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- W1990130410 abstract "Conventional inverse treatment planning attempts to calculate dose distributions that may not be feasible given the specified dose levels to various anatomical structures. A technique for inverse treatment planning has been developed that uses only target dose levels which are easily selectable to be feasible. A nonlinear constrained minimization problem is formulated to reflect the goal of sparing critical organs as much as possible while delivering a certain target dose within specified uniformity. The objective function is the squared dose delivered to critical organs. The constraints require the delivery of certain target dose within specified uniformity and non-negative pencil beam weights. A continuous penalty function method is introduced as a method for solving the large-scale constrained minimization problem. The performance of the continuous penalty function method is optimized by numerical investigation of few numerical integration schemes and a pair of weighting functions which influence the utility of the method. Clinical examples are presented that illustrate several features of the technique. The properties of the continuous penalty function method suggest that it may be a viable alternative to conventional inverse treatment planning." @default.
- W1990130410 created "2016-06-24" @default.
- W1990130410 creator A5049688948 @default.
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- W1990130410 date "1998-02-01" @default.
- W1990130410 modified "2023-10-06" @default.
- W1990130410 title "A continuous penalty function method for inverse treatment planning" @default.
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- W1990130410 doi "https://doi.org/10.1118/1.598183" @default.
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