Comparison of hemodynamic effects of porous media and synchrotron X-ray microtomography computational fluid dynamics models of coiled aneurysms
| Porous media | Microtomography | Difference (%) | |||||
|---|---|---|---|---|---|---|---|
| Hemodynamic variable | Patient | Cycle-averaged | Peak systole | Cycle-averaged | Peak systole | Cycle-averaged | Peak systole |
| WSS (Pa) | 1 | 0.312 | 0.623 | 0.426 | 0.8021 | −31.01 | −25.14 |
| 2 | 0.081 | 0.132 | 0.048 | 0.091 | 51.45 | 37.24 | |
| WSSG (Pa/m) | 1 | 7280 | 12 700 | 4250 | 8460 | 52.45 | 40.02 |
| 2 | 186.25 | 300.52 | 442.60 | 807.53 | −77.64 | −91.51 | |
| OSI | 1 | 0.0078 | NA | 0.0172 | NA | −39.74 | NA |
| 2 | 0.0153 | N/A | 0.0717 | N/A | −129.27 | N/A | |
| QAneurysm (mL/min) | 1 | 10.25 | 18.95 | 7.68 | 15.69 | 28.68 | 18.81 |
| 2 | 8.08 | 12.51 | 3.08 | 5.06 | 89.56 | 84.75 | |
| ε (mW) | 1 | 8.01×10−4 | 2.44×10−3 | 1.87×10−3 | 5.07×10−3 | −79.82 | −70.02 |
| 2 | 1.27×10−4 | 3.08×10−4 | 1.30×10−4 | 3.55×10−4 | −2.46 | −13.45 | |
OSI, oscillatory shear index; QAneurysm, intra-aneurysmal flow; WSS, wall shear stress; WSSG, WSS gradient; ε, viscous dissipation.