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Image space and actual space registration method and system

A real space and image technology, applied in the medical field, can solve the problems of low registration accuracy between image space and real space

Inactive Publication Date: 2020-04-03
WUHAN ZHONGKE IND RES INST OF MEDICAL SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a registration method and system for image space and real space in view of the problem of low registration accuracy between image space and real space in the prior art

Method used

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  • Image space and actual space registration method and system
  • Image space and actual space registration method and system
  • Image space and actual space registration method and system

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Embodiment Construction

[0036] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0037] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" an...

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Abstract

The invention relates to an image space and actual space registration method and a system. According to the invention, registration reference points are obtained through positioning probes, an actualcoordinate point set and an image coordinate point set are obtained according to coordinates of the registration reference points in a world coordinate system and the coordinates of the registration reference points in an image coordinate system, and then an initial transformation matrix is constructed; actual point cloud data of a to-be-anatomical structure of the to-be-scanned object can be obtained through the positioning probe, the image point cloud data of the to-be-anatomical structure is obtained according to a medical image of the to-be-scanned object, and an initial transformation matrix is optimized according to the actual point cloud data and the image point cloud data to obtain a final transformation matrix. According to the registration method, the reference point and the actual point cloud data required by registration are respectively acquired through the positioning probe, the accuracy of the data can be improved, and pay-off scanning is avoided. In addition, through combination of reference point registration and point cloud registration, high-precision registration of an image space and an actual space can be realized.

Description

technical field [0001] The present application relates to the field of medical technology, in particular to a method and system for registering an image space and an actual space. Background technique [0002] In the prior art, the registration of the image space and the actual space can be realized by intraoperative medical image scanning, but this method increases the radiation exposure risk of patients and medical staff. The registration of image space and real space by implanting features will increase patient trauma. [0003] To solve the above problems, image registration technology can be combined to register the medical image coordinate system obtained by preoperative CT scan with the patient's actual coordinate system. Currently image registration includes fiducial point registration, plane registration and point cloud registration. Point registration is simple and fast, but it has the disadvantages of manual point selection is difficult, takes a long time, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/00A61B90/11A61B34/10
CPCA61B34/10A61B90/11A61B90/39A61B2034/101A61B2090/101A61B2090/3983
Inventor 张哲思王佳
Owner WUHAN ZHONGKE IND RES INST OF MEDICAL SCI CO LTD
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