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Finite element stress analysis of the human left ventricle whose irregular shape is developed from single plane cineangiocardiogramThe three-dimensional left ventricular chamber geometrical model is developed from single plane cineangiocardiogram. This left ventricular model is loaded by an internal pressure monitored by cardiac catheterization. The resulting stresses in the left ventricular model chamber's wall are determined by computerized finite element procedure. For the discretization of this left ventricular model structure, a 20-node, isoparametric finite element is employed. The analysis and formulation of the computerised procedure is presented in the paper, along with the detailed algorithms and computer programs. The procedure is applied to determine the stresses in a left ventricle at an instant, during systole. Next, a portion (represented by a finite element) of this left ventricular chamber is simulated as being infarcted by making its active-state modulus value equal to its passive-state value; the neighbouring elements are shown to relieve the 'infarcted' element of stress by themselves taking on more stress.
Document ID
19770068408
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ghista, D. N.
(NASA Ames Research Center Biomedical Research Div., Moffett Field, Calif., United States)
Hamid, M. S.
(Indian Institute of Technology New Delhi, India)
Date Acquired
August 9, 2013
Publication Date
September 1, 1977
Publication Information
Publication: Computer Programs in Biomedicine
Volume: 7
Subject Category
Man/System Technology And Life Support
Accession Number
77A51260
Distribution Limits
Public
Copyright
Other

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