U. Topaloglu, Y. Yan, P. Novak, P. Spring, J. Suen, and G. Shafirstein
 Department of Information Technology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
Department of Otolaryngology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
Thermal ablation in the head and neck requires accurate thermal dose delivery to target tissue while protecting the structure and function of nearby tissue and organs. In this study, we present a method that allows importing Computed Tomography (CT) scans to COMSOL, in order to model accurately the expected pathological outcomes prior to thermal ablation treatment. Thermal ablation of a virtual ...
G. Megali, D. Pellicanò, M. Cacciola, F. Calarco, D. De Carlo, F. Laganà, and F.C. Morabito
DIMET Department, Faculty of Engineering, University “Mediterranea” of Reggio Calabria, Reggio Calabria, Italy
Constitutive properties of living cells are able to withstand physiological environment as well as mechanical stimuli occurring within and outside the body. We examined fluid flow and Neo-Hookean deformation related to the rolling effect. A mechanical model to describe the cellular adhesion with detachment is here proposed. We developed a finite element analysis, simulating blood cells attached ...
Non-Newtonian Hemodynamics and Shear Stress Distribution in Three Dimensional Model of Healthy and Stented Coronary Artery Bifurcation
M.M. Zarandi, R. Mongrain, and O.F. Bertrand
McGill University, Montreal, QC, Canada
Laval University Quebec City, QC, Canada
In this paper, a three-dimensional model of the coronary artery bifurcation is developed and physiological flow in the both healthy and stented coronary artery bifurcation is modeled using COMSOL Multiphysics. Wall shear stress induced by endovascular stents in the coronary artery bifurcation is analyzed considering both non- Newtonian and Newtonian flow models. Our simulations shows that the ...
J. Persad , S. Rocke , D. Ringis , A. Abdool ,
 Department of Electrical and Computer Engineering, University of the West Indies, St. Augustine, Trinidad and Tobago
3D printing as applied to the area of electronics manufacture covers a broad range of traditional printing technologies . The attraction in 3D printing lies in its potential to disrupt the traditional photolithographic/subtractive manufacturing line with simpler additive processes. Additive electronics manufacturing which utilises 3D printing techniques allow for fewer production steps and ...
H.C. Wong, K.N. Cho, and W.C. Tang
Department of Biomedical Engineering, University of California, Irvine, California, USA
Atherosclerosis causes the deposition of plaque on the inner walls of arteries, which leads to restricted blood flow. Using the balloon angioplasty procedure, stents can be inserted and expanded in the atherosclerotic artery. We used COMSOL Multiphysics Structural Mechanics, Solid Stress-Strain module to perform static, large deformation analyses. Our results show that lower stent stresses were ...
A. Chanda, A.R. Choudhury, G. Ray, K. Dasgupta, and D. Nag
Jadavpur University, Kolkata, West Bengal, India
Atherosclerosis in arteries is caused by the formation of stenosis : fatty depositions, on the artery wall. In current medicine, the practice is to observe the maximum percentage occlusion at any arbitrary cross-section and diagnose the patient on that basis, which might not always present the real picture due to non-uniformity of the stenosis thickness. The present work attempts to simulate the ...
Priyadarshini Natarajan , Rajkumar ElagiriRamalingam
Division of Biomedical Engineering, School of Biosciences and Technology, VIT University, Tamil Nadu, India
Intracerebral hemorrhage is a condition where a blood vessel in the brain ruptures and causes internal bleeding leading to hemorrhagic stroke. 800 in every 100,000 people suffer from stroke each year and it's one of the major causes of mortality worldwide. Diagnosis involves Neurological examination with MRI/CT scans which is costly and time consuming. Microwave Tomography (MWT) is proposed as a ...
K. Shahim, J-M. Drezet, J-F. Molinari, S. Momjian, and R. Sinkus
LSMX, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
LSMS, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
University Hospitals of Geneva and University of Geneva, Switzerland
Waves and Acoustics Laboratory, ESPCI, Paris, France
A numerical finite element model of one human brain is built in COMSOL in order to study a particular form of hydrocephalus, the so called Normal Pressure Hydrocephalus (NPH). The geometry of the ventricles and the skull is obtained by Magnetic Resonance Imaging (MRI) and imported in COMSOL Multiphysics. Form the mechanical point of view, the brain parenchyma is modeled as a porous medium fully ...
Modeling of Retinal Electrical Stimulation Using a Micro Electrode Array Coupled with the Gouy-Chapman Electrical Double Layer Model to Investigate Stimulation Efficiency
F. Dupont, R. Scapolan, C. Condemine, J.F. Bêche, M. Belleville, and P. Pham
CEA, LETI, Minatec, Grenoble, France
The electrical stimulation for retinal implant has known significant improvements in the last decades with many implantations and experimentations. The ability to create better controlled and adapted signals to increase the efficiency in stimulation is a major objective. The aim of this study is to develop a numerical platform based on COMSOL Multiphysics to simulate different waveforms. The ...
Numerical Prediction of Particle Dynamics Within a Cytometer. Application to Counting and Sizing by Impendance Measurement
HORIBA Medical, Montpellier, France
This paper describes how to numerically tackle the problem of counting and sizing particles by impedance measurement in an orifice–electrode system. The model simulate the particle dynamics submitted to strong hydrodynamic stresses through a microorifice and compute the voltage pulses generated by the modification of the inner dielectric medium. This FSI problem is solved on a moving mesh by ...