A representative slice of the male pelvic CT showing the contoured organs for computing the dose plan and the registration region of interest (box).
The prostate dose plan calculated on the patient’s first CT.
(a) An example map of the DVF error arising from the variable registration region of interest and (b) a random white noise error map with the same RMS error.
The PCA eigenvalue spectra for the validation set of 50 spatially-correlated error maps, the synthetic sample set of 50 correlated error maps, and a set of 50 random uncorrelated error maps with the same RMS error.
PCA eigenvalue spectrum versus number of samples in the training set.
The dose mapping errors due to (a) the PCA model of DIR error for spatially-correlated errors and (b) random spatial errors with the same RMS magnitude.
The correlation between the dose mapping errors due to correlated DIR errors and those due to random spatial errors, (a) from the entire dose distribution and (b) selected from the regions of higher dose gradient.
The frequency distributions of dose mapping errors for our two models of DIR uncertainty.
The local spatial correlation between the dose mapping error due to spatially-coherent DIR errors and that due to random white noise DIR errors.
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