Computational Analysis for Mechanical Functions of Left Ventricle
A numerical simulation system using the three-dimensional finite element method (3D-FEM) is established to reproduce the performance of the left ventricle during one cardiac cycle, which may ultimately provide useful information for medical diagnoses. The simulation system consists of a 3D-FEM mechanical model of the left ventricle based on four fundamental models, that is, (1) a mechanical model of myocardial muscle fiber which produces the active force, (2) a mechanical model of the left ventricle which is composed of the myocardial muscle fiber, (3) a transmission model of electric stimulus, and (4) a circulatory system model which gives the pre-and after-loads to the left ventricular model. In this chapter, the fundamental system of the simulator is explained, and some typical examples of computational results obtained by this system are shown and discussed. The reliability of the simulator is examined by comparing some numerical results with the corresponding results obtained by medical imaging technique.
KeywordsLeft Ventricle Electric Stimulus Sarcomere Length Fiber Angle Aortic Compliance
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- Huxley, A F (1971) The structural basis of muscular contraction. J. Physiol. 243: 131 - 149Google Scholar
- Sawaki Y, Fushitani Y, Tokuda M, Yagi K, Inaba T, Sekioka K, Nakano T (1997) Numerical simulator for estimation of mechanical functions of human left ventricle (3rd report, stress distribution in left ventricular wall) (in Japanese). Trans Jpn Soc Mech Eng Ser A 63: 1533 - 1538CrossRefGoogle Scholar
- Sekioka K (1988) A digital control system for ventricular loading. (in Japanese) Japanese J. Medical Electronics and Biological Engng. 25: 21 - 28Google Scholar