Symmetric tree-shaped model for evenly implanting medical radioactive seeds

Abstract

The invention discloses a symmetric tree-shaped model for evenly implanting medical radioactive seeds. The symmetric tree-shaped model comprises a tumor body model; a plurality of slices are arranged in the tumor body model; a main puncture canal, four secondary puncture canals and seven radioactive seed implantation points are arranged in each slice; connecting lines of six of the seven radioactive seed implantation points in each slice form a regular hexagon; the seventh radioactive seed implantation points are located at the centers of the regular hexagons; the main puncture canals of all the slices are superposed. As the technical solution is adopted by the symmetric tree-shaped model disclosed by the invention, according to a radiation radius of each radioactive seed, volume of a tumor and an even distribution law of seed implantation, firstly, the tumor is divided into several slices, a simple, practical and operable three-dimensional mathematical geometrical model is established in each slice, and a relationship among distance between every two seeds, the connecting lines and the main puncture canals is found out, and therefore the goal that even implantation is finished by puncturing the tumor once is achieved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a symmetrical tree model for uniform implantation of medical radioactive particles. Background technique [0002] Malignant tumors are one of the most important causes of death for humans today, and nearly 80% of patients are diagnosed with advanced tumors, which lead to loss of opportunity for surgery. New radionuclides in recent years 125 The successful development of I particles and the advancement of imaging technologies such as ultrasound, CT and magnetic resonance have enabled the rapid development of radioactive particle brachytherapy for tumors and become a popular radiotherapy technology for tumor treatment. Currently, the domestic 125 There are not a few medical institutions with I particle implantation treatment technology. There are various implantation methods, but most of them lack strict distribution control methods. Implantation with a template and several rows o...

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Problems solved by technology

Currently, the domestic 125 There are not a few medical institutions with I particle implantation treatment technology. There are various implantation methods, but most of them lack strict distribution control methods. Implantation with a template and several rows of puncture needles at the same time will undoubtedly increase the pain of the patient and the incidence of complications; Uneven distribution, cold spots and hot spots appear, affecting the treatment effect, more puncture times, the number of times the puncture needle enters and exits the pleura is directly related to the occurrence of pneumothorax and hemothorax, there are many complications, and the medium and long-term treatment effect of the tumor is not good

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