Radiotherapy dose planning method and system for implanting particles into tumor, and medium

Abstract

The invention discloses a radiotherapy dose planning method and system for implanting particles into a tumor, and a medium, and is used for a radiotherapy interventional surgical robot in radioactive particles. The method comprises the following steps: obtaining medical image information; a medical image multi-organ segmentation step of performing multi-organ segmentation on the medical image, including labeling one or more organs on the medical image; a puncture needle path planning step: limiting a feasible path of a puncture needle based on the marked organ and the virtual needle insertion panel; a radioactive particle radiation dose calculation step: calculating the radiation dose of the radioactive particles in the in-vivo environment; and a radioactive particle source arrangement dose optimization step: optimizing the number and spatial positions of the implanted particles according to the radiation dose of the particles and the form and volume of the tumor focus to obtain a particle source arrangement result with the accumulated radiation dose meeting the set dose. According to the invention, radiation particle dose distribution meets clinical requirements.

Description

technical field [0001] The invention relates to the technical field of medical image processing, and the field of intratumoral radiotherapy dose calculation and optimization, and in particular to a method, system and medium for particle implantation intratumoral radiotherapy dose planning. Background technique [0002] Malignant tumor has become a common multiple disease that seriously threatens human health, and its main treatment methods include surgery, chemotherapy and radiation therapy. Among them, radiotherapy uses high-energy rays emitted by radioactive sources to continuously inhibit the mitosis of tumor cells, thereby achieving a therapeutic effect. Compared with ordinary external radiation therapy, radioactive seed implantation internal radiation therapy can greatly increase the radiation dose to tumor lesions, while reducing the radiation received by patients' normal organs and tissues, and has a high local control rate for malignant tumors, and post-treatment com...

AI Technical Summary

Problems solved by technology

However, in the traditional treatment dose planning system, the delineation of target organs requires a lot of manual operations, and for some organs in CT images, due to the low contrast between the organs and surrounding tissues, and the shape is changeable, even manual segmentation is very difficult

At the same time, the dose calculation and dose optimization of radiation particles are also the key to the success of interventional surgery in internal radiotherapy. Traditional methods are difficult to make the dose distribution meet the clinical requirements, and it is easy to appear cold and hot areas of dose radiation.

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