Table 7.

Hypothetical clinical target volume to planning target volume margins expansion (M) for the three axes components and in three dimensions (3D), based on root mean square of the system isocentric inaccuracy 8 and patient motion displacement ${\mathrm{\Delta }}_{95}^{\mathrm{d}}$ from the 15‐minute experiments ^a

Subj.	X (LR)		Y (SI)		Z (AP)		3D Vector
	${\mathrm{\Delta }}_{95}^x$	$M_x$	${\mathrm{\Delta }}_{95}^y$	$M_y$	${\mathrm{\Delta }}_{95}^z$	$M_z$	${\mathrm{\Delta }}_{95}^{3\mathrm{D}}$	$M_{3\mathrm{D}}$
1	0.2	0.3	0.4	0.7	0.4	1.1	0.4	1.2
2	0.1	0.2	0.2	0.6	0.4	1.1	0.4	1.2
3	0.6	0.6	0.8	1.0	2.6	2.8	2.6	2.8
4	0.2	0.3	0.5	0.8	0.4	1.1	0.5	1.2
5	0.3	0.8	1.4	2.6	0.7	1.2	2.9	3.3

^aAll values in millimeters.

$\text{Subj}.=\text{subject}$; $\text{LR}=\text{left}—\text{right}$ $\text{SI}=\text{superior}—\text{inferior}$; $\text{AP}=\text{anterior}‐\text{posterior}$.