Table 1.

Passing rates between MapCHECK and TPS calculated dose distributions and MatriXX and TPS calculated dose distributions for three 6 MV IMRT fields and three 18 MV IMRT fields. Both the original TPS calculated dose distributions and the TPS calculated dose distributions convolved with a Gaussian with a σ of 2.5 mm were used to compare with the MatriXX measured dose distributions.

	MapCHECK with TPS		MatriXX with TPS (Original)		MatriXX with TPS (Convolved)
	$3\%/3\hspace{0.17em}\text{mm}$	$2\%/2\hspace{0.17em}\text{mm}$	$3\%/3\hspace{0.17em}\text{mm}$	$2\%/2\hspace{0.17em}\text{mm}$	$3\%/3\hspace{0.17em}\text{mm}$	$2\%/2\hspace{0.17em}\text{mm}$
6 MV Field A	98.3%	94.4%	98.1%	93.3%	100.0%	96.1%
6 MV Field B	100.0%	96.8%	97.6%	90.5%	99.2%	94.8%
6 MV Field C	99.6%	96.1%	97.9%	92.7%	98.8%	95.3%
Average (6 MV)	99.3%	95.8%	97.9%	92.2%	99.3%	95.4%
18 MV Field A	97.8%	94.9%	96.3%	91.4%	96.9%	94.3%
18 MV Field B	95.3%	93.2%	93.6%	89.8%	95.2%	93.9%
18 MV Field C	99.7%	96.1%	95.8%	90.7%	97.6%	95.1%
Average (18 MV)	97.6%	94.7%	95.2%	90.6%	96.6%	94.4%