Table 2.
Baseline and follow-up morphologic and hemodynamic characteristics and rupture resemblance scores for the five growing and six stable IA cases. The comparison of the baseline and follow-up characteristics of the growing IAs and the comparison of the baseline characteristics of the growing IAs and the characteristics of the stable IAs is shown.
| IA size (mm) | Volume (mm3) | AR | SR | UI | Normalized WSS | OSI (x10−2) | RRSM (%) | RRSH (%) | RRSC (%) | |
|---|---|---|---|---|---|---|---|---|---|---|
| Stable Cases | ||||||||||
| Stable 1 | 2.80 | 16.9 | 0.90 | 1.04 | 0.010 | 1.55 | 0.55 | 10.0 | 1.1 | 1.6 |
| Stable 2 | 2.51 | 10.6 | 0.73 | 1.24 | 0.055 | 2.21 | 0.80 | 12.4 | 0.2 | 0.7 |
| Stable 3 | 4.61 | 49.1 | 1.30 | 1.29 | 0.055 | 0.83 | 0.97 | 13.1 | 22.8 | 14.5 |
| Stable 4 | 3.11 | 15.9 | 0.98 | 1.31 | 0.034 | 1.29 | 0.58 | 13.4 | 2.8 | 3.6 |
| Stable 5 | 3.41 | 33.7 | 0.91 | 1.30 | 0.023 | 1.23 | 0.30 | 13.2 | 2.1 | 2.7 |
| Stable 6 | 2.99 | 16.1 | 0.94 | 1.02 | 0.017 | 0.90 | 0.87 | 9.8 | 16.1 | 9.2 |
| Mean | 3.24 | 23.7 | 0.96 | 1.20 | 0.032 | 1.33 | 0.68 | 12.0 | 7.5 | 5.4 |
| SD | 0.74 | 14.7 | 0.19 | 0.13 | 0.019 | 0.50 | 0.25 | 1.7 | 9.5 | 5.4 |
| Growing Cases- Baseline | ||||||||||
| Growing 1 | 1.26 | 1.8 | 0.45 | 0.66 | 0.015 | 2.20 | 0.61 | 6.5 | 0.1 | 0.3 |
| Growing 2 | 8.42 | 553.0 | 1.08 | 2.73 | 0.006 | 0.64 | 1.89 | 47.5 | 74.6 | 74.8 |
| Growing 3 | 1.80 | 7.4 | 0.52 | 0.79 | 0.011 | 1.00 | 0.26 | 7.5 | 4.3 | 2.8 |
| Growing 4 | 2.44 | 16.5 | 0.65 | 1.33 | 0.024 | 0.75 | 1.41 | 13.7 | 45.9 | 30.0 |
| Growing 5 | 9.16 | 962.0 | 0.66 | 2.84 | 0.018 | 0.44 | 0.43 | 50.7 | 30.5 | 40.5 |
| Mean | 4.62 | 308.1 | 0.67 | 1.67 | 0.015 | 1.01 | 0.92 | 25.2 | 31.1 | 29.7 |
| SD | 3.84 | 435.0 | 0.24 | 1.05 | 0.007 | 0.70 | 0.70 | 22.1 | 30.8 | 30.6 |
| Growing Cases- Follow-up | ||||||||||
| Growing 1 | 2.14 | 6.3 | 0.56 | 1.09 | 0.031 | 0.83 | 8.43 | 10.5 | 100.0 | 100.0 |
| Growing 2 | 12.12 | 1595.0 | 1.19 | 4.81 | 0.006 | 0.39 | 1.19 | 92.2 | 67.1 | 91.7 |
| Growing 3 | 3.13 | 22.7 | 0.75 | 1.56 | 0.037 | 0.69 | 0.45 | 17.4 | 15.9 | 12.3 |
| Growing 4 | 6.23 | 67.6 | 1.18 | 3.00 | 0.179 | 0.65 | 0.27 | 55.9 | 13.5 | 28.3 |
| Growing 5 | 15.52 | 3370.6 | 0.90 | 6.26 | 0.013 | 0.38 | 0.28 | 98.6 | 29.0 | 91.4 |
| Mean | 7.83 | 1012.4 | 0.92 | 3.34 | 0.053 | 0.59 | 2.12 | 54.9 | 45.1 | 64.7 |
| SD | 5.80 | 1482.0 | 0.27 | 2.18 | 0.071 | 0.20 | 3.55 | 40.9 | 37.4 | 41.1 |
| Comparison | ||||||||||
| Stable vs. Baseline Growing Cases | ||||||||||
| p-value | 0.407 | 0.140 | 0.066 | 0.298 | 0.086 | 0.407 | 0.448 | 0.174 | 0.165 | 0.086 |
| Growing Cases: Baseline vs. Follow-up | ||||||||||
| p-value | 0.031* | 0.208 | 0.034* | 0.034* | 0.265 | 0.160 | 0.512 | 0.034* | 0.569 | 0.129 |
Abbreviations: AR, aspect ratio; IA, intracranial aneurysm; OSI, oscillatory shear index; RRSC, combination rupture resemblance score; RRSH, hemodynamic rupture resemblance score; RRSM, morphologic rupture resemblance score; SR, size ratio; UI, undulation index; WSS, wall shear stress