Reconstruction method of dynamic heart three-dimensional model

A technology of 3D model and heart, applied in dynamic reconstruction of 3D heart, 3D reconstruction field, can solve problems such as lack of modeling methods

Inactive Publication Date: 2019-07-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of easy-to-implement modeling methods in this field

Method used

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  • Reconstruction method of dynamic heart three-dimensional model
  • Reconstruction method of dynamic heart three-dimensional model
  • Reconstruction method of dynamic heart three-dimensional model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment directly performs model interpolation on the existing multi-temporal static heart model, completes the estimation of the motion trajectory of the whole heart and each chamber, and finally obtains a dynamic three-dimensional model of the heart. Specifically, the dynamic three-dimensional model of the heart provided in this example The reconstruction method flow is as follows figure 1 shown, including the following steps:

[0031] Step S110, select the static heart model of the important time phase in the cardiac cycle, the static heart model is as follows figure 2 As shown, including ventricular systole (0.05s isovolumic contraction, 0.09s rapid ejection period, 0.13s slowed ejection period) and ventricular diastole (0.04s prediastole, 0.08s isovolumic relaxation period, rapid filling period 0.11s, slow filling period 0.19s and atrial systole 0.1s), select important phases, such as end-diastole and end-systole, and other phases during the cardiac cycle....

Embodiment 2

[0050] As an improvement of the first embodiment, in this embodiment, the mathematical model of the heart formed by PCA is used to reproduce the motion trajectory, and interpolate the mathematical model, so as to realize the establishment of a four-dimensional heart model. Specifically, the flow of the reconstruction method for the dynamic 3D model of the heart provided in this example is as follows: image 3 shown, including the following steps:

[0051] Step S210, selecting the heart mathematical model of the important time phase in the cardiac cycle, such as Figure 4 As shown, including ventricular systole (0.05s isovolumic contraction, 0.09s rapid ejection period, 0.13s slowed ejection period) and ventricular diastole (0.04s prediastole, 0.08s isovolumic relaxation period, rapid filling period 0.11s, slow filling period 0.19s and atrial systole 0.1s). These mathematical models are generated by PCA (Principal Component Analysis) of the static three-dimensional model of t...

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Abstract

The invention provides a reconstruction method of a dynamic heart three-dimensional model. The method comprises the steps of selecting a heart model of an import time phase in a cardiac cycle; addinga time parameter in a mathematical model expression of the step 1, thereby representing a heart model in a four-dimensional space; performing interpolation for fitting the movement track of each pointon the heart model which is represented by the step 2; checking a model interpenetration part which does not accord with common sense in an interpolation process, and modifying unreasonable parts; dynamically displaying heart motion through using one cardiac cycle as a unit, thereby obtaining dynamic heart three-dimensional model. According to the reconstruction method, the dynamic three-dimensional heart model with medical value can be established for reproducing the physiological motion of the heart in the cardiac cycle. The heart model comprises a left atrium, a right atrium, a left ventricle, a right ventricle, a left ventricle outer wall and all heart parts of the whole heart chamber outer wall. Based on the reconstruction method, comprehensive analysis for the motion characteristicof the heart can be realized, and furthermore whether a heart physiological function abnormity exists is checked.

Description

technical field [0001] The invention belongs to the field of computer graphics and relates to a three-dimensional reconstruction technology, in particular to a dynamic reconstruction technology of a three-dimensional heart. Background technique [0002] The heart is one of the most important organs in the human body, and it is also an organ with very complex structure and movement. The relaxation and contraction of the atrium and ventricle are the power source of the circulatory system. Cardiovascular disease is one of the diseases with the highest morbidity and mortality in the world today, which can significantly affect the labor force and daily life of patients. However, the existing medical technology cannot dynamically and three-dimensionally display the movement state of the patient's heart, and it is difficult to describe it accurately. Dynamic 3D reconstruction uses image segmentation, image registration and information fusion, 3D visualization, motion analysis and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H50/00G06T17/00
CPCG16H50/00G06T17/00
Inventor 王雁刚朱婷
Owner SOUTHEAST UNIV
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