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A Method for Extracting Isosurface Mesh of Medical Image 3D Reconstruction

A 3D reconstruction and medical image technology, applied in the field of medical images, can solve problems such as redundant grids

Inactive Publication Date: 2020-11-20
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This program provides a grid generation scheme based on a 3D reconstruction of medical images to solve the problem of a large number of redundant grids generated by the extraction of iso-surfaces in existing methods, remove some unnecessary calculations, and eliminate some unnecessary small grids. grid

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  • A Method for Extracting Isosurface Mesh of Medical Image 3D Reconstruction
  • A Method for Extracting Isosurface Mesh of Medical Image 3D Reconstruction
  • A Method for Extracting Isosurface Mesh of Medical Image 3D Reconstruction

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Embodiment Construction

[0026] In order to make the features of the present invention clearer, a detailed description will be given with VTK as a platform in combination with specific examples.

[0027] After importing the medical tomography dicom format data into the program, first go through the image preprocessing process such as denoising, and then forward the image data into a data stream, which is convenient for building a cube according to the subscript, which is used by the algorithm of the present invention. In the VTK platform, imitating the implementation process of the MC algorithm, there are dims[3] in its RequsetData function (RequsetData is a function in the VTK pipeline) (indicating that the data is large in the three spatial scales of the image, corresponding to the number of pixels) , spacing[3] (represents the actual spatial size of the empty image in three spatial scales, corresponding to the actual size of the object between pixels), origin[3] and extent[6] (origin[3] and extent[6...

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Abstract

The invention belongs to the technical field of medical images, and provides a method for extracting isosurface mesh from three-dimensional reconstruction of medical images. The invention sequentiallysolves each intersection point of the isosurface and the cube in sequence, then composes the intersection points into a triangular mesh, determines whether the adjacent cube sharing the two points isto be processed by using a group of two adjacent intersection points, and records the information of the cube to be processed by using a queue. The cubes processed throughout the process come from two sources: one is all cubes in the middle layer, and the other is a cube constructed from data retrieved through a queue. an isosurface grid with a specified threshold is generated when the queue is empty.

Description

technical field [0001] The invention belongs to the field of medical images and provides a method for extracting isosurface grids of three-dimensional reconstruction of medical images. Background technique [0002] Through medical imaging technology, doctors can obtain many characteristics of the patient's body. However, in the traditional method, doctors directly use CT / MRI two-dimensional tomographic images to imagine three-dimensional to analyze and diagnose, which requires rich experience of doctors; at the same time, it is difficult to accurately grasp the physiological and pathological properties, spatial geometric characteristics and The spatial relationship between its surrounding tissues. With computer assistance, the isosurface grid is extracted from the volume data composed of many two-dimensional faults, and finally the isosurface grid is presented to the doctor in the form of a 3D model, which can greatly reduce the workload of the doctor and the accuracy of di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/20G16H30/20
CPCG06T17/20G16H30/20
Inventor 王沫楠段正华
Owner HARBIN UNIV OF SCI & TECH