Samples of a three-dimensional view are depicted from anterior to inferior for a single patient from the initial CT (a) and the first (b), second (c), and third (d) repeat CT sets.
The target structure (GTV, PTV, and PTV-POV), OAR, and POV are illustrated (a). A sample of the IMRT dose distribution on the initial CT for patient #1 at the prescription dose of 51 Gy with a 5-mm POV margin is depicted (b).
An example of the organ movements between the simulation CT day and the day of the third repeat CT scan are contoured for two patients #1 (a) and (b) and #2 (c) and (d). All of the structures are drawn on the third repeat CT scan.
Dose-volume constraints for the IMRT plan.
The initial and recalculated dose parameters for each CT set.
Descriptive statistics of clinical factors of interest (used as independent variables).
Results of the univariate and multivariate regression analyses.
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