Abstract:
This paper proposes the use of an interactive decision support system to guide the treatment
planning process for external beam radiation therapy. Based on multicriteria optimisation
our research treatment planning software Carina calculates efficient (also called Pareto
optimal) treatment plans. These are stored in a database and accessed for evaluation by
the treatment planner. The interactive component consists of navigation among the precalculated
plans using free search, fine search and exact search as well as sensitivity analysis,
which extracts dose dependence information for all structures from the plan database. As a
result, plan quality is improved by finding advantageous trade-offs in competing treatment
plans, trial-and-error is avoided, and effectiveness of treatment planning is increased.