Figure 6.

Example of DE fluoroscopy to improve lung tumor tracking. (A) The relative target motion is plotted against time where the y-coordinate of ground truth trace is compared with tracked y-coordinate obtained from SE and DE images. (B-D) SE frames from the locations (i, ii, iii) indicated in (A). (E-G) DE frames from the locations (i, ii, iii) indicated in (A). The tracked position of target is indicated by the highlighted contour and the ground-truth tumor position is indicated by the dashed outline (Bar = 1 cm). Better tracking is observed on using DE frames. Adapted with permission from reference Patel et al.⁷⁹