Radiotherapy planning system and method

A radiotherapy planning system for determining a solution corresponding to a fluence profile, the radiotherapy planning system comprising:

• an auto-planned solution generation unit for automatically generating one or more auto-planned treatment plans based on one or more dose quality metrics;
• a weight assignment unit configured to assign a predetermined plurality of weights to said one or more dose quality metrics;
• a weight adjustment unit configured to adjust a selected weight from said plurality of weights;
• and
• a Pareto frontier navigation unit configured to generate said solution corresponding to said fluence profile in response to said adjusted selected weight;
• wherein said radiotherapy planning system is configured to compare said solution to a clinical goal and wherein said radiotherapy planning system is further configured to generate a comparison signal indicative of whether or not said solution satisfies said clinical goal and to provide said solution as a warm start to generate a final auto-generated plan, if said comparison signal indicates that said solution does not satisfy said clinical goal.