Numerical model for the left ventricle pump: From the excitation of the fibers to the contraction of the whole heart

M. Boulos, C. Oddou, J. Ohayon, B. Crozatier

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A model for the left ventricle is formulated that takes into account the mechanics of the wall considered as a pressurized thick ellipsoidal shell made of a composite fibrous and active medium. The activation of the fibers is heuristically introduced through the rheological properties of the muscle cells. The biphasic medium is anisotropic and nonhomogeneous, and the pitch angle of the fibers embedded into the interstitial matrix varies with their localization within the wall. Drawing from canine experimental data the geometrical and rheological input parameters of the model, a finite difference analysis applied to the equilibrium of the structure permits the determination of local agreement with ultrasound measurements, and the model predicts the overall kinematics of the left ventricular structure as recorded for wall thickness, major and minor axis diameter and volume of the cavity.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2051-2053
Number of pages3
Editionpt 5
ISBN (Print)0780302168
StatePublished - 1991
EventProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Orlando, FL, USA
Duration: Oct 31 1991Nov 3 1991

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 5
Volume13
ISSN (Print)0589-1019

Other

OtherProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityOrlando, FL, USA
Period10/31/9111/3/91

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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