FIG. 6.

(a) Tumor localization discrepancy before motion correction (NoCorr-CBCT), after motion correction derived from RCCT at treatment [RMC-CBCT(tx)], and after correction derived from RCCT at simulation [RMC-CBCT(sim)]. (b) Difference in localization discrepancy between RMC-CBCT(tx) and NoCorr CBCT, and between RMC-CBCT(tx) and RMC-CBCT(sim) CBCT. In both plots, tumor cases are sorted in order of increasing difference in localization discrepancy (RMC-CBCT(tx) minus NoCorr). Column bars indicate mean localization discrepancy from five measurements; error bars indicate standard deviation. Asterisks indicate cases in which tumor EE-to-EI excursion in the RCCT at treatment is 5 mm or more.