Table 3.
Correlation of tortuosity descriptors and continuous variables.
| Variable | RL | SOAM | PAD | TI | ICM |
|---|---|---|---|---|---|
| Age (years) | 0.053 | 0.016 | 0.002 | 0.089 | 0.024 |
| p-Value | 0.371 | 0.791 | 0.973 | 0.131 | 0.682 |
| C6 segment diameter (mm) | −0.040 | −0.070 | −0.084 | −0.082 | −0.016 |
| p-Value | 0.498 | 0.232 | 0.155 | 0.162 | 0.787 |
| C7 segment diameter (mm) | −0.026 | 0.024 | 0.025 | 0.045 | 0.068 |
| p-Value | 0.659 | 0.683 | 0.668 | 0.444 | 0.245 |
| Mean ICA diameter (mm) | −0.187 | −0.034 | −0.057 | 0.072 | 0.091 |
| p-Value | 0.001 | 0.562 | 0.335 | 0.219 | 0.123 |
| MCA diameter (mm) | 0.082 | −0.003 | 0.024 | −0.031 | −0.013 |
| p-Value | 0.162 | 0.965 | 0.680 | 0.596 | 0.827 |
| ACA diameter (mm) | 0.024 | 0.026 | 0.060 | −0.028 | 0.034 |
| p-Value | 0.681 | 0.663 | 0.309 | 0.635 | 0.568 |
| Time after SAH (months) | −0.437 | 0.447 | 0.229 | 0.534 | 0.773 |
| p-Value | 0.118 | 0.109 | 0.432 | 0.049 | 0.001 |
RL, Relative Length; SOAM, Sum of Angle Metrics; PAD, Product of Angle Distance; TI, Triangular Index; ICM, Inflection Count Metrics; ICA, internal carotid artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; SAH, subarachnoid hemorrhage.