Method of tumor radioactive particle layout for laser guided positioning

A radioactive particle, laser-guided technology, used in radiotherapy, X-ray/γ-ray/particle irradiation therapy, treatment, etc., can solve problems such as tissue damage and overlapping scope of action

Inactive Publication Date: 2019-01-11
成都真实维度科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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Embodiment 1

[0048] This embodiment provides a tumor radioactive particle layout method for laser-guided positioning. In the prior art, the TPS system is used in the particle layout stage, which can outline and confirm the tumor target area according to the image, and then perform particle layout. However, in the prior art, when the implant needle is actually inserted, the implant needle can only be inserted through the template fixation, and the number and position of the fixation holes on each template are limited, so when the particles are laid out, not only To ensure that the tumor can be completely covered, at the same time, it is also necessary to consider the difficulty of inserting the implant needle.

[0049] The method of this embodiment is to use the laser auxiliary equipment to guide the implantation needle to puncture and introduce the particles in the early layout method, and the laser auxiliary equipment is to irradiate the laser beam on the patient's body through the flexibl...

Embodiment 2

[0060] This embodiment is a tumor radioactive particle layout method for laser-guided positioning. The method in this embodiment is a pre-layout method that uses laser-assisted equipment to guide implantation needles to puncture and introduce particles. The laser-assisted equipment can be flexibly moved The laser transmitter emits a laser beam that is irradiated on the patient's body during the operation and is first marked at the same time. Then insert the corresponding implant needle at the marked point, and make the bright spot of the laser beam align with the end center point of the implant needle, so as to ensure that the implant needle and the laser beam are collinear during insertion. The existing template is replaced by laser beam guidance, so it can be adjusted arbitrarily to facilitate a more flexible layout by bypassing some specific tissues. And the specific steps of the layout method of this embodiment are:

[0061] For CT scanning of the patient's tumor, firstly...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1007
Inventor 王若雨曲飞寰周军王喆杨亮张翔韦振川
Owner 成都真实维度科技有限公司
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