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In-vivo estimations of the nonlinear pressure-volume relationship of the aorta and instantaneous left ventricular volume

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Abstract

A method is presented in this paper for the in-vivo estimation of the nonlinear pressure-volume relationship of the human aorta. The method is based on nonlinear elastic reservoir theory and utilizes clinical data that can be obtained with a high degree of accuracy, namely stroke volume, end diastolic ventricular volume and aortic pressure trace data. The computational procedure is described and then carried out for six cardiac patients. A method for the estimation of instantaneous left ventricular volume during the ejection period based on the considered nonlinear elastic reservoir theory is also presented. The method is applied for the six cardiac patients cited and the results compared with those obtained for the same subjects by a method of estimation based on linear elastic reservoir theory described in a previous paper by the author (1969).

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Authors and Affiliations

  1. Department of Radiology, Harvard Medical School and Peter Bent Brigham Hospital, Boston, Massachusetts

    M. F. Conroy

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  1. M. F. Conroy
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Conroy, M.F. In-vivo estimations of the nonlinear pressure-volume relationship of the aorta and instantaneous left ventricular volume. Bulletin of Mathematical Biophysics 32, 155–172 (1970). https://doi.org/10.1007/BF02476882

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