Description of morphologic and hemodynamic characteristics
| Name | Description | Unit |
|---|---|---|
| Morphologic characteristics | ||
| Aneurysm volume | Volume of the aneurysm | cm3 |
| Aneurysm size | Maximum Euclidean distance of the aneurysm surface | cm |
| Neck size | Maximum Euclidean distance of the neck surface | cm |
| Parent vessel diameter | Diameter of the vessel nearest to the aneurysm neck | cm |
| AR | Aspect ratio; aneurysm height/neck size | Ratio |
| HWR | Height-to-width ratio; aneurysm height/aneurysm width | Ratio |
| BF | Bottleneck factor; aneurysm width/neck size | Ratio |
| BL | Bulge location; distance of plane with largest diameter from neck/aneurysm height | Ratio |
| SizeR | Size ratio | Ratio |
| VOR | Volume to ostium ratio; aneurysm volume/neck area | Ratio |
| IPR | Isoperimetric ratio; aneurysm area/aneurysm volume2/3 | Ratio |
| UI | Undulation index | Index |
| EI | Ellipticity index | Index |
| NSI | Nonsphericity index | Index |
| GAA | Area weighted average of the Gaussian curvature | cm–2 |
| Hemodynamic characteristics | ||
| ICI | Inflow concentration index | Index |
| SR | Shear rate | 1/s |
| VE | Mean velocity | cm/s |
| VO | Mean vorticity | 1/s |
| WSS | Wall shear stress (time averaged mean and maximum) | dyne/cm2 |
| LSA | Low shear stress area | % |
| SCI | Shear concentration index | Index |
| OSI | Oscilatory shear index (time averaged mean and maximum) | Index |
| CLL | Time-averaged vortex core-line length | cm |
| PODE | Proper orthogonal decomposition entropy |