Table 1.

Percentage depth dose measured/estimated from parallel plate chamber (PPC), EBT3 films, and PRIMO MC (Monte Carlo code name) for a 6 MV photon beam for 0º gantry angle.

Depth (mm)	PPC measured value				EBT3 Films measured value				PRIMO MC simulated results
	5×5	10×10	15×15	20×20	5×5	10×10	15×15	20×20	5×5	10×10	15×15	20×20
0	14.78	19.87	25.83	31.54	14.20	19.14	25.14	30.90	13.29	17.98	23.09	28.47
1	45.84	46.92	51.96	55.70	45.55	46.69	51.50	54.76	43.55	44.74	49.26	52.92
2	61.96	63.24	68.13	71.50	61.21	63.56	67.89	71.65	59.94	61.48	65.06	68.18
3	73.14	75.46	78.20	81.75	72.29	77.39	77.92	81.59	70.99	72.50	75.85	78.23
4	82.03	82.83	86.37	87.63	81.21	84.87	85.41	87.56	79.21	80.98	83.19	85.27
5	86.83	88.10	90.39	91.47	85.82	87.70	90.32	91.72	84.98	86.69	88.62	90.17
7	93.94	94.72	95.74	96.26	93.01	94.31	95.80	96.81	92.49	93.31	95.04	95.96
10	99.17	99.14	99.70	98.80	98.13	98.98	99.62	99.10	97.93	98.62	99.16	99.63

PPC: Parallel plate chamber, EBT3: Brand name, PRIMO MC: Monte Carlo code name