Method and system for obtaining four-dimensional blood vessel deformation behavior and in-vivo stress of blood vessel wall

Abstract

The invention provides a method and a system for obtaining a four-dimensional blood vessel deformation behavior and in-vivo stress of a blood vessel wall. The method combines a three-dimensional image reconstruction technology and a discrete approximation theory to realize the big deformation behavior and the in-vivo stress of the blood vessel wall. The innovations of the invention are that the change of an anatomic form of healthy or pathological vessels in a cardiac cycle along with the time can be intuitively researched for a stent to intervene pre-operation evaluation and selection of a treatment strategy; a change condition of the in-vivo stress distribution of the blood vessel wall can be also provided for plaque rupture prediction and diagnosis, so that a new method is provided for quantitative description of kinematics characteristics of the blood vessel wall and the in-vivo stress of the blood vessel wall.

Description

technical field [0001] The invention relates to the application in the medical field, in particular to the accurate, fast and non-invasive calculation of the four-dimensional blood vessel deformation behavior and the in-body stress of the vessel wall based on images. Background technique [0002] In-body stress is the stress state of living organisms in a specific mechanical environment. When the in-body stress exceeds the tolerance range of the normal living body, the normal living body changes the mechanical properties of its own tissues to adapt to the current stress state, thus compensatory tissue lesions occur. The heart contracts and relaxes continuously, resulting in periodic changes in the anatomical shape of the cardiovascular wall and the in-body stress of the wall. Quantitative description of the deformation behavior and in vivo stress of the cardiovascular wall will help to understand the kinematic characteristics and biomechanical properties of the cardiovascul...

AI Technical Summary

Problems solved by technology

However, the traditional in vitro stretching experiment has the following limitations: 1) There are certain differences between the in vitro experiment and the mechanical properties of human arterial walls in vivo; 2) Simple stretching experiments cannot obtain complex The mechanical properties of the arterial wall under the stress state and the real-time changes in the cardiac cycle; 3) The average processing under limited samples cannot accurately characterize the mechanical properties of the arterial wall of an individual patient, especially for patients at risk Assessment of Arterial Wall Mechanical Properties

In addition, there are currently no calculation methods for the deformation behavior of the vessel wall and the in vivo stress of the vessel wall as a function of time during the cardiac cycle

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