QA

Who does Daily QA checks

Therapist

Who does monthly and annual QA checks

Physics

CT number for accuracy with water is checked on a ______ basis

Daily

Beam Symmetry and Flatness are defined over ____% of the field

80

Interlock systems ensure the safety for who?

• Patient

• Staff

• Machine

How often do you do QA for Gantry collision

Monthly

How often do you do QA for electron Cone collision

Annually

How often do you do QA for Imager collision

Daily

How often do you do QA for Safety Lights

Daily

How often do you do QA for Emergency Off

Monthly

How often do you do QA for AV Systems

Daily

How often do you do QA for Radiation Output

Daily

Tolerance for Radiation Output

3%

Tolerance for Beam Flatness and Symmetry

2%

How often do you do QA for Light Field Congruence

Monthly and After Bulb Change

Tolerance for Light Field Congruence: Asymmetric Jaws

1mm

Tolerance for Light Field Congruence: Symmetric Jaws

2mm

How often do you do QA for Lasers

Daily

Tolerance for Lasers: Non-IMRT

2mm

Tolerance for Lasers: IMRT

1.5mm

Tolerance for Lasers: SRS/SBRT

1mm

Tolerance for Lasers: CT Sim

2mm

How often do you do QA for ODI

Daily

Tolerance for ODI

2mm

How often do you do QA for Collimator Indicator

Daily

Tolerance for Collimator Indicator: Non-IMRT/IMRT

2mm

Tolerance for Collimator Indicator: SRS/SBRT

1mm

How often do you do QA for MLCs

Weekly

How often do you do QA for Gantry and Collimator Mechanical Rotation

Annually

How often do you do QA for Gantry and Collimator Radiation Iso Rotation

Annually

How often do you do QA for Gantry and Collimator Angles

Monthly

Tolerance for Gantry and Collimator Angles

1°

Level 1 Action

• What to do?

• Out of tolerance?

• Inspection

• Not out of tolerance

Level 2 Action

• What to do?

• Out of tolerance?

• Schedule Maintenance ASAP

• Close to Tolerance

Level 3 Action

• What to do?

• Out of tolerance?

• No treatment, Immediate action

• Out of tolerance