Numerical Simulations of the Hydrodynamics of the Abdominal Aorta Aneurysm (AAA) Using a Smoothed Particle Hydrodynamics Code with Deformable Wall Preliminary Results

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Abstract

We present some preliminary results of the numerical simulations of the hydrodynamic characteristics of an abdominal aorta aneurysm (AAA) patient specific test case. Images of the AAA lumen have been acquired in 10 discrete time-steps through a stabilized cardiac cycle by electrocardiogram-gated computer tomography angiography, and are used to approximate the in vivo, time dependent kinematic fields of the (internal) arterial wall. The flow field is simulated by a Smoothed Particle SPH numerical model, where the kinematics of the boundary of the computational domain (the internal aortic vessel) is the one computed by the above procedure. The outputs of the SPH model, i.e., pressure and flow field characteristics, are used to compute the stress strain tensor acting over the internal walls of the aorta. The two coupled approaches, i.e., 1) the procedure applied for the kinematics of the internal walls of the aorta and 2) the fluido-dynamic numerical model could constitute a new and fast tool to predict and prevent aneurysm rupture risk.
Original languageEnglish
Pages1-4
Number of pages4
Publication statusPublished - 2018

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Industrial and Manufacturing Engineering
  • Instrumentation

Cite this

@conference{8027dee9e72f4a0a8d701ccbe6593afb,
title = "Numerical Simulations of the Hydrodynamics of the Abdominal Aorta Aneurysm (AAA) Using a Smoothed Particle Hydrodynamics Code with Deformable Wall Preliminary Results",
abstract = "We present some preliminary results of the numerical simulations of the hydrodynamic characteristics of an abdominal aorta aneurysm (AAA) patient specific test case. Images of the AAA lumen have been acquired in 10 discrete time-steps through a stabilized cardiac cycle by electrocardiogram-gated computer tomography angiography, and are used to approximate the in vivo, time dependent kinematic fields of the (internal) arterial wall. The flow field is simulated by a Smoothed Particle SPH numerical model, where the kinematics of the boundary of the computational domain (the internal aortic vessel) is the one computed by the above procedure. The outputs of the SPH model, i.e., pressure and flow field characteristics, are used to compute the stress strain tensor acting over the internal walls of the aorta. The two coupled approaches, i.e., 1) the procedure applied for the kinematics of the internal walls of the aorta and 2) the fluido-dynamic numerical model could constitute a new and fast tool to predict and prevent aneurysm rupture risk.",
author = "Gioacchino Alotta and Enrico Napoli and Alessandra Monteleone and Costanza Arico' and Massimiliano Zingales and Robert Nagy",
year = "2018",
language = "English",
pages = "1--4",

}

TY - CONF

T1 - Numerical Simulations of the Hydrodynamics of the Abdominal Aorta Aneurysm (AAA) Using a Smoothed Particle Hydrodynamics Code with Deformable Wall Preliminary Results

AU - Alotta, Gioacchino

AU - Napoli, Enrico

AU - Monteleone, Alessandra

AU - Arico', Costanza

AU - Zingales, Massimiliano

AU - Nagy, Robert

PY - 2018

Y1 - 2018

N2 - We present some preliminary results of the numerical simulations of the hydrodynamic characteristics of an abdominal aorta aneurysm (AAA) patient specific test case. Images of the AAA lumen have been acquired in 10 discrete time-steps through a stabilized cardiac cycle by electrocardiogram-gated computer tomography angiography, and are used to approximate the in vivo, time dependent kinematic fields of the (internal) arterial wall. The flow field is simulated by a Smoothed Particle SPH numerical model, where the kinematics of the boundary of the computational domain (the internal aortic vessel) is the one computed by the above procedure. The outputs of the SPH model, i.e., pressure and flow field characteristics, are used to compute the stress strain tensor acting over the internal walls of the aorta. The two coupled approaches, i.e., 1) the procedure applied for the kinematics of the internal walls of the aorta and 2) the fluido-dynamic numerical model could constitute a new and fast tool to predict and prevent aneurysm rupture risk.

AB - We present some preliminary results of the numerical simulations of the hydrodynamic characteristics of an abdominal aorta aneurysm (AAA) patient specific test case. Images of the AAA lumen have been acquired in 10 discrete time-steps through a stabilized cardiac cycle by electrocardiogram-gated computer tomography angiography, and are used to approximate the in vivo, time dependent kinematic fields of the (internal) arterial wall. The flow field is simulated by a Smoothed Particle SPH numerical model, where the kinematics of the boundary of the computational domain (the internal aortic vessel) is the one computed by the above procedure. The outputs of the SPH model, i.e., pressure and flow field characteristics, are used to compute the stress strain tensor acting over the internal walls of the aorta. The two coupled approaches, i.e., 1) the procedure applied for the kinematics of the internal walls of the aorta and 2) the fluido-dynamic numerical model could constitute a new and fast tool to predict and prevent aneurysm rupture risk.

UR - http://hdl.handle.net/10447/338404

M3 - Other

SP - 1

EP - 4

ER -