Patent ID: 6719683
Filing Date: 2004-04-13
Classification: A61N

Abstract:
An inverse planning method for radiotherapy treatment of a target volume in a body, said method comprising:identifying a first objective function indicating a desired distribution of dose in a plurality of volume elements within the target volume; identifying a second objective function indicating a desired distribution of dose in a plurality of volume elements within the non-target volume; using a computer to calculate results of multiple treatment solutions at two or more discrete calculations with different risk organ weightings; and simultaneously displaying the calculated results for at least two of the treatment solutions for comparison by a treatment planner to enable the treatment planner to select a desired one of the treatment solutions; and wherein the multiple treatment solutions are obtained from calculations combining non-constrained and constrained steps with variable weighting, thereby enabling consideration of the objective functions without eliminating the possibility to improve the treatment plan beyond the objective functions.