| Item | Test | Frequency | Tolerance | Applicable to clinical practice? | QMP initials |
|---|---|---|---|---|---|
| Dosimetry tests | |||||
| D1 | Photon and electron output constancy |
Dailya
Monthly Annual |
3% of baseline 2% of baseline 1% of TG51 |
Y/N Y/N Y/N |
|
| D2 | Photon and electron beam profile constancy |
Dailya
Monthly Annual |
2% 2% 2% of TPS OAFsb |
Y/N Y/N Y/N |
|
| D3 | Electron beam energy |
Monthly Annual |
2 mm 2 mm |
Y/N Y/N |
|
| D4 | Photon beam energy |
Monthly Annual |
1% of PDD/TPR (relative change in value) 1% of PDD/TPR at reference depth |
Y/N Y/N |
|
| D5 | Dynamic delivery control | Monthly | 3% of open field dose | Y/N | |
| D6 | Photon MU linearity (output constancy) | Annual | 2% >10 MU for open field; 2% for segmented field | Y/N | |
| D7 | Electron MU linearity (output constancy) | Annual | 2% for clinical range | Y/N | |
| D8 | Photon output vs dose rate | Annual | 2% | Y/N | |
| D9 | Photon and electron output vs gantry angle | Annual | 2% of IEC gantry 0° output | Y/N | |
| D10 | Photon and electron OAF vs gantry angle | Annual | 2% of OAFs at IEC gantry 0° | Y/N | |
| D11 | Arc mode (expected MU, degree) | Annual | 2% of MU and 2° | Y/N | |
| D12 | Special procedure mode (TBI/TSET) | Annual | Output: same as regular beam; energy: same as regular beam; profile: same as regular beam | Y/N | |
| Mechanical tests | |||||
| M1 | Localizing lasers |
Daily Monthly |
2 mm 1 mm |
Y/N Y/N |
|
| M2 | Optical distance indicator |
Daily Monthly |
2 mm at isocenter 2 mm over clinical range |
Y/N Y/N |
|
| M3 | Jaw position indicators |
Daily Monthly |
2 mm per jaw for single field 2 mm per jaw for clinical range of motion |
Y/N Y/N |
|
| M4 | Light to radiation field coincidence | After Service | 2 mm per jaw | Y/N | |
| M5 | Leaf position accuracy | Monthly | 1 mm | Y/N | |
| M6 | Gantry/collimator angle indicators | Monthly | 1° | Y/N | |
| M7 | Physical graticule (port film graticule) | Monthly | 2 mm | Y/N | |
| M8 | Cross‐hair centering | Monthly | 1 mm | Y/N | |
| M9 | Treatment couch positions (absolute and relative) | Monthly |
Abs: 2 mm and 1°; Rel: 1 mm over 10 cm and 0.5° over 3° |
Y/N | |
| M10 | Radiation isocentricity (MLC/jaw radiation isocenter with collimator, gantry, and couch rotation) | Annual | 2 mm diameterc | Y/N | |
| M11 | Electron applicator collimator settings/physical inspection/interlocks | Annual | Same as acceptance/TPS | Y/N | |
| M12 | Stereotactic accessories, lockouts, cone coding |
Daily Annual |
Functional Functional |
Y/NY/N | |
| M13 | Accessory latches/interface (all slots) | Annual | Functional | Y/N | |
| Safety tests | |||||
| S1 | Door interlock | Daily | Functional | Y/N | |
| S2 | Door closing safety | After Service | Functional | Y/N | |
| S3 | Audio/visual monitors | Daily | Functional | Y/N | |
| S4 | Beam‐on indicator | Daily | Functional Functional (all indicators) | Y/NY/N | |
| Annual | |||||
| S5 | Anticollision test |
Daily Monthly |
Functional (single point for system function) Functional (all collision interlocks) |
Y/N Y/N |
|
| S6 | Safety procedures | Determined by QMP | Functional | Y/N | |
| Wedge tests | |||||
| W1 | Electronic wedge check |
Daily Monthly |
Internal: functional; collimator shaped wedges: 3% 2% |
Y/N Y/N |
|
| W2 | Physical wedge placement accuracy | Monthly | 1mm | Y/N | |
| W3 | Wedge profile for 60 degree electronic wedges, all energies | Annual | 2% of TPS OAFs | Y/N | |
| W4 | Wedge dose for collimator shaped wedges, all angles | Annual | 2% of TPS dose | Y/N | |
| Comprehensive review of machine settings | |||||
| C1 | Comprehensive review of machine settings | Annual | Same as acceptance/expected | Y/N | |
a
Daily checks should be conducted for the energies used that day.
b
Tolerance is the same as what was achievable for TPS model comparison to measured data as at the time of commissioning.
c
For SRS‐SBRT applications, refer to the relevant AAPM Medical Physics Practice Guideline.
Signature of qualified medical physicist:
Date: