Table 2.
Association of intracerebral aneurysm development risk factors with internal carotid tortuosity descriptors.
| Tortuosity Descriptor | Women (n = 227) |
Men (n = 71) |
p-Value |
|---|---|---|---|
| Relative Length ± SD | 0.49 ± 0.19 | 0.48 ± 0.18 | 0.812 |
| Sum of Angle Metrics ± SD | 0.37 ± 0.21 | 0.31 ± 0.21 | 0.028 |
| Product of Angle Distance ± SD | 0.37 ± 0.20 | 0.30 ± 0.20 | 0.016 |
| Triangular Index ± SD | 0.30 ± 0.13 | 0.25 ± 0.10 | 0.006 |
| Inflection Count Metric ± SD | 0.27 ± 0.15 | 0.23 ± 0.13 | 0.046 |
|
Hypertension
(n = 142) |
No hypertension
(n = 156) |
||
| Relative Length ± SD | 0.49 ± 0.18 | 0.48 ± 0.19 | 0.900 |
| Sum of Angle Metrics ± SD | 0.37 ± 0.22 | 0.35 ± 0.20 | 0.327 |
| Product of Angle Distance ± SD | 0.36 ± 0.21 | 0.35 ± 0.19 | 0.543 |
| Triangular Index ± SD | 0.30 ± 0.14 | 0.28 ± 0.11 | 0.210 |
| Inflection Count Metric ± SD | 0.27 ± 0.16 | 0.25 ± 0.13 | 0.204 |
|
Diabetes Mellitus
(n = 32) |
No diabetes Mellitus
(n = 266) |
||
| Relative Length ± SD | 0.47 ± 0.16 | 0.49 ± 0.19 | 0.573 |
| Sum of Angle Metrics ± SD | 0.35 ± 0.21 | 0.36 ± 0.21 | 0.811 |
| Product of Angle Distance ± SD | 0.35 ± 0.21 | 0.35 ± 0.20 | 0.953 |
| Triangular Index ± SD | 0.30 ± 0.17 | 0.28 ± 0.12 | 0.372 |
| Inflection Count Metric ± SD | 0.25 ± 0.13 | 0.26 ± 0.15 | 0.690 |
|
Smoking
(n = 38) |
No Smoking
(n = 260) |
||
| Relative Length ± SD | 0.51 ± 0.18 | 0.48 ± 0.19 | 0.312 |
| Sum of Angle Metrics ± SD | 0.37 ± 0.21 | 0.36 ± 0.21 | 0.758 |
| Product of Angle Distance ± SD | 0.38 ± 0.21 | 0.35 ± 0.20 | 0.379 |
| Triangular Index ± SD | 0.27 ± 0.11 | 0.29 ± 0.13 | 0.324 |
| Inflection Count Metric ± SD | 0.26 ± 0.13 | 0.26 ± 0.15 | 0.989 |
|
Hypercholesterolemia
(n = 20) |
No Hypercholesterolemia
(n = 278) |
||
| Relative Length ± SD | 0.52 ± 0.17 | 0.48 ± 0.19 | 0.403 |
| Sum of Angle Metrics ± SD | 0.31 ± 0.20 | 0.36 ± 0.21 | 0.268 |
| Product of Angle Distance ± SD | 0.31 ± 0.20 | 0.36 ± 0.20 | 0.336 |
| Triangular Index ± SD | 0.26 ± 0.11 | 0.29 ± 0.13 | 0.295 |
| Inflection Count Metric ± SD | 0.23 ± 0.11 | 0.26 ± 0.15 | 0.360 |
|
History of Heart Attack
(n = 5) |
No History of Heart Attack
(n = 293) |
||
| Relative Length ± SD | 0.48 ± 0.14 | 0.48 ± 0.19 | 0.964 |
| Sum of Angle Metrics ± SD | 0.40 ± 0.32 | 0.36 ± 0.21 | 0.658 |
| Product of Angle Distance ± SD | 0.43 ± 0.37 | 0.35 ± 0.20 | 0.379 |
| Triangular Index ± SD | 0.26 ± 0.08 | 0.29 ± 0.13 | 0.653 |
| Inflection Count Metric ± SD | 0.21 ± 0.07 | 0.26 ± 0.14 | 0.447 |
| History of Ischemic Stroke (n = 28) | No History of Ischemic Stroke (n = 270) | ||
| Relative Length ± SD | 0.48 ± 0.16 | 0.48 ± 0.19 | 0.883 |
| Sum of Angle Metrics ± SD | 0.36 ± 0.22 | 0.36 ± 0.21 | 0.999 |
| Product of Angle Distance ± SD | 0.33 ± 0.23 | 0.36 ± 0.20 | 0.545 |
| Triangular Index ± SD | 0.30 ± 0.19 | 0.29 ± 0.12 | 0.582 |
| Inflection Count Metric ± SD | 0.25 ± 0.14 | 0.26 ± 0.14 | 0.724 |
| History of Subarachnoid Hemorrhage (n = 18) | No history of Subarachnoid Hemorrhage (n = 280) | ||
| Relative Length ± SD | 0.53 ± 0.18 | 0.48 ± 0.19 | 0.284 |
| Sum of Angle Metrics ± SD | 0.42 ± 0.22 | 0.35 ± 0.21 | 0.176 |
| Product of Angle Distance ± SD | 0.46 ± 0.22 | 0.35 ± 0.20 | 0.024 |
| Triangular Index ± SD | 0.30 ± 0.08 | 0.29 ± 0.13 | 0.733 |
| Inflection Count Metric ± SD | 0.25 ± 0.13 | 0.26 ± 0.15 | 0.828 |