Table 4.

Percentage difference in MUs compared to the kV CT plan prescribed to a point at mid‐plane

	kV CBCT (TrueBeam)	kV CBCT (Versa)	MV CBCT (Artiste)	MV CT (Tomo)
Water Cylinder	$-0.82$	2.46	0.82	0.00
Water Pelvis	$-0.13$	0.00	$-0.93$	0.66
Head	2.35	$-0.59$	$-0.59$	0.00
Neck	$-0.62$	$-1.23$	1.23	$-1.23$
Hip	$-3.02$	$-2.63$	$-2.10$	$-3.15$