Table 2. Comparison of flatness and symmetry for the results obtained using the EBT3 film and ionization chamber.

	EBT3 film		Ionization chamber
	Flatness (%)	Symmetry (%)	Flatness (%)	Symmetry (%)
3 × 3 cm2	8.30	0.63	8.90	0.83
5 × 5 cm2	3.86	0.76	4.90	0.63
10 × 10 cm2	2.05	0.65	1.83	0.49
15 × 15 cm2	1.96	0.71	1.71	0.75