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Overview of phantoms
| Phantom | Characteristics | Realistic simulation |
|---|---|---|
| ACR | Contains uniform contrast and resolution objects. Widely used (more than 1,000 sites) | Least anthropomorphic |
| NEMA NU-2 image quality | Widest range of spheres to assess quantitative performance. Reasonable level of attenuation | Somewhat anthropomorphic |
| SNM-CTN | Anthropomorphic, geometry very close to real patient | Most anthropomorphic |
