Table 2.
Quality control tests for conventional simulators (tolerances and action levels are specified in millimeters unless otherwise stated)
| Designator | Test | Performance | ||
|---|---|---|---|---|
| Tolerance | Action | |||
| Daily | ||||
| DS1 | Door interlock | Functional | ||
| DS2 | Motion interlock | Functional | ||
| DS3 | Beam status indicators | Functional | ||
| DS4 | Emergency off buttons | Functional | ||
| DS5 | Collision avoidance | Functional | ||
| DS6 | Lasers/crosswires | 1 | 2 | |
| DS7 | Optical distance indicator | 1 | 2 | |
| DS8 | Crosswires/reticle/block tray | 1 | 2 | |
| DS9 | Light/radiation coincidence | 1 | 2 | |
| DS10 | Field size indicators | 1 | 2 | |
| Monthly | ||||
| MS1 | Gantry angle readouts | 0.5° | 1° | |
| MS2 | Collimator angle readouts | 0.5° | 1° | |
| MS3 | Couch position readouts | 1 | 2 | |
| MS4 | Alignment of FAD movement | 1 | 2 | |
| MS5 | Couch isocenter | 2 | 3 | |
| MS6 | Couch parallelism | 1 | 2 | |
| MS7 | Laser/crosswire isocentricity | 1 | 2 | |
| MS8 | Optical distance indicator | 1 | 2 | |
| MS9 | Crosswire centering | 1 | 2 | |
| MS10 | Light/radiation coincidence | 1 | 2 | |
| MS11 | Field size indicators | 1 | 2 | |
| MS12 | Records | Complete | ||
| Six‐monthly | ||||
| SS1 | Lead apron | Functional | ||
| SS2 |
|
5% | 10% | |
| SS3 | Reference dosimetry | 5% | 10% | |
| SS4 | Beam quality (HVL) | 5% | 10% | |
| SS5 | Automatic exposure control | 5% | 10% | |
| SS6 | Focal spot | Reproducible | ||
| SS7 | Contrast | Reproducible | ||
| SS8 | Resolution | Reproducible | ||
| SS9 | Fluoroscopic timer | 5% | 10% | |
| Annually | ||||
| AS1 | Redefine isocenter | 1 | 2 | |
| AS2 | Couch deflection | 3 | 5 | |
| AS3 | Alignment of focal spots | 0.5 | 1 | |
| AS4 | Independent quality control review | Complete | ||