Efficient treatment plan trade-off analysis

1. A treatment planning system comprising:

a planning image memory which stores a volume diagnostic image of a subject;

a memory for storing user defined clinical objectives configured for a user to input data defining the clinical objectives including a target dose and organs-at-risk doses;

a processor configured to:

generate a candidate treatment plan based on the clinical objectives;

evaluate the candidate treatment plan against the clinical objectives;

for each of the clinical objectives that are not met, generate a trade-off treatment plan which more closely meets each of the not met clinical objectives;

determine an effect which each of the trade-off treatment plans has on met and other not met clinical objectives; and

at least one of (i) control a display to display at least a part of the volume diagnostic image indicating doses the candidate and each trade-off treatment plan delivers to a target and to each of the organs-at-risk so that a user can select among the candidate and trade-off plans to be used to treat the subject and (ii) re-evaluate the candidate and the trade-off plans against the clinical objectives.

2. A treatment planning system comprising:

a planning image memory which stores a volume diagnostic image;

a memory for storing user defined clinical objectives configured for a user to input data defining the clinical objectives including a target and organs-at-risk and;

at least one processor configured to:

generate a candidate treatment plan based on the clinical objectives;

evaluate the candidate treatment plan against the clinical objectives;

when one or more of the objectives are not met, perform a trade-off analysis to determine an effect on met and other not met clinical objectives;

receive a priority ranking for each objective; and

generate a plurality of trade-off plans which meet higher priority objectives and meet lower priority objectives to different degrees.

3. The system according to claim 2 , further including:

a display device configured to display the trade-off plans to the user showing trade-off areas and values.

4. The system according to claim 2 , wherein the at least one processor is further configured to:

evaluate the trade-off plans using dose volume histogram overlap analysis.

5. The system according to claim 2 , wherein the at least one processor is further configured to:

update a machine learning database based on the plurality of trade-off plans.

6. A method for generating trade-off plans for radiation therapy treatment planning, comprising:

in one or more memories, storing a volume diagnostic image;

with an input device, inputting user-defined clinical objectives including a target and organs-at-risk and priorities for the clinical objectives;

storing the user-defined clinical objectives and the priorities in the one or more memories;

with one or more processors, generating a candidate treatment plan based on the clinical objectives including the target, the organs-at-risk, and the priorities;

with the one or more processors, evaluating the candidate treatment plan against the clinical objectives and the priorities;

with the one or more processors, when one or more of the objectives are not met, performing a trade-off analysis to determine an effect on met and not met clinical objectives;

with the one or more processors, generating a plurality of trade-off plans which meet higher priorities and lower priority objectives to different degrees; and

controlling a display device to display the plurality of trade-off plans showing trade-off areas and values in conjunction with at least a portion of the diagnostic image.

7. The method according to claim 6 , wherein generating the candidate plan includes:

automatically formulating the clinical objectives including dose profiles and the priorities corresponding to the target and the organs-at-risk;

optimizing a plurality of treatment plan parameters based on the higher and lower priority objectives to generate the candidate treatment plans; and

generating the trade-off plans includes:

reformulating the clinical objectives including at least one of modifying parameters of the clinical objectives and/or adding one or more additional objectives to the clinical objectives; and

repeating the optimizing based on the reformulated clinical objectives to reformulate the trade-off plans.

8. The method according to claim 6 , further including:

reevaluating the trade-off plans against the clinical objectives for the organs-at-risk.

9. The method according to claim 8 , further including:

selecting a plan from the trade-off plans and the candidate treatment plan.

10. A non-transitory computer readable medium carrying software for controlling the one or more processors to perform the method of claim 6 .