Three-dimensional body surface contour monitoring system for radiotherapy positioning guidance and working method of three-dimensional body surface contour monitoring system

A monitoring system and three-dimensional contour technology, applied in the medical field, can solve problems such as limited access to three-dimensional body surface information, and achieve the effects of satisfying clinical placement accuracy, reducing placement errors, and improving placement accuracy.

CN113995968AInactive Publication Date: 2022-02-01AFFILIATED CANCER HOSPITAL OF SHANDONG FIRST MEDICAL UNIV SHANDONG CANCER INST (SHANDONG CANCER HOSPITAL)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-02-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a three-dimensional body surface contour monitoring system for radiotherapy positioning guidance and a method. The system comprises a lens calibration module which is configured to expose an initial geometric reference original point by using 0-degree and 360-degree light and calibrate geometric distortion of a lens, a first position information acquisition module configured to acquire first image position information of the initial three-color body surface three-dimensional contour of the patient, a second position information acquisition module configured to acquire second image position information of the three-color body surface three-dimensional contour after the patient moves, and a positioning guide module configured to calculate the overlap ratio of the second image position information and the first image position information. The three-dimensional equal-angle contour information of the body surface can be fully utilized and compared with the three-dimensional equal-angle contour information obtained during positioning, the three-dimensional equal-angle contour information is used for position registration of follow-up treatment positioning, the human body state during positioning is repeated to the maximum extent, the positioning error is reduced, and no harmful radiation exists.
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Description

technical field

[0001] The disclosure belongs to the field of medical technology, and in particular relates to a three-dimensional body surface contour monitoring system for radiotherapy positioning guidance and a working method thereof. Background technique

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the development of radiation therapy technology, advanced technologies such as IMRT and SBRT have gradually emerged. It is the ideal goal of radiation oncologists to give sufficient radiation dose to tumors and protect normal organs as much as possible. The human body is neither rigid nor static. Changes in the body such as heartbeat, breathing, and patient posture are unstoppable. Accurately recording and repeating the state of the patient's positioning has become a new technical challenge.

[0004] CBCT technology based on mV or kV level has been use...

Examples

Embodiment 1

[0035] Such as Figure 1-8 As shown, this embodiment provides a three-dimensional body surface contour monitoring system for radiotherapy positioning guidance, including:

[0036] The lens calibration module is configured to use 0° and 360° light exposure to the original geometric reference point to calibrate the geometric distortion of the lens;

[0037] The first position information acquisition module is configured to acquire the first image position information of the patient's initial trichromatic body surface three-dimensional contour;

[0038] The second position information acquisition module is configured to acquire the second image position information of the three-dimensional outline of the three-color body surface after the patient moves;

[0039] The positioning guidance module is configured to calculate the degree of coincidence between the second image position information and the first image position information, and guide and adjust the patient's position bas...

Embodiment 2

[0071] Such as Image 6 As shown, this embodiment provides a working method of a three-dimensional body surface contour monitoring system for radiotherapy positioning guidance. This embodiment uses this method as an example to illustrate the server. It can be understood that this method can also be applied For terminals, it can also be applied to terminals, servers and systems, and is realized through the interaction between terminals and servers. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or it can provide cloud services, cloud database, cloud computing, cloud function, cloud storage, network server, cloud communication, intermediate Cloud servers for basic cloud computing services such as software services, domain name services, security service CDN, and big data and artificial intelligence platforms. The terminal may be a smart phone, a tablet computer, a laptop computer, a desktop comp...