Table 5. Top 20 high-frequency keywords related to 4D flow MRI from 2003 to 2022.
| Ranking | Count | Centrality | Keywords | Ranking | Count | Centrality | Keywords |
|---|---|---|---|---|---|---|---|
| 1 | 373 | 0.04 | Blood flow | 11 | 126 | 0.09 | MRI |
| 2 | 315 | 0.01 | 4D flow MRI | 12 | 122 | 0.01 | Velocity |
| 3 | 277 | 0.01 | Quantification | 13 | 90 | 0.00 | Heart |
| 4 | 258 | 0.13 | Wall shear stress | 14 | 87 | 0.05 | Magnetic resonance |
| 5 | 185 | 0.06 | Phase contrast MRI | 15 | 84 | 0.06 | Computational fluid dynamics |
| 6 | 175 | 0.00 | 4D flow | 16 | 83 | 0.06 | Visualization |
| 7 | 161 | 0.01 | Hemodynamics | 17 | 75 | 0.02 | Bicuspid aortic value |
| 8 | 156 | 0.13 | Pattern | 18 | 65 | 0.11 | Disease |
| 9 | 137 | 0.02 | Magnetic resonance imaging | 19 | 60 | 0.00 | Valve |
| 10 | 133 | 0.05 | Cardiovascular magnetic resonance | 20 | 57 | 0.13 | Congenital heart disease |
4D flow MRI, 4-dimensional flow magnetic resonance imaging.