Table 4.

Comparison in average passing rates (%) between iPlan MC‐calculated and MatriXX dose distributions without and with “central correction” or “entire correction” at $\theta =0°–180°$ for $10\hspace{0.17em}\times \hspace{0.17em}10\hspace{0.17em}{\text{cm}}^2$, $15\hspace{0.17em}\times \hspace{0.17em}15\hspace{0.17em}{\text{cm}}^2$, and $20\times 20\hspace{0.17em}{\text{cm}}^2$ fields with (a) 6 MV and (b) 10 MV photons. Gamma evaluation was performed with 2% dose difference and 2 mm distance‐to‐agreement (DTA) criteria.

(a).
	Angular Correction
Field Size (cm 2 )	No Correction	Central Correction	Entire Correction
$10\times 10$	64.7	91.4	93.1
$15\times 15$	63.4	92.0	94.4
$20\times 20$	58.8	90.1	94.3

(b).
	Angular Correction
Field Size (cm 2 )	No Correction	Central Correction	Entire Correction
$10\times 10$	64.3	91.7	93.0
$15\times 15$	60.3	93.3	94.6
$20\times 20$	56.7	93.8	95.6