Article Figures & Data
Figures
- Fig 1.
Construction of 2 vascular models of AComA aneurysms from bilateral 3D rotational angiograms. The top row corresponds to patient 1, whereas the bottom row corresponds to patient 2. From left to right, the columns show volume renderings of the 3D rotational angiograms obtained by contrast injection in the right and left ICAs, the coregistered 3D rotational angiograms, and the reconstructed vascular models.
- Fig 2.
Flow waveforms used in the numeric models of aneurysm hemodynamics.
- Fig 3.
Visualization of the inflow and intra-aneurysmal flow patterns: Instantaneous streamlines at peak systole of the base case (1) are plotted for patient 1 (A) and patient 2 (B). The streamlines originating in the left and right A1 segments are rendered in red and light blue, respectively. The dominance of the left inflow in patient 2 and the more symmetric inflow pattern of patient 1 can be clearly seen.
- Fig 4.
Selected regions for comparison of WSSs obtained under different flow conditions. The left and right panels correspond to the aneurysms of patients 1 and 2, respectively.
- Fig 5.
Average WSS magnitude over each region of patient 1 for the flow conditions listed in the Table. WSS magnitudes are in dynes per square centimeter, and time is in percentage of the cardiac cycle.
- Fig 6.
Average WSS magnitude over each region of patient 2 for the flow conditions listed in the Table. WSS magnitudes are in dynes per square centimeter, and time is in percentage of the cardiac cycle.
- Fig 7.
Visualizations of the instantaneous WSS distribution over the aneurysm of patient 1. Each column corresponds to each of the 4 selected instants of time defined in Fig 5. Each row corresponds to each of the 9 flow conditions listed in the Table. The regions defined in Fig 4 (left) are also shown for reference. WSS magnitudes range from 0 (blue) to 200 dyne/cm2 (magenta).
- Fig 8.
Visualizations of the instantaneous WSS distribution over the aneurysm of patient 2. Each column corresponds to each of the 4 selected instants of time defined in Fig 6. Each row corresponds to each of the 9 flow conditions listed in the Table. The regions defined in Fig 4 (right) are also shown for reference. WSS magnitudes range from 0 (blue) to 200 dyne/cm2 (magenta).
Tables
Flow conditions used for the numerical models of aneurysm hemodynamics
Case QLICA (mL/s) QRICA (mL/s) Δφ SLICA SRICA 1 4.82 4.82 0% 1 1 2 4.58 5.06 0% 1 1 3 5.06 4.58 0% 1 1 4 5.42 5.64 0% 2 3 5 5.64 5.42 0% 3 2 6 4.82 4.82 +2% 1 1 7 4.82 4.82 −2% 1 1 8 4.82 4.82 +4% 1 1 9 4.82 4.82 −4% 1 1 Note:—QLICA and QRICA denote mean flows in the left and right internal carotid arteries (ICAs), respectively; Δφ, the phase shift between the left and right waveforms; SLICA and SRICA, the waveform shapes in the left and right ICAs, respectively; these numbers indicate the curves shown in Figure 2.
In this issue
Jump to section
Related Articles
Cited By...
- Effects of size and elasticity on the relation between flow velocity and wall shear stress in side-wall aneurysms: A lattice Boltzmann-based computer simulation study
- Quantitative comparison of hemodynamic parameters from steady and transient CFD simulations in cerebral aneurysms with focus on the aneurysm ostium
- Generalized versus Patient-Specific Inflow Boundary Conditions in Computational Fluid Dynamics Simulations of Cerebral Aneurysmal Hemodynamics
- Reply:
- Association of Hemodynamic Characteristics and Cerebral Aneurysm Rupture
- Quantitative Characterization of the Hemodynamic Environment in Ruptured and Unruptured Brain Aneurysms
- Intracranial Blood-Flow Velocity and Pressure Measurements Using an Intra-Arterial Dual-Sensor Guidewire
- Quantitative Hemodynamic Analysis of Brain Aneurysms at Different Locations
- Hemodynamic Patterns of Anterior Communicating Artery Aneurysms: A Possible Association with Rupture