Parameters (Fractions of Image Size) for National Electrical Manufacturers Association NU 4-2008 Phantom
| x0 (center) | y0 (center) | A (long-axis) | B (short-axis) | ϕ (rotation) | Image intensity |
| 0.0 | 0.0 | 0.60 | 0.60 | 0 | 10 |
| −0.1 | −0.3 | 0.10 | 0.10 | 0 | 10 |
| −0.3 | 0.05 | 0.08 | 0.08 | 0 | 10 |
| 0.0 | 0.3 | 0.06 | 0.06 | 0 | 10 |
| 0.3 | −0.15 | 0.04 | 0.04 | 0 | 10 |
| 0.3 | −0.15 | 0.02 | 0.02 | 0 | 10 |