Appendix A. Quality Control Program

A.      Mechanical Tests

1.        Patient support assembly motions

2.        Gantry angle indicators

3.        Optical distance indicators

4.        Alignment lights

5.        Congruence of radiation beam and light field

6.        Accuracy of field size indicators

7.        Mechanical isocenter- gantry and collimator

8.        Mechanical interlocks

B.       Radiation Beam Tests

1.        Machine operating parameters,

2.        Dose per monitor unit for x-ray and electron beams,

3.        Dose per degree for moving beam therapy,

4.        Radiation isocenter,

5.        Flatness and symmetry,

6.        Wedge transmission factors,

7.        Shadow tray transmission factors,

8.        Energy check on central axis,

9.        Radiation output versus field size.

C.      Control Panel Checks

1.        Radiation “ON” condition,

2.        Indicator lamp check,

3.        Computer control of accelerator,

4.        Interlock display,

5.        Digital display,

6.        Analog display,

7.        Status display,

8.        Reset display.

D.      Facility Checks

1.        Patient audio-visual communication,

2.        Entrance door interlock,

3.        Warning lights,

4.        Emergency off button.

E.       Dose Output Check

1.        Each registrant shall use the services of a third party authorized medical physicist or third party TLD system to verify the accelerator’s radiation output every two years.

2.        If the output check is not within plus or minus 5 percent of the calibrated output, the accelerator shall be recali- brated and the discrepancy investigated.

3.        Records of output checks shall be maintained for three years.

F.       Patient Dosimetry Calculation Checks

1.        Calculation of patient treatment times

2.        Computer calculation of patient treatment times

Historical Note

New Appendix made by final rulemaking at 9 A.A.R. 4302, effective November 14, 2003 (Supp. 03-3).

Amended by final rulemaking at 15 A.A.R. 1023, effec- tive August 1, 2009 (Supp. 09-2).