Image Quality Criteria
| Criterion | Definition |
|---|---|
| A | Intercostal spaces are distinguishable from ribs, and structures such as costochondral cartilage and sternum are clearly discernible and distinct |
| B | Interventricular septum of heart is clearly discernible and distinct |
| C | Noise level does not disrupt evaluation |
| D | Overall image quality is good enough to make clinical diagnosis |