Article Figures & Data
Figures
- Fig 1.
Results of virtual coiling for case 2. Untreated model (A) and treated models corresponding to coil packing densities of 5.6% (B), 11.2% (C), 16.7% (D), 22.2% (E), and 30.0% (F).
- Fig 2.
Blood flow velocity magnitudes in gray-scale for an aneurysm cross-section at peak systole for case 2. A, Changes in the velocity are presented with a fixed coil configuration and increasing packing density. B, Two coil configurations are compared for packing densities of 11.2% and 16.7%. The coils are presented in yellow and the percentages represent the packing densities achieved for each model.
- Fig 3.
WSS distributions for the untreated and several treated models for case 2, calculated at peak systole (A) and end diastole (B).
- Fig 4.
A, Time-averaged intra-aneurysmal mean flow velocity reduction rate. B, Time-averaged WSS in the aneurysm dome.
- Fig 5.
Variation of the aneurysm areas with low and high WSS expressed as a percentage of the whole aneurysm dome during one cardiac cycle for case 2. A, Untreated model. B and C, treated models with packing densities of 22.2% and 30.0%, respectively.
Tables
Case No. Volume of Aneurysm Region (mm3) Coil Diameter (mm) Coil Length (cm) Coil Shape Coil Packing Density (%) 1 107 0.304 5–30 Straight 6.8, 13.6, 20.0, 25.0, 31.5 2 423 0.457 4–30 Straight 5.6, 11.2, 16.7, 22.2, 30.0 3 635 0.457 4–30 Straight 7.0, 14.0, 21.0, 27.5, 32.0 - Table 2:
P values of ANOVA tests performed for each of the cases at different packing densities
Case No. Packing Density (%) P Value Obtained from ANOVA Tests for Velocity Reduction Rate Average WSS Low WSS Area High WSS Area 1 20.0 .001* .981 .245 .834 25.0 .064 .988 .833 .886 31.5 .127 .941 .269 .723 2 22.2 .000* .927 .000* .309 30.0 .869 .981 .181 .956 3 21.0 .000* .373 .002* .163 27.5 .077 .601 .757 .583 32.0 .155 .655 .760 .552 -
↵* Means significantly different due to coil configuration (P < .01).
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