Article Figures & Data
Figures
- Fig 1.
Ruptured-versus-unruptured aneurysms. Ratio of mean hemodynamic (A) and geometric (B) variables of ruptured over unruptured aneurysms for all aneurysms (red bars) and by location (green bars, BAtip; blue bars, ICAbif). Asterisks indicate statistically significant differences. Hemo indicates hemodynamic; geom indicates geometric; <taper>, mean taper; KE, kinetic energy; SR, shear rate; VO, vorticity; VD, viscous dissipation; <WSS>, mean WSS; podent, POD entropy; podenum, POD number of modes; <OSI>, mean OSI; A, aneurysm; N, neck; AR, aspect ratio.
- Fig 2.
BAtip-versus-ICAbif aneurysms. Ratio of mean hemodynamic (A) and geometric (B) variables of BAtip aneurysms over ICAbif aneurysms. Asterisks indicate statistically significant differences. KE indicates kinetic energy; SR, shear rate; VO, vorticity; VD, viscous dissipation; <WSS>, mean WSS; podent, POD entropy; podenum, POD number of modes; <OSI>, mean OSI; hemo, hemodynamic; geom, geometric; <taper>, mean taper; A, aneurysm; N, neck; AR, aspect ratio.
- Fig 3.
Comparison of hemodynamic variables across BAtip and ICAbif aneurysms grouped according to their sizes as small, medium, and large. KE indicates kinetic energy; SR, shear rate; VO, vorticitiy; VD, viscous dissipation; <WSS>, mean WSS; podent, POD entropy; podenum, POD number of modes; hemo, hemodynamic.
- Fig 4.
Examples of a ruptured (upper row) and an unruptured (lower row) BAtip aneurysm. Peak systole flow visualizations show the following: wall shear stress distribution (A and E), inflow jet (B and F), flow pattern (C and G), and vortex core lines (D and H). White lines indicate the aneurysm necks.
- Fig 5.
Examples of a ruptured (upper row) and an unruptured (lower row) ICAbif aneurysm. Peak systole flow visualizations show the following: wall shear stress distribution (A and E), inflow jet (B and F), flow pattern (C and G), and vortex core lines (D and H). White lines indicate the aneurysm necks.
Tables
Hemodynamic and geometric variables used in the study and the aspect of the aneurysm they characterize
Variables Metrics Characterizes Hemodynamics Q, ICI Inflow rate, inflow concentration index Inflow jet VE, KE Mean velocity, kinetic energy Flow speed in aneurysm VO, SR, VD Vorticity, shear rate, viscous dissipation Flow rotation deformation/dissipation in aneurysm <WSS>, WSSmin, WSSmax, SCI, LSA Mean, min, and max WSS, shear concentration index, area under low WSS WSS distribution <OSI>, OSImax Mean, max oscillatory shear index Oscillatory flow/WSS Corelen Length of vortex core lines Flow complexity Podent, podenum POD entropy and number of modes Flow stability Geometry Aneurysym size, volume, area, SizeR Aneurysm diameter, volume, area, size ratio Aneurysm size Neck size, area Neck diameter, area Neck size Depth, aspect ratio Aneurysm depth, aspect ratio Aneurysm shape elongation Artery, branch1, branch2 Diameter parent and branch arteries Artery sizes Symmetry Ratio of branch diameters Bifurcation symmetry <Taper>, taper1, taper2 Mean taper, branch taper Artery tapering Note:—POD indicates proper orthogonal decomposition; SizeR, size ratio.
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