Tissue deformation method based on mass spring and hydromechanics

A technology of particle springs and fluid mechanics, applied in informatics, special data processing applications, instruments, etc., can solve problems that cannot take into account the authenticity and real-time performance of the simulator

Active Publication Date: 2016-08-31
YIWU SCI & TECH INST CO LTD OF ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0006] In order to overcome the deficiency that the behavior of soft tissue in the existing virtual surgery system cannot take into account the authenticity and real-time performance of th...

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  • Tissue deformation method based on mass spring and hydromechanics
  • Tissue deformation method based on mass spring and hydromechanics
  • Tissue deformation method based on mass spring and hydromechanics

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with the accompanying drawings.

[0056] refer to Figure 1 ~ Figure 3 , a tissue deformation method based on particle springs and hydrodynamics, the tissue deformation method comprising the steps of:

[0057] The first step is to establish a uniform triangular mesh for the tissue to be studied from the medical data;

[0058] The second step is to establish a physical model of a particle spring on the constructed tissue grid model;

[0059] The third step is to establish a fixed rigid body kernel and a generalized spring;

[0060] The fourth step is to fill the SPH model fluid in the constructed mass spring mesh model;

[0061] The fifth step is to set a rigid body occupying a certain space to transmit the load together with the fluid; the particle spring model simulates the skin deformation on the surface of the tissue, and the SPH model fluid and rigid body simulate the operating mechanism of the ...

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Abstract

A tissue deformation method based on a mass spring and hydromechanics comprises the steps that firstly, a uniform triangular patch grid is established for a to-be-researched tissue according to medical data; secondly, a mass spring physical model is established on the established tissue grid model; thirdly, a fixed rigid body core and a generalized spring are established; fourthly, the established mass spring grid model is filled with a SPH model fluid; and fifthly, a rigid body which occupies certain space is set and used to transmit loads together with the fluid. The mass spring model is used to simulate skin deformation on the tissue surface; and the SPH model fluid and the rigid body are used to simulate a running mechanism of body fluids in the tissue. The invention provides the tissue deformation method based on the mass spring and the hydromechanics, wherein the method has high timeliness and can increase authenticity of simulation.

Description

technical field [0001] The invention relates to the field of computer graphics biological tissue mechanics, in particular to a tissue deformation method based on mass point springs and fluid mechanics. Background technique [0002] The rapid development of computer graphics provides a solid foundation and guarantee for the development of virtual surgery training system. Surgeons can provide valuable experience before performing real surgery by simulating the process of surgery on the virtual surgery training system, making surgery safer, more reliable and more accurate. [0003] A complete virtual surgery system needs to span many technical fields and involve many disciplines, including medical data visualization, computer graphics, Newtonian dynamics, biomechanics, continuum mechanics, fluid mechanics, numerical computing, physical modeling and geometric algorithms It is a highly comprehensive research direction and generally has the following two characteristics: the scen...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 冯远静马诗畑张晓良邱怀宇曾庆润胡家庆
Owner YIWU SCI & TECH INST CO LTD OF ZHEJIANG UNIV OF TECH
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