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Three-dimensional modeling and flow patterns determination in the left ventricle using computational fluid dynamics

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2 Author(s)
Taylor, T.W. ; Dept. of Bio-Med. Eng., Tokai Univ., Shizuoka, Japan ; Yamaguchi, T.

A realistic model of the left ventricle of the heart was constructed using a cast from a dog heart. The purpose of this investigation was to determine the blood flow in the left ventricle in both systole and diastole and to understand what the effect of a previous cardiac cycle was on the next cardiac cycle. Runs done with an ejection fraction of 60% showed little variation from one cardiac cycle to another after the third cardiac cycle was completed; the maximum velocity could vary by over 30% between the first and second cardiac cycles. In systole, centerline and cross-sectional velocity vectors greatly increased in magnitude at the aortic outlet, and most of the pressure drop occurred in the top 15% of the heart. The diastolic phase showed complex vortex formation not seen in the systolic contractions

Published in:

Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Date of Conference:

3-6 Nov 1994

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