Optimal control of a two-equation model of radiotherapy
MATHEMATICAL CONTROL AND RELATED FIELDS(2018)
摘要
This paper deals with the optimal control of a mathematical model for the evolution of a low-grade glioma (LGG). We will consider a model of the Fischer-Kolmogorov kind for two compartments of tumor cells, using ideas from Galochkina, Bratus and Perez-Garcia [10] and Perez-Garcia [17]. The controls are of the form (t(1),..., t(n);d(1),..., d(n)), where t(i) is the i-th administration time and d(i) is the i-th applied radiotherapy dose. In the optimal control problem, we try to find controls that maximize, in an admissible class, the first time at which the tumor mass reaches a critical value M-*. We present an existence result and, also, some numerical experiments (in the previous paper [7] we have considered and solved a very similar control problem where tumoral cells of only one kind appear).
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关键词
Fischer-Kolmogorov model,optimal control,tumor growth,radiotherapy
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