Table 4.

Novalis Tx SN-5479 and TrueBeam STx SN-3169 output factor local differences for 6-MV mode

M	Jaw field size
	mm	8	12	22	32	42	60	80	100	140	220	254
L	5	2.3%	2.0%	2.1%	2.2%	2.3%	2.2%	2.3%	2.5%	2.4%	2.7%	2.7%
C	10	−2.4%	−1.1%	−1.1%	−1.1%	−1.2%	−1.1%	−0.9%	−0.9%	−0.8%	−0.5%	−0.5%
F	20		−2.6%	−1.6%	−1.2%	−1.1%	−0.9%	−0.9%	−0.9%	−0.7%	−0.5%	−0.3%
I	30			−1.2%	−0.7%	−0.6%	−0.5%	−0.4%	−0.3%	−0.2%	−0.1%	−0.1%
E	40				−0.7%	−0.3%	−2.0%	−1.4%	−0.6%	−0.4%	−0.4%	0.1%
L	60					−0.7%	−0.4%	−0.5%	−0.2%	0.0%	0.3%	0.3%
D	80							−0.1%	0.0%	0.1%	0.4%	0.4%
S	100								0.0%	0.1%	0.4%	0.3%
I	140									0.4%	0.4%	0.3%
Z	220										0.7%	0.7%
E	254											1.2%