Table 1.

Parameters of simple plans: static and arc delivery with various gantry angles for 6 MV and 10 MV photons. The field sizes were $10\hspace{0.17em}\times \hspace{0.17em}10\hspace{0.17em}{\text{cm}}^2$, $15\hspace{0.17em}\times \hspace{0.17em}15\hspace{0.17em}{\text{cm}}^2$, and $20\hspace{0.17em}\times \hspace{0.17em}20\hspace{0.17em}{\text{cm}}^2$.

Plan No.	Delivery	Field Size (cm 2 )	Gantry Angle, θ (degrees)
1	Static	$10\times 10$, $15\times 15$, $20\times 20$	0°, 180°
2	Static	$10\times 10$, $15\times 15$, $20\times 20$	90°, 270°
3	Static	$10\times 10$, $15\times 15$, $20\times 20$	0°, 90°, 180°, 270°
4	Static	$10\times 10$, $15\times 15$, $20\times 20$	60°, 120°, 240°, 300°
5	Static	$10\times 10$, $15\times 15$, $20\times 20$	45°, 90°, 135°, 225°, 270°, 315°
6	Arc	$10\times 10$, $15\times 15$, $20\times 20$	185° to 175°