Watertight modeling and segmentation of bifurcated Coronary arteries for blood flow simulation using CT imaging

2016 ◽  
Vol 53 ◽  
pp. 43-53 ◽  
Author(s):  
Haoyin Zhou ◽  
Peng Sun ◽  
Seongmin Ha ◽  
Devon Lundine ◽  
Guanglei Xiong
Keyword(s):  
Blood Flow ◽  
Coronary Arteries ◽  
Flow Simulation ◽  
Ct Imaging ◽  
Blood Flow Simulation

Virtual Training System with Physical Viscoelastic Model and Blood Flow Simulation Based on a Range-Based SPH Method

2015 ◽  
Vol 25 ◽  
pp. 41-53 ◽  
Author(s):  
Yi Dong Bao ◽  
Dong Mei Wu
Keyword(s):  
Blood Flow ◽  
Soft Tissue ◽  
Flow Simulation ◽  
Training System ◽  
Sph Method ◽  
Viscoelastic Creep ◽  
Blood Flow Simulation ◽  
Tissue Cutting ◽  
Creep Characteristics ◽  
Cutting Model

A physical mesh-less soft tissue cutting model with the viscoelastic creep characteristics has been proposed in this paper. The model is composed of filled spheres which are connected by Kelvin structure, so as to realize the cutting with viscoelastic creep characteristics. Then, it is further compared with the mass spring model in order to verify the effectiveness of the model. Secondly, a range-based Smoothed Particle Hydrodynamics (SPH) method with variable smoothing length is proposed, in order to simulate the blood flow simulation effect in the virtual surgery training system. Finally, the two are combined to be applied to the kidney soft tissue cutting experiment in surgery trainings. Experiments show there is a significant improvement on the cutting and simulation effect in terms of the viscoelasticity of the soft tissue cutting and the pressure and viscous force of blood flow.

scholarly journals COMPUTER MODELING OF STENT DEPLOYMENT AND PLAQUE PROGRESSION IN THE CORONARY ARTERIES

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Nenad Filipović ◽  
Velibor Isailović ◽  
Žarko Milosević ◽  
Dalibor Nikolić ◽  
Igor Saveljić ◽  
...  
Keyword(s):  
Blood Flow ◽  
Coronary Arteries ◽  
Mixed Finite Element ◽  
Flow Simulation ◽  
Reaction Diffusion ◽  
Navier Stokes ◽  
Stent Deployment ◽  
Specific Patient ◽  
Nonlinear Viscoelastic ◽  
Solute Dynamics

In this study stent deployment modeling with plaque formation and pro- gression for specific patient in the coronary arteries are described. State of the art method for the reported investigations of blood flow in the stented arteries is described. In the met- hod section, image segmentation method for arteries with stent is shortly described. Blood flow simulation is described with Navier-Stokes and continuity equation. Blood vessel tis- sue is modeled with nonlinear viscoelastic material properties. The coupling of fluid dynamics and solute dynamics at the endothelium was achieved by the Kedem-Katchalsky equations. The inflammatory process is modeled using three additional reaction-diffusion partial differential equations. Coupled method with mixed finite element and DPD (Dissi- pative Particle Dynamics) method is presented. In the results section, the examples with rigid and deformable arterial wall with stented and unstented arteries are presented. Effecti- ve stress analysis results for stent deployment have been shown. It can be seen that stent reduces wall shear stress significantly after deployment which is caused by opening the artery and reducing the narrowing. Some results for stent deployment model obtained with solver developed under PAK software package. These computer models can make better understanding and preparation of the surgeons for stent deployment in everyday clinical practice.

Blood Flow Simulation and Applications

2012 ◽  
pp. 67-86 ◽  
Author(s):  
Luisa Costa Sousa ◽  
Catarina F. Castro ◽  
Carlos Conceição António
Keyword(s):  
Blood Flow ◽  
Flow Simulation ◽  
Blood Flow Simulation

Influence on Measurement Signal by Pressure and Viscosity Changes of Fluid and Installation Condition of FBG Sensor Using Blood Flow Simulation Model

2019 ◽  
Vol 19 (24) ◽  
pp. 11946-11954
Author(s):  
Shouhei Koyama ◽  
Toshiyuki Hayase ◽  
Suguru Miyauchi ◽  
Atsushi Shirai ◽  
Shun Chino ◽  
...  
Keyword(s):  
Blood Flow ◽  
Simulation Model ◽  
Flow Simulation ◽  
Blood Flow Simulation ◽  
Fbg Sensor ◽  
Measurement Signal ◽  
Viscosity Changes
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