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Aortic valve fluid-solid coupling numerical simulation method based on CT medical image data

A medical image and aortic valve technology, applied in medical images, image data processing, medical simulation, etc., can solve problems such as single structure analysis, difficulties in aortic valve experimental research, etc., and achieve a wide range of applications

Active Publication Date: 2020-04-10
BEIJING UNIV OF TECH
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Problems solved by technology

[0006] The present invention mainly aims at the difficulty of experimental research in current aortic valve and the problem of single structure analysis in numerical simulation, and proposes a numerical simulation method of fluid-solid coupling of aortic valve based on CT medical image data

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  • Aortic valve fluid-solid coupling numerical simulation method based on CT medical image data
  • Aortic valve fluid-solid coupling numerical simulation method based on CT medical image data
  • Aortic valve fluid-solid coupling numerical simulation method based on CT medical image data

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Embodiment

[0030] A method for numerical simulation of aortic valve fluid-solid coupling based on CT medical image data, the method comprising: S1, acquiring heart CT medical image data; S2, reconstructing a valved aortic root model based on CT medical image data; S3, flow Solid coupling numerical simulation; S4, aortic valve model verification.

[0031] In the meshing module, adding a boundary layer mesh at the model boundary can ensure that the calculation accuracy is more realistic and reflect the hemodynamics of the aortic root, and add automatic re-mesh and full-coupling commands in the solver configuration to solve the mesh in the calculation grid deformation problem.

[0032] In the material attribute module, the valve leaflet is defined as a solid domain, and the blood flow area is defined as a fluid domain and a deformation domain, and the corresponding material properties of the valve leaflet and blood are given to truly reflect the physiological state of the aortic root.

[0...

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Abstract

The invention discloses an aortic valve fluid-solid coupling numerical simulation method based on CT medical image data, and belongs to the field of aortic valve and fluid-solid coupling numerical simulation. The method comprises the following steps: acquiring heart CT medical image data; reconstructing a valved aorta root model based on the CT medical image data; carrying out fluid-solid couplingnumerical simulation; and verifying the aortic valve model. According to the invention, the aortic valve model is reconstructed through CT medical image data, aortic root fluid-solid coupling numerical simulation is carried out based on Comsol software, and the complex deformation problem of the aortic valve in the complete cardiac cycle is solved. The method truly reflects the hemodynamics of the root of the aorta, and the result has more guiding significance for reality. The aortic valve fluid-solid coupling numerical simulation developed by the invention can provide reference for artificial valve design and aortic valve replacement.

Description

technical field [0001] The invention relates to an aortic valve fluid-solid coupling numerical simulation method based on CT medical image data, belonging to the field of aortic valve and fluid-solid coupling numerical simulation. Background technique [0002] Cardiovascular disease is the disease with the highest morbidity and mortality rate in my country. Among them, heart valve disease is a serious threat to life and health in my country. More than 200,000 patients need valve surgery every year, accounting for the first place in adult heart surgery. one. [0003] Heart valve refers to the valve located between the atrium and ventricle or between the ventricle and the artery, including mitral valve, tricuspid valve, pulmonary valve and aortic valve. The opening and closing of the valve is achieved by the transvalvular pressure difference on both sides of the valve leaflet, ensuring One-way flow of blood and minimal backflow. Among them, the aortic valve is located between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H50/50G16H30/20G06T7/00G06T7/10
CPCG16H50/50G16H30/20G06T7/0012G06T7/10G06T2207/10081G06T2207/30048G06T2207/30104
Inventor 刘赵淼薛贺波杨刚逄燕
Owner BEIJING UNIV OF TECH
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