Table 1.

Treatment planning system commissioning parameters for AAA.

AAA Dose Calculation Components	TPS Parameters	Errors Implemented
Primary Photons	Output Factors	Incorrect SAD
	Depth Dose Curves	Flattening Filter Material
	Beam Profiles	TMR input as PDD
	Spectrum Parameters	Smoothed Dose Profiles
Secondary Photons	Mean Radial Energy
	Size of Second Source
	Relative Intensity
	Energy of Second Source
Electron Contamination	Electron Contamination ${\sigma }_0$	Change in ${\sigma }_1$
	Electron Contamination ${\sigma }_1$
	Relative Fraction
MLC Parameters	Dosimetric Leaf Gap	MLC DLG Error
	Transmission Factor	Transmission Factor Error