Table I.

Percentage differences of the mean dose and SDs calculated for depth ranges of 5–20 (gantry angles equal to 0° and 5°) or 5–15 cm (gantry angle equal to 45°) using the 6 and 15 MV photon beams with the calculated configuration as in Fig. 1. A negative value in the table means an underestimation of dose by the AAA and CCC compared to the MC. The field sizes are $4\times 4$ (6 MV), $7\times 7$ (15 MV), $10\times 10$ and $20\times 20\hspace{0.17em}{\text{cm}}^2$ and gantry angles are 0°, 5° and 45°.

	$4\times 4$ or $7\times 7\hspace{0.17em}{\text{cm}}^2$						$10\times 10\hspace{0.17em}{cm}^2$						$20\times 20\hspace{0.17em}{cm}^2$
Energy	0°		5°		45°		0°		5°		45°		0°		5°		45°
	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%	AAA%	CCC%
6 MV	$10.5\pm 1.3$	$3.4\pm 0.9$	$-15.1\pm 3.6$	$-3.7\pm 1.5$	$6.4\pm 0.6$	$21.3\pm 0.5$	$7.6\pm 2.6$	$2.1\pm 1.3$	$-3.2\pm 1.2$	$1.8\pm 3.8$	$9.0\pm 4.5$	$18.3\pm 7.0$	$16.3\pm 2.1$	$6.7\pm 2.1$	$3.7\pm 2.7$	$3.2\pm 1.6$	$17.6\pm 2.3$	$12.5\pm 2.4$
15 MV	$7.8\pm 1.6$	$4.6\pm 1.7$	$-12.0\pm 3.5$	$-7.6\pm 2.0$	$4.0\pm 0.7$	$9.1\pm 0.9$	$5.5\pm 1.2$	$1.7\pm 1.4$	$0.4\pm 2.2$	$0.6\pm 0.4$	$13.5\pm 2.8$	$19.6\pm 2.1$	$18.0\pm 1.3$	$8.3\pm 1.8$	$4.0\pm 1.7$	$-3.9\pm 1.7$	$22.6\pm 3.0$	$21.4\pm 3.9$