Human bone model establishing method based on bone imaging

A technology of model building and human bone, which is applied in the field of medical image processing, can solve the problems of randomness of human bone material properties, intricate mesoscopic structure, and high cost of mesh division, so as to achieve appropriate model capacity, ensure effective establishment, and solve high cost Effect

Pending Publication Date: 2020-12-29
TONGJI UNIV
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Problems solved by technology

[0003] In the field of medical science, the establishment of a fine human bone model is an important prerequisite for the repair of osteoporosis with internal fixation implants. However, due to the intricate microstructure of the cancellous bone in the human bone structure, the material properties of human bone have unique characteristics at the macro level. Strong randomness, for cancellous bone, it is more difficult to establish its human bone model
[0004] The finite element method in the computational mechanics method is widely used in the analysis of biological systems, and solves a large number of theoretical and application problems of biological systems. The finite element method has also become a general tool for biomechanical research. In the case of osteoporotic bone and internal fixation, it will lead to many difficult problems such as high mesh division cost and mesh distortion. At the same time, the established finite element model is also different from the real bone tissue structure in terms of mesoscopic continuity. access, high cost and low precision

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  • Human bone model establishing method based on bone imaging
  • Human bone model establishing method based on bone imaging

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Embodiment 1

[0064] Such as figure 2 As shown, it is a specific flow diagram of this embodiment, including the following steps:

[0065] This embodiment adopts python language, based on micro-computed tomography (micro-CT) imaging of a cancellous bone tissue sample (the sample is derived from the human humerus of an 86-year-old female donor, the sample diameter is 8.35mm, and the length is 12mm). , directly program and output the point metadata set of the human bone model suitable for the particle-based meshless method, and finally use the particle-based meshless method to establish the human bone model, including the following steps:

[0066] Step 1: Read the micro-CT imaging source file of the bone tissue through the pydicom package, restore the read pixel matrix, convert the original pixel unit into a standard Hoinz unit, and then pass each slice The Hoinz unit matrix is ​​stacked into a three-dimensional matrix, and a three-dimensional human bone imaging data set is reconstructed;

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Abstract

The invention relates to a human bone model establishing method based on bone imaging. The method comprises the following steps: S1, acquiring bone imaging data, and reconstructing a bone imaging dataset; S2, adopting a human bone tissue recognition algorithm to recognize bone tissue in bone imaging in order to obtain a bone tissue data set; S3, performing down-sampling on the bone tissue data set by adopting a human bone tissue centralization algorithm to obtain a human bone model point metadata set; and S4, establishing a human bone model through a meshless method by utilizing the human bone model point metadata set. Compared with the prior art, the method has the advantages of low cost, high precision and the like.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to a method for establishing a human bone model based on bone imaging. Background technique [0002] Human skeleton extraction technology is an important technology in the field of human-computer interaction. It has a wide range of application prospects in 3D animation production, online games, medical science, gesture capture and natural human-computer interaction environments. Due to the complexity and irregular shape of the human body model, as well as the diversity of human body posture changes, the automatic extraction process of bones is difficult, so the research on bone extraction for analysis has also received extensive attention. [0003] In the field of medical science, the establishment of a fine human bone model is an important prerequisite for the repair of osteoporosis with internal fixation implants. However, due to the intricate microstructure of the cancello...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/40G06F30/28G06F30/25
CPCG06F30/28G06F30/25G06V20/647G06V40/10G06V10/30
Inventor 任晓丹杨禹森
Owner TONGJI UNIV
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