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Virtual endoscopy automatic and interactive path planning and navigation method suitable for complex cavity

A technology for virtual endoscope and path planning, which is applied in the directions of instruments, applications, and image data processing for radiological diagnosis. Simple, Lesion-Informative Results

Inactive Publication Date: 2017-10-13
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing virtual endoscope cannot be applied to complex cavities and it takes a lot of time to smooth the path, etc., and to provide a virtual endoscope that is suitable for automatic and interactive path planning and navigation method

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  • Virtual endoscopy automatic and interactive path planning and navigation method suitable for complex cavity
  • Virtual endoscopy automatic and interactive path planning and navigation method suitable for complex cavity

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Embodiment 1

[0021] The process flow of the virtual endoscope automatic and interactive path planning and navigation method proposed by the present invention is as follows: figure 1 shown. The concrete steps of described method are as follows:

[0022] (1) Obtain a group of continuous two-dimensional slices of the human body through imaging equipment;

[0023] (2) Extract the target area by image segmentation method;

[0024] (3) Utilize the segmented image to establish a three-dimensional model of the target area;

[0025] (4) Plan and guide the center path of roaming within the model by picking up coordinate points;

[0026] (5) Control the virtual camera to perform automatic navigation and interactive navigation virtual endoscopy along the planned center path.

[0027] For example, the renal pelvis and calices of the kidney in the human urinary system are complex and have many branches. Using the method of the present invention, it is easy to plan the central path to guide the movem...

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Abstract

The invention provides a virtual endoscopy automatic and interactive path planning and navigation method suitable for a complex cavity, belonging to the technical field of the combination of medical image processing and scientific computing visualization. The method comprises the steps of (1) obtaining a group of continuous human body two-dimensional slices through imaging equipment, (2) extracting a target area through an image cutting method, (3) using a cut image to establish a target area two-dimensional model, (4) planning and guiding a center path of roaming in the model through picking coordinates, and (5) controlling a virtual camera to carry out automatic navigation and interactive navigation virtual endoscope along the planned center path. The efficiency of the method of planning the path by picking the coordinates is high, the obtained path is smooth enough, a problem of 'going out of a wall' in an interactive navigation process can be solved well, and a complex collision detection operation is not needed. The method is non-invasive and safe and is simple to operate, and the information of lesions is rich.

Description

technical field [0001] The invention belongs to the technical field of combining medical image processing and scientific computing visualization, in particular to an automatic and interactive path planning and navigation method for a virtual endoscope suitable for complex cavities. Background technique [0002] Before performing endoscopic surgery, doctors generally judge lesion information through two-dimensional CT / MRI images, but two-dimensional images are very unintuitive and rely heavily on the experience of doctors. Therefore, using the virtual endoscope to observe the lesion before the operation and assisting the doctor's diagnosis process will greatly facilitate the doctor's operation. [0003] Virtual endoscopy makes full use of CT / MRI image data to establish a three-dimensional model of the lesion area, and then performs endoscopic operations by setting the central path and controlling the virtual camera. This is a completely non-contact inspection method, which c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T7/11A61B6/03A61B6/00
CPCG06T17/00A61B6/032A61B6/5211G06T7/11
Inventor 代煜李泓良张建勋
Owner NANKAI UNIV
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