Quasi-Constrained Multicriteria Optimization for Treatment Planning in Radiation Therapy
نویسندگان
چکیده
منابع مشابه
Radiation Therapy Planning by Multicriteria Optimisation
Radiation is one of the major forms of treatment in cancer therapy besides chemotherapy and surgery. The determination of a treatment plan is a complex task that involves finding directions of beams, beam intensities and a realisation of optimal intensities on the equipment. In this talk we focus on determination of beam intensities. Dose distributions must satisfy the conflicting goals of effe...
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Here, a quasi-Newton algorithm for constrained multiobjective optimization is proposed. Under suitable assumptions, global convergence of the algorithm is established.
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PURPOSE To eliminate or reduce the error to Pareto optimality that arises in Pareto surface navigation when the Pareto surface is approximated by a small number of plans. METHODS The authors propose to project the navigated plan onto the Pareto surface as a postprocessing step to the navigation. The projection attempts to find a Pareto optimal plan that is at least as good as or better than t...
متن کاملDiscrete Optimization Problems for Radiation Therapy Planning
A well-studied problem in intensity modulated radiation therapy (IMRT) is the representation of a given intensity matrix, i.e. a matrix of nonnegative integers, as a nonnegative linear combination of special 0-1-matrices, called segments. These segments can be practically realized by multileaf collimators (MLC). One important aim is the minimization of the sum of the coefficients of the linear ...
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ژورنال
عنوان ژورنال: International Journal of Radiation Oncology*Biology*Physics
سال: 2016
ISSN: 0360-3016
DOI: 10.1016/j.ijrobp.2016.06.2361