Fig. 4.
Gross tumor volume coverage (GTV) (a) and minimum dose to GTV (b), calculated from the estimated delivered dose distributions for all patients. The minimum dose is dose to 0.03 cm3 rather than to a single voxel. The delivered dose distribution is estimated by applying the mean target shift during treatment to the entire patient anatomy in planning computed tomography. In all cases, the GTV is well covered by the prescription dose. AP = anterior-posterior; LR = left-right; SI = superior-inferior.