11.60 | 8.19 | 1.61 | .203 |
| Percent of lipids (compared with the total number of voxels in the carotid wall)a | 0.94 | 0.76 | 0.86 | 0.81 | 0.49 | 0.09 | .197 |
| Number of lipid clusters (20 or more “lipid” voxels adjacent to each other) | 7.29 | 6.61 | 6.29 | 4.03 | 4.51 | 0.62 | .221 |
| Lipid cluster maximal size (mm3)a | 3.11 | 2.44 | 2.30 | 1.36 | 1.36 | 0.17 | .018 |
| Location of the largest lipid cluster (% from wall lumen) | 7.71 | 0.82 | 8.04 | 1.47 | 7.81 | 0.37 | .584 |
| Volume of calcium (mm3)a | 89.57 | 64.17 | 79.37 | 64.28 | 28.67 | 5.74 | .012 |
| Percent of calcium (compared to the total number of voxels in the carotid wall)a | 4.77 | 3.27 | 4.16 | 3.28 | 1.48 | 0.27 | .004 |
| Number of calcium clusters (20 or more “calcium” voxels adjacent to each other)a | 2.50 | 1.49 | 2.79 | 1.87 | 1.37 | 0.18 | .098 |
| Calcium cluster maximal size (mm3)a | 15.69 | 9.30 | 11.53 | 7.74 | 5.62 | 0.80 | .002 |
| Location of the largest calcium cluster (% from wall lumen) | 11.94 | 1.68 | 13.75 | 2.55 | 13.45 | 0.36 | .301 |
Note:—NASCET indicates North American Symptomatic Carotid Endarterectomy Trial.
↵a Indicates features that were different (P < .2) in the patients with new carotid infarcts and in the patients with no new carotid infarct and retained for the multivariate analysis.