Table 1.

Changes in chest wall (AP) and diaphragm (SI) motion amplitudes and their effects on tumor localization accuracy. The first two columns show the two motions being varied in tandem and the next three columns show tumor localization errors in each direction. The last column depicts 3D error in tumor centroid position. The result for training data is shown in bold. Localization errors are means taken over the phase indexes, with corresponding standard errors.

Magnitude (mm)		Localization error (mm)
SI	AP	LR	AP	SI	3D
5	3.3	0.1 ± 0.1	0.5 ± 0.3	0.3 ± 0.2	0.5 ± 0.4
10	6.6	0.2 ± 0.1	0.3 ± 0.2	0.2 ± 0.2	0.4 ± 0.3
15	9.9	0.2 ± 0.1	0.6 ± 0.6	0.3 ± 0.4	0.8 ± 0.7
20	12	0.4 ± 0.3	0.8 ± 0.6	1.0 ± 0.8	1.3 ± 1.1
25	15	0.5 ± 0.5	0.8 ± 0.8	1.2 ± 1.2	1.5 ± 1.5
30	18	0.7 ± 0.5	0.8 ± 0.7	1.1 ± 1.1	1.5 ± 1.4