Table 2.

Couch translations (relative to isocenter) and shifts determined by two‐dimensional–to–three dimensional marker‐matching software for gated images acquired using a moving phantom

Couch translation (cm)			Translation determined by software (cm)
Vert	Long	Lat	Vert	Long	Lat
$-1.0$	$-1.0$	$-1.0$	$-0.9$	$-1.1$	$-1.0$
1.0	1.0	1.0	1.0	1.0	1.0
$-2.0$	$-2.0$	$-2.0$	$-2.0$	$-2.1$	$-2.0$
2.0	2.0	2.0	2.1	2.0	2.1

$\text{Vert}=\text{vertical}$ direction (up–down); $\text{Long}=\text{longitudinal}$ direction (in–out); $\text{Lat}=\text{latitude}$ direction (left–right).