A virtual eversion type 3-D external viewing method for internal walls of cavity organs

An organ and cavity technology, which is applied in the field of virtual eversion-type three-dimensional external visualization of the inner wall of hollow organs, can solve the problems of deformation of the inner wall of the organ, damage to the geometric structure of the organ, and influence on the reliability of diagnosis, etc. Intuitive and accurate positioning, wide viewing angle and flexible effects

Inactive Publication Date: 2009-03-04
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

Its shortcoming is that in the process of flattening and reconstructing the inner wall of the organ using their method, the inner wall of the organ will be deformed, especially in some areas where the geometry of the organ is irregular or curved, the deformation is more serious, thus Affects the reliability of diagnosis, and the result of flattening and reconstruction destroys the original geometric structure of the organ, making the diagnosis not intuitive enough

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Embodiment Construction

[0013] The specific steps of the method of the present invention are as follows: (1) Acquire medical original images. (2) The image is preprocessed and segmented. (3) Extract the surface of the inner wall of the organ. (4) Extract the valgus reference plane. (5) Perform valgus processing on the surface data of the inner wall of the organ. (6) Interactive display. The technical solution of the present invention will be further described in detail below in conjunction with a specific embodiment.

[0014] This embodiment uses the human colon as a sample for visualization reconstruction. The realization process of whole invention is as follows:

[0015] 1. Perform CT imaging on the lower abdomen of the human body to obtain CT tomographic image data.

[0016] 2. Perform necessary filtering processing on the tomographic image, including Gaussian filtering and median filtering, to remove noise. Using the region growing algorithm, the cavity inside the colon is segmented from t...

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Abstract

The present invention relates to a hollow organ inner wall virtual everted three-dimensional external viewing method, belonging to the field of image processing technology. Said method includes the following steps: firstly, obtaining medical original image, pretreating and dividing said image, respectively extracting inner wall surface of required hollow organ and reference face for making eversion treatment, then everting the data of inner wall surface to the outer side of reference face by adopting mirror-image mode, finally three-dimensionally-displaying organ inner wall surface undergone the process of eversion treatment by utilizing interactive mode, so that the user can make observation from external visual angle.

Description

technical field [0001] The present invention relates to a method in the technical field of image processing, in particular to a virtual eversion type three-dimensional external visualization method for the inner wall of a hollow organ. technical background [0002] At present, using medical imaging data such as CT and MRI, virtual endoscopy technology is mainly used for three-dimensional visualization reconstruction of the inner wall of hollow ductal organs. This technology simulates the movement of the traditional optical endoscope body in the cavity, and observes the inner wall of the organ from the perspective of the optical endoscope. The advantage of this technology is that it overcomes the shortcomings of traditional optical endoscopes that need to insert the endoscope body into the human body, and it is a completely non-contact inspection method. The disadvantage of the existing virtual endoscopy technology is that the observation angle is still limited to the endosc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00A61B5/055G06T7/00G06T7/10G06T17/00
Inventor 赵俊曹立基庄天戈
Owner SHANGHAI JIAOTONG UNIV
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