Article Figures & Data
Figures
- Fig 1.
Subdivision of the volumetric vascular domain and its surface into geographic regions: aneurysm, near-parent vessel, far-parent vessel, and ostium surface.
- Fig 2.
Hemodynamic data reduction. Top row, left to right: aneurysm neck delineation, aneurysm orifice triangulation, and vascular model geographic subdivision. Middle row: flow visualization, left to right: flow streamlines, isovelocity surface, WSS distribution. Bottom row, left to right: normal velocity magnitude at the aneurysm orifice; inflow (red) and outflow (blue) regions of the ostium; and regions of high (red), normal (gray), and low (blue) WSS.
- Fig 3.
Ratio of mean hemodynamic variables of ruptured aneurysms to unruptured aneurysms for each flow condition considered. The green bars represent the mean values over the unruptured aneurysm group used as reference values (ie, normalized to 1). The asterisks indicate that the differences in mean values between ruptured and unruptured groups are statistically significant (for all flow conditions).
Tables
- Table 1:
Mean values of hemodynamic variables computed over the ruptured and unruptured groups for each of the flow conditions considereda
Flow Condition Aneurysm Group ICI MWSS (dyne/cm2) SCI VDR KER LSA LSI Pulsatile flow (HR = 60 bpm) Ruptured 1.012 384 9.97 0.36 0.232 60% 0.26 Unruptured 0.66 277 6.47 0.951 0.176 56% 0.25 P value .0035 .0034 .0154 .0123 .2226 .3716 .6630 Pulsatile flow (HR = 100 bpm) Ruptured 1.001 545 10.14 0.4156 0.259 60% 0.27 Unruptured 0.651 402 6.39 1.0321 0.197 56% 0.25 P value .0034 .0039 .0073 .0065 .1836 .4317 .6837 Steady flow, low Ruptured 1.031 271 8.26 0.399 0.25 54% 0.216 Unruptured 0.682 191 5.90 1.081 0.19 52% 0.216 P value .0029 .0026 .0490 .0102 .2410 .0953 .9800 Steady flow, medium Ruptured 1.001 187 9.88 0.341 0.226 60% 0.26 Unruptured 0.662 130 6.36 0.914 0.170 56% 0.25 P value .0035 .0026 .0159 .0174 .2362 .4621 .7407 Steady flow, high Ruptured 0.951 108 12.77 0.236 0.168 68% 0.333 Unruptured 0.622 74 7.52 0.571 0.129 63% 0.308 P value .0040 .0037 .0092 .0105 .3492 .2357 .5029 -
a The (2-tailed) P values indicate the statistical significance of the difference of the mean values between the ruptured and unruptured groups, computed using a Student t test.
-
- Table 2:
Variability with flow conditions of average hemodynamic measures and ratios of ruptured to unruptured aneurysms
Variable Ruptured Unruptured Ratio ICI 7.8% 8.8% 1.6% MWSS 80.2% 81.6% 7.1% SCI 35.3% 21.5% 17.5% VDR 43.2% 47.1% 10.7% KER 20.5% 17.4% 2.0% LSA 20.5% 17.4% 3.7% LSI 35.1% 29.8% 7.5% 
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