A. Di Carlo, V. Sansalone, A. Tatone, and V. Varano
Modelling and Simulation Lab, Università Roma Tre, Roma, Italy
Laboratoire de Mécanique Physique, Université Paris Est, Paris, France
DISAT, Università degli Studi dell’Aquila, L'Aquila, Italy
We present a mechanical model a growing spherical shell suitable for predicting the evolution of a Saccular Cerebral Artery Aneurysms (SCAA). It relies basically on the Kröner-Lee decomposition, used to describe the interplay between the current and the relaxed configuration of body elements. Rupture or stabilization of a SCAA are the end effect of a number of biological mechanisms, still poorly ...
E. Khosrowshahli, and A. Jeremic
School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
McMaster University, Dept. of Electrical and Computer Engineering, McMaster University,
Hamilton, ON, Canada
Microwave imaging has been recently proposed as a potentially useful screening technique for breast cancer. This method detects abnormalities in the tissue based on permittivity difference between breast normal and malignant tissue. In this method breast is illuminated by high frequency electromagnetic wave, and received waves are then analyzed in order to construct a map of breast\'s ...
Study of how electromagnetic characteristics of human abdomen affects B1+ distribution on 3T MR Imaging
GE Healthcare Japan Corporation, Japan
It was studied how the permittivity and the conductivity of humans had influence on the transmit B1 magnetic field distribution in the abdominal region. It was also studied how these electromagnetic characteristics affected the static RF shimming which is defined as RF shimming by applying amplitude scaled and phase shifted version of essentially the same RF signal to multiple transmit elements.
M.H. Oztop, and K.L. McCarthy
University of California, Davis, CA, USA
In this study, Whey Protein Isolate (WPI) gels of different thickness were soaked in solutions of pH 7.0 and mass uptake was recorded. A finite element model based on diffusion and deformed mesh application modes in COMSOL Multiphysics was developed. Deformed mesh application mode provided the opportunity to incorporate the moving boundaries. The moving boundaries were solved by introducing ...
Modeling Antibiotic Diffusion in a Microfluidic Biofilm Array to Study Bacterial Responses to Antibiotic Concentrations and Combinations
J. Deng, L. Villegas, L. Shor, A. Vázquez, A. Dhummakupt, P. Samson, and J.P. Wikswo
University of Connecticut, Storrs, CT, USA
Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico
Vanderbilt University, Nashville, TN, USA
Bacteria within a biofilm typically exhibit higher resistance to antibiotic therapy due to mass transport resistance of the biofilm matrix and/or reduced metabolic activity of cells living within the biofilm interior. The objective of this research was to develop a high-throughput experimental and modeling approach to investigate the effects of colony spacing and concentration on the ...
T. Merrill, and A. La Barck
Rowan University, Glassboro, NJ, USA
Reperfusion injury is caused by the rapid restoration of blood flow to oxygen-starved tissue. The model will simulate pulsatile blood flow. A separate 2-dimensional axisymmetric straight tube model will be constructed to simulate the pulsating angioplasty balloon within the flow path. Outlet flow profiles from the straight tube model will then be used as the inlet condition for the ...
Multiphysics Modeling of Applied Stresses and Strains in an Isolated Biologic Cell During Microfluidic Manipulation
Y. Liang, A. Saha, Z. Shi, R. Marcus, and S.S. Kohles
Central State University, Wilberforce, OH, USA
Portland State University, Portland, OR, USA
In order to test the hypothesis that a controlled external mechanical stimulus may affect cellular regeneration or degeneration, we developed a three-dimensional computational model to explore the applications of a unique micromechanical environment in COMSOL. Recently, experimental stresses have been applied to living cells suspended by an optical trap within microchannel cross-junctional flows. ...
M.F.D. Moreno, L.P. Davila, and F. Viscarra
University of California at Merced, Merced, CA, USA
Our computational work has focused on calculating the mechanical properties of diatom silica structures using COMSOL Multiphysics. We have used selected diatom geometries based on their structure classification and different loading conditions. Various 3D structures were modeled on Pro/ENGINEER, and then exported to COMSOL for further analysis. The mechanical behavior of diatom structures was ...
K. Hegde, J. Clark, A.G. Akingba, and J.V. Clark
Purdue University, West Lafayette, IN, USA,
Indiana University, Indianapolis, IN, USA
In this paper we present a computational study of our novel arteriovenous (AV)-shunt interface device that is expected to reduce the mitigating factors that lead to clotting of the AV-shunts from prolonged hemodialysis. Kidney failure affects about 300,000 (about 0.1%) of the United States population. About 20% of the hemodialysis hospitalizations in the U.S. are due to clotting-related vascular ...
D. Zajarias-Fainsod, M.J. Chappell, J.F. Collingwood, A. Rennie, S. Nagaraja, and A. Wilson
University of Warwick, Coventry, UK,
University Hospital Coventry and Warwickshire NHS Trust, Coventry, UK
A first stage in this research was to determine the feasibility of patient-specific modelling and the use of in-silico techniques to study flow for the first time in the same vessels with and without an aneurysm. Three-dimensional renderings of the cerebral blood vessels were reconstructed from computed tomography angiograms of the head using MATLAB (The MathWorks) for image processing and ...