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Process for automatically determining the configuration of a stereotactic radiosurgery helmet to which can be fitted a plurality of collimators focused on an irradiation isocenter
Process for automatically determining the configuration of a stereotactic radiosurgery helmet to which can be fitted a plurality of collimators focused on an irradiation isocenter
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机译:自动确定立体定向放射外科手术头盔的配置的过程,可以安装多个聚焦在辐照等中心线上的准直仪
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摘要
Process for determining the configuration or configurations [treatment time (TT.sub.i)/diameter (&phgr;.sub.i,f) of each collimator] of a helmet for stereotactic radiosurgery, to which can be fitted an plurality of collimators focused on an irradiation isocenter, consisting in automatically optimizing, through iterative dose calculation, the dose (D. sub.p) received at predetermined optimization points (M.sub.p), by modifying, in the course of the successive iterations, the treatment time (TT.sub.i) of at least one shot (i) and the diameter (&phgr;.sub.i, f) of at least one collimator (C.sub.f) of at least one shot (i), and by calculating, at each iteration, an objective function (OF) having as variables the differences between the calculated dose (D.sub.p) and the expected dose (ED.sub.p) for each point of optimization (M.sub.p), iterative calculation of the doses being carried out automatically until the objective function (OF) satisfies a predetermined optimization criterion.
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