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Computer simulation of ventricular wall motion using the finite element method.

T Watanabe1, T Ohtake, N Kosaka

  • 1Department of Radiology, University of Tokyo, Japan.

Radiation Medicine
|July 1, 1988
PubMed
Summary
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A new computer program simulates cardiac wall motion changes due to heart disease, helping understand abnormal ventricular wall motion like hypokinesis and akinesis.

Area of Science:

  • Computational Biology
  • Cardiovascular Mechanics
  • Medical Simulation

Background:

  • Cardiac diseases alter myocardial mechanical properties, impacting ventricular wall motion.
  • Understanding these changes is crucial for diagnosing and managing heart conditions.
  • Existing methods often require complex physiological experiments.

Purpose of the Study:

  • To develop a computational tool for simulating ventricular wall motion.
  • To investigate the relationship between myocardial mechanical changes and abnormal wall motion.
  • To model pathological conditions like ischemia and aneurysm formation.

Main Methods:

  • Developed a computer program utilizing the finite element method for wall motion simulation.
  • Created a 2D finite element model of the left ventricle with idealized tension-length properties.

Related Experiment Videos

  • Induced pathological changes (ischemia) in the model to simulate hypokinesis, akinesis, and dyskinesis; modeled aneurysm formation via plastic deformation.

    • Main Results:

    • The simulation successfully reproduced abnormal ventricular wall motion patterns.
    • Plastic deformation at the affected site accurately modeled ventricular aneurysm development.
    • The model can be transformed into a 3D structure for multi-perspective analysis.

    Conclusions:

    • The developed finite element model provides a semiquantitative understanding of cardiac wall motion.
    • This simulation approach reduces the need for extensive physiological experiments.
    • Potential application in analyzing human cardiac motion when combined with clinical imaging data.