CN104166762A - Construction method of finite element model of atlanto-axial joint, ligaments and vertebral artery - Google Patents
Construction method of finite element model of atlanto-axial joint, ligaments and vertebral artery Download PDFInfo
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- CN104166762A CN104166762A CN201410400634.6A CN201410400634A CN104166762A CN 104166762 A CN104166762 A CN 104166762A CN 201410400634 A CN201410400634 A CN 201410400634A CN 104166762 A CN104166762 A CN 104166762A
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Abstract
The invention discloses a construction method of a finite element model of the atlanto-axial joint, ligaments and the vertebral artery. The construction method of the finite element model of the atlanto-axial joint, the ligaments and the vertebral artery includes the steps that mimics or image J software is used for processing a CTA cross-sectional image at an existing resolution, and a high-resolution image is obtained; on the basis of the high-resolution image, a space geometric model of the atlanto-axial joint, the vertebral artery and the surrounding fixing ligaments is reconstructed; the space geometric model is led into 3-matic software to be optimized, and a volume mesh is assembled and defined. According to the construction method, a more accurate numerical solution can be provided for diseases related to the atlanto-axial joint, influence on the vertebral artery of lesions of the atlanto-axial joint can be analyzed, and during calculation, abaqus or adina software high in nonlinear capacity is used for conducing analysis and calculation.
Description
Technical field
The invention belongs to the vertebrarterial finite element model technical field of articulatio atlantoepistrophica band, relate in particular to the construction method of the vertebrarterial finite element model of a kind of articulatio atlantoepistrophica band.
Background technology
Finite element method is applied to existing more than the 40 years history in biomechanics field, from simple simulation normal physiological, simulate till now pathologic condition and develop, it has become very important analysis tool, and due to the inadequate problem of image resolution ratio, can not accurately rebuild geometric model in the finite element model having now, so that follow-up finite element model precision is influenced, trickle structure particularly, but play an important role
Summary of the invention
The object of the embodiment of the present invention is to provide the construction method of the vertebrarterial finite element model of a kind of articulatio atlantoepistrophica band, be intended to solve in existing finite element model because the inadequate problem of image resolution ratio can not accurately be rebuild geometric model, so that the follow-up affected problem of finite element model precision.
The embodiment of the present invention is achieved in that a kind of based on CTA thin layer scanning data, repartitions after the higher matrix resolution of acquisition, at mimics software, set up articulatio atlantoepistrophica, vertebral artery, and the model space geometric that adheres to ligament, then, in the assembling of 3matic software, finally generate finite element model.
Another object of the embodiment of the present invention is to provide a kind of finite element model of setting up articulatio atlantoepistrophica and surrounding structure, as the prerequisite basis of the mechanical analysis of articulatio atlantoepistrophica.
Articulatio atlantoepistrophica, the vertebral artery providing and the model space geometric that adheres to ligament are provided another object of the embodiment of the present invention, the formation that adopts 3D to print, prints complete solid model, for clinician observes articulatio atlantoepistrophica more intuitively, guiding clinical treatment, and can be used as teaching purposes.
The construction method of the vertebrarterial finite element model of articulatio atlantoepistrophica band provided by the invention, rebuild meticulousr articulatio atlantoepistrophica band vertebral artery finite element model, the effect of mechanics factor while analyzing the generation of articulatio atlantoepistrophica disease, particularly to analyzing the damage of tiny ligament, cause model stability and vertebrarterial impact has important effect.The present invention rebuilds based on the enterprising row interpolation in its original faultage image basis, then according to our distinctive anatomy professional knowledge, carries out Exact Reconstruction, and can carry out individuation reconstruction to different human body.
Accompanying drawing explanation
Fig. 1 is the vertebrarterial finite element model structural representation of articulatio atlantoepistrophica band that the embodiment of the present invention provides;
Fig. 2 is the rear view of the vertebrarterial finite element model of articulatio atlantoepistrophica band that provides of the embodiment of the present invention;
Fig. 3 is the vertebrarterial finite element model modeling method of the articulatio atlantoepistrophica band process flow diagram that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
As depicted in figs. 1 and 2, the vertebrarterial finite element model of articulatio atlantoepistrophica band of the embodiment of the present invention is mainly by occipital bone bottom, atlas, dentata, vertebral artery, anterior longitudinal ligament, posterior longitudinal ligament, ligamentaum nuchae, suspensorium, alar ligament, ligamentum cruciatum, ligamentaum nuchae;
As shown in Figure 3, the vertebrarterial finite element model modeling method of the articulatio atlantoepistrophica band of the embodiment of the present invention comprises the following steps:
S101: the softwares such as application mimics or image J are processed the faultage image of existing resolution, obtain more high-resolution image;
S102: then based on this high-resolution image reconstruction articulatio atlantoepistrophica, vertebral artery and the fixing model space geometric of ligament around;
S103: import in 3-matic software and be optimized, assemble and divide volume mesh.
Principle of work of the present invention:
The present invention includes occipital bone bottom, atlas, dentata, vertebral artery, anterior longitudinal ligament, posterior longitudinal ligament, ligamentaum nuchae, suspensorium, alar ligament, ligamentum cruciatum and ligamentaum nuchae, main application mimics or image J carry out rebuilding the more high-resolution faultage image of acquisition after software interpolation to CTA image, more accurately model space geometric based on having rebuild above-mentioned tissue after more high-resolution faultage image again, in 3-matric software, assemble and divide finite element volume mesh, based on this model, can bring for the relevant disease of articulatio atlantoepistrophica more accurately numerical solution, and the pathology of analyzing articulatio atlantoepistrophica is on vertebrarterial impact, during calculating, adopt abaqus or the adina software that non-linear ability is strong to carry out analytical calculation, obtain high-precision numerical solution.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a construction method for the vertebrarterial finite element model of articulatio atlantoepistrophica band, is characterized in that, the construction method of the vertebrarterial finite element model of this articulatio atlantoepistrophica band comprises:
Step 1, application mimics or image J software are processed the faultage image of existing resolution, obtain more high-resolution image; In mimics, reslice project function redefines resolution and the bed thickness of faultage image, obtains more high-resolution image;
Step 2, then based on this high-resolution image reconstruction articulatio atlantoepistrophica, vertebral artery and the fixing model space geometric of ligament around;
Step 3, import in 3-matic software and be optimized, assemble and divide volume mesh, the geometric model that smooth in process mimics and wrap function were repaired, import in 3matic software more further optimizing surface grid, the assembling that 3-matic software carries out articulatio atlantoepistrophica, vertebral artery and adheres to ligament, generates volume mesh finite element model after repeatedly optimizing.
2. the construction method of the vertebrarterial finite element model of articulatio atlantoepistrophica band as claimed in claim 1, it is characterized in that, based on this high-resolution image reconstruction articulatio atlantoepistrophica, vertebral artery and around fixedly the step of the model space geometric of ligament be: threshold application cutting techniques in mimics, generate respectively articulatio atlantoepistrophica, vertebral artery, and the mask that adheres to the ligament above joint; Then calculate articulatio atlantoepistrophica, vertebral artery, adhere to the solid geometry model of the ligament above joint.
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| CN201410400634.6A CN104166762A (en) | 2014-08-15 | 2014-08-15 | Construction method of finite element model of atlanto-axial joint, ligaments and vertebral artery |
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Cited By (3)
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| CN104392051A (en) * | 2014-11-28 | 2015-03-04 | 段少银 | Solid wall and fluid finite element model of arterial aneurysm of internal carotid |
| CN108762209A (en) * | 2018-05-25 | 2018-11-06 | 西安电子科技大学 | Production Line Configured's analogue system based on mixed reality and method |
| CN113223724A (en) * | 2021-05-17 | 2021-08-06 | 河北省中医院(河北中医学院第一附属医院) | Modeling method of hexahedral finite element model of lumbar posterior longitudinal ligament |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392051A (en) * | 2014-11-28 | 2015-03-04 | 段少银 | Solid wall and fluid finite element model of arterial aneurysm of internal carotid |
| CN108762209A (en) * | 2018-05-25 | 2018-11-06 | 西安电子科技大学 | Production Line Configured's analogue system based on mixed reality and method |
| CN113223724A (en) * | 2021-05-17 | 2021-08-06 | 河北省中医院(河北中医学院第一附属医院) | Modeling method of hexahedral finite element model of lumbar posterior longitudinal ligament |
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