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Three-dimensional image guided moving organ positioning method and system and storage medium

A moving organ and three-dimensional image technology, applied in the field of radiotherapy, can solve the problems of large extra radiation dose, high price, and increased risk of complications for patients, and achieve the effects of low extra radiation dose, low equipment cost, and low equipment price

Pending Publication Date: 2021-06-29
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing technology, the respiratory gating system can only predict the approximate displacement of some tissues and organs in the patient's body with the respiratory movement according to the patient's respiratory signal information. This technology cannot directly detect the movement of the tissues and organs in the patient's body, and does not Applicable to tissue and organ movements generated by other physiological movements in the patient's body
Implanting the gold label in the patient's body will cause secondary damage to the patient, so it is not suitable for weak and young patients, and the DR imaging system can only track the position of the implanted gold label, and cannot detect the tissue, organ and tumor target area. The 3D shape and coordinates do not realize 3D guidance in the true sense, and the other two intersecting DR imaging devices will add a large additional radiation dose to the patient, and the system is expensive
CBCT and orbital CT imaging systems will add additional high radiation dose to patients and increase the risk of patient complications, and CBCT image density resolution is low, the system is expensive, and the accuracy and speed of patient planning CT registration are not high.

Method used

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  • Three-dimensional image guided moving organ positioning method and system and storage medium
  • Three-dimensional image guided moving organ positioning method and system and storage medium
  • Three-dimensional image guided moving organ positioning method and system and storage medium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Based on artificial intelligence technology, such as figure 1 As shown, the method for 3D-DR image-guided moving tissue and organ positioning provided in this embodiment includes the following contents:

[0042] S1: a DR imaging device is provided.

[0043] Specifically, according to figure 2 As shown in the schematic diagram of the DR imaging device, the DR imaging device of this embodiment includes a set of X-ray sources and corresponding imaging flat panels for acquiring real-time DR images of patients. The system equipment can install the X-ray source 1 on the top of the treatment room, and the imaging panel is installed on the ground part of the treatment room, each of which uses a small-angle track to move, and the movement mode is controlled by the corresponding control system to ensure the consistency of the movement direction and the accuracy of the position. Of course, according to the needs, the X-ray source and the imaging panel can also be connected togeth...

Embodiment 2

[0067] Embodiment 1 above provides a three-dimensional image-guided moving organ positioning method, and correspondingly, this embodiment provides a three-dimensional image-guiding moving organ positioning system. The positioning system provided in this embodiment can implement the three-dimensional image-guided moving organ positioning method in Embodiment 1, and the positioning system can be realized by software, hardware, or a combination of software and hardware. For example, the positioning system may include integrated or separate functional modules or functional units to execute corresponding steps in the methods of Embodiment 1. Since the positioning system of this embodiment is basically similar to the method embodiment, the description process of this embodiment is relatively simple. For relevant parts, please refer to the part of the description of Embodiment 1. The embodiment of the positioning system of this embodiment is only schematic of.

[0068] A three-dimen...

Embodiment 3

[0074] This embodiment provides a processing device corresponding to the three-dimensional image-guided moving organ positioning method provided in Embodiment 1. The processing device may be an electronic device for a client, such as a mobile phone, a notebook computer, a tablet computer, a desktop computer, etc. , to execute the positioning method of Embodiment 1.

[0075] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. The bus may be an Industry Standard Architecture (ISA, Industry Standard Architecture) bus, a Peripheral Component Interconnect (PCI, Peripheral Component) bus, or an Extended Industry Standard Architecture (EISA, Extended Industry Standard Component) bus, and the like. A computer program that can run on the processor is stored in the memory, and the processor executes the three-dimensional ima...

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Abstract

The invention relates to a three-dimensional image guided moving organ positioning method and system and a storage medium. The method comprises the following steps: generating a virtual 3D-CT image set of a patient through an artificial intelligence network algorithm based on a real-time DR image of the patient; automatically segmenting tissue organs from the 3D-CT image set of the patient by adopting an automatic tissue and organ segmentation algorithm, and reconstructing a 3D model of the moving tissue organs of the patient through a 3D tissue and organ model reconstruction algorithm; automatically segmenting the virtual 3D-CT image set of the patient into virtual tissue organs by adopting an automatic tissue and organ segmentation algorithm, and reconstructing a 3D model of the virtual movement tissue organs of the patient through a 3D tissue organ model reconstruction algorithm; and performing registration calculation on the 3D model of the moving tissue organs of the patient and the 3D model of the virtual moving tissue organs, and outputting the 3D model shape and the moving offset of the specified moving tissue organs. 3D shape and position change information of in-vivo moving tissue organs can be obtained by using the three-dimensional image guided moving organ positioning method and system.

Description

technical field [0001] The invention relates to a three-dimensional (3D) image-guided moving organ positioning method, system and storage medium based on artificial intelligence technology and a digital X-ray imaging (DR) system used in radiotherapy, and relates to the technical field of radiotherapy. Background technique [0002] The purpose of radiation therapy is to use radiation to kill tumor cells while maximally protecting the patient's normal tissues and organs. However, in radiation therapy, some tissues, organs and tumor target areas in the patient's body will be displaced during treatment due to physiological movements such as breathing movement of the patient, resulting in poor treatment effect. Therefore, the protection and treatment of moving organs and target areas are the difficulties of radiation therapy. [0003] The current image-guided radiotherapy technology guides the movement organs and tumor target areas mainly include: the respiratory gating system, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10G06N3/04G06N3/08G06T7/11G06T7/246G06T7/33G06T17/00
CPCA61N5/1049G06T7/11G06T7/251G06T7/33G06N3/08G06T17/00A61N2005/1062G06T2207/10116G06T2207/10081G06T2207/20081G06T2207/20084G06T2207/30096G06T2210/41G06N3/045
Inventor 申国盛李强刘新国戴中颖金晓东贺鹏博
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI