Afterloading radiotherapy dose inverse intensity-modulated optimizing calculation method and system
A technology for optimizing calculation and dose, applied in radiation therapy, calculation, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of insufficiency, lack of reverse intensity modulation optimization function of afterload radiation dose, and high price. To achieve the effect of optimizing the gradient
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[0118] S1. Outline the range of the tumor target area on the after-loaded CT image, obtain several images of the tumor target area, and then perform three-dimensional reconstruction of the applicator;
[0119] S2. Calculate all stagnation points on the applicator according to the preset interval ΔL=2.5mm, and activate the stagnation points within the range of the tumor target area;
[0120] S3. Count the number N of activated stationary points and the number M of images of the tumor target area within the range of the tumor target area, and calculate the number of selected dose reference points on each image P=int(N / M);
[0121] S4. Set the maximum search times k of the outer loop max , and set the initial search times k=1;
[0122] S5. In each image of the tumor target area, randomly select P dose reference points; if there is no intersection between the outline of the tumor target area and the outline of the organ at risk, the P dose reference points are all randomly select...
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