Method of tumor radioactive particle layout for laser guided positioning

Abstract

The invention belongs to an implanted particle assisted positioning method, and discloses a method of tumor radioactive particle layout for laser guided positioning. The specific steps are as follows:obtaining a tumor image of a patient through scanning; determining tumor information according to the tumor image, and determining radiotherapy area; according to the confirmed treatment region image, obtaining a three-dimensional region model; and for the three-dimensional region model, determining the puncture path particle selection, particle layout, particle number and location information for laser-guided positioning puncture. At first, that invention synthesize a plurality of tomograms of the tumor region of the patient through software to form an intuitionistic and accurate three-dimensional map of the tumor region, and the map contains coordinate information of all pixel points, which is favorable for accurate layout and positioning of particle, thereby achieving better stroking effect and carrying out accurate dose control.

Description

technical field [0001] The invention belongs to the technical field of radiation particle implantation, and in particular relates to a particle layout method for assisting radiation particle implantation. Background technique [0002] The full name of seed implantation is "radioactive seed implantation therapy technology", which is a treatment method that implants a radioactive source into the tumor to destroy the tumor. Particle implantation therapy involves a radioactive source, the core of which is radioactive particles. What is now clinically used is an isotope called iodine-125. Each iodine-125 particle is like a small sun, with the strongest rays near the center, minimizing damage to normal tissue. Radioactive seed implantation therapy mainly relies on a stereotaxic system to accurately implant radioactive seeds into the tumor body, and emits continuous, short-distance radiation through a miniature radioactive source, so that the tumor tissue is destroyed to the maxi...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of particle layout due to template-guided implant needle puncture in the prior art, the number and position of implant needles not only cause tissue damage, but also need to inject too many particles into the same needle, resulting in a large overlap of action ranges. Problem, the present invention provides a layout method that can be flexibly deployed in the laser-guided tumor implantation method to reduce the number of implanted particles as much as possible while ensuring a good radiotherapy effect