Markerless Lung Tumor Motion Tracking by Dynamic Decomposition of X-Ray Image Intensity

Table 1

Motion tracking errors in millimeter for clinical cases.

Methods	Case 1	Case 2	Case 3	Average	Std. dev.
Without extraction	2.339	1.222	1.602	1.721	0.463
Proposed extraction	0.577	1.004	0.641	0.741	0.230