Table 3.
Monthly quality control tests
| Designator | Test | Performance | |
|---|---|---|---|
| Tolerance | Action | ||
| Monthly | |||
| MK1 | Mechanical stability and safety | Functional | |
| MK2 | Cone/filters integrity and cone indicators | Functional | |
| MK3 | Physical distance indicators | 2 mm | 3 mm |
| MK4 | Accuracy of head tilt and rotation readouts | 1° | 1.5° |
| MK5 | Light/x ray field coincidence | 2 mm | 3 mm |
| MK6 | Light field size | 2 mm | 3 mm |
| MK7 | X ray field size indicator | 2 mm | 3 mm |
| MK8 | X ray field uniformity | 5% | 8% |
| MK9 | Output verification and reproducibility with head tilt and rotation | 2% | 4% |
| MK10 | Timer accuracy verification | 1% | 2% |
| MK11 | Dose rate output constancy | 2% | 4% |
| MK12 | Records | Complete | |