Radioactive particle implanting template and fabrication method thereof

Abstract

The invention relates to a radioactive particle implanting template and a fabrication method thereof. The fabrication method comprises the following steps: (1) collecting image data of tumor parts of a patient through a scanning system; (2) reading the image data obtained in the step (1) by a treatment planning system, and establishing a radioactive particle implanting plan according to the image data to obtain picture data containing the position, number, direction of needle passages and particle distribution information; (3) processing the image data by an image control system and a template design system on the basis of the picture data containing the position, number, direction of needle passages and particle distribution information in the step (2), and designing to obtain a digital template model containing patient face shape information and the position, number and direction distribution information of the needle passages; and (4) performing entity shaping by a template shaping system based on the digital template model obtained in the step (3) as a template, and preparing to obtain the entity radioactive particle implanting template. The radioactive particle implanting template is accurate and stable in positioning, and basically eliminates positioning error.

Description

technical field [0001] The invention relates to the field of tumor treatment equipment, in particular, the invention relates to a template for implanting radioactive particles and a manufacturing method thereof. Background technique [0002] As a type of radiation therapy, radioactive seed brachytherapy has the advantages of minimally invasive, highly "conformal", high local tumor control rate, and few complications. Radioactive particle brachytherapy has been widely used in the treatment of prostate cancer, breast cancer, head and neck malignant tumors, etc. Especially in the treatment of prostate cancer, the United States and some European countries have recommended 125 I radioactive seed implantation is the first choice for the treatment of early prostate cancer. [0003] Interstitial interstitial implantation of radioactive particles requires that the implant needle be implanted in parallel to the target area. The distribution of particles makes the dose in the target ...

AI Technical Summary

Problems solved by technology

However, due to the complex anatomical structure of the head and neck and its flexibility of movement, setup errors (deviations in position or angle between the patient and the template) are prone to occur when using conventional templates, which makes the treatment inconsistent with the plan and reduces the accuracy of treatment

As a result, the radiation dose in the target area may be reduced, and the dose received by normal tissues may be increased, which will affect the curative effect and increase complications at the same time.

This also reduces the application value of conventional templates and hinders the application of radioactive particle brachytherapy in the treatment of malignant tumors of the head and neck.

However, if no template is used, it is difficult to meet the requirements of precise implantation during implantation, and it is easy to make the dose distribution not up to standard

[0005] In addition, the above-mentioned problems not only exist in the treatment of malignant tumors of the head and neck, but also in tumors at other locations. Due to the differences in the location and shape of the tumors, it is also very easy to implant radioactive particles using conventional templates. Set-up error (deviation of template position or angle) occurs. Therefore, in order to obtain good curative effect in the treatment of malignant tumors, the precise implantation of radioactive particles becomes the key. To achieve the stated purpose, the conventional template currently used must be and device improvements

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