Table 1.

Novalis Tx and TrueBeam STx dosimetric match analysis

Energy (MV)	Data	Field size (cm×cm)	Novalis Tx 5445	Novalis Tx 5479	Novalis Tx 6140	TrueBeam STx 3169
6	TPR	3×3	0.539	0.535	0.537	0.535
	20/10	10×10	0.578	0.575	0.571	0.574
		30×30	0.630	0.634	0.640	0.630
SRS-6	TPR	6×6	0.547	0.542	0.547
	20/10	10×10	0.571	0.568	0.569
		15×15	0.590	0.594	0.594
10	TPR	6×6		0.615	0.610	0.613
	20/10	10×10		0.632	0.630	0.633
		30×30	0.674	0.678	0.671

TPR: Tissue-phantom ratio