Treatment planning reverse planning method and treatment planning system
A technology of treatment planning and planning, which is applied in the direction of X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of high experience and skill requirements of plan designers, limited collimator size, time-consuming and other problems, so as to reduce the amount of calculation and improve Optimized efficiency, the effect of accelerating evolutionary efficiency
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[0077] One embodiment, wherein step 104 further includes: expanding the volume of the target body outward to a preset first range Ex1 to form a first expansion area V of the target body ex1 ; Set the target volume in the first expansion zone V ex1 Expand the preset second range Ex2 outward to form the second expansion area V of the target body ex2 ,Such as figure 2 shown.
[0078] In one embodiment, for a single healthy tissue / organ-at-risk, the reverse planning goal includes: prescription dose D p , healthy tissue / organ-at-risk limiting dose D m ; its fitness can be calculated by the following formula:
[0079] f ( k ) = a V t + bV s + c V total V p V 0
[0080] ...
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