Numerical analysis of cardiopulmonary blood volumes in 113Inm radiocardiography (using flow model)

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Abstract
A theory of streamline flow of a viscous liquid was applied to the calculation of cardiac and pulmonary parameters (minute volume, stroke volume, right heart, pulmonary and left heart blood volumes) in a radiocardiographic model based on the modified .gamma. function. The practical feasibility of the formulations was tested using a physical flow model. The cardiopulmonary blood volumes measured from 14 normal [human] subjects were consistent with the results obtained by more complex techniques. The present method is manageable on a small computer and is well suited to clinical routine use in connection with standard single detector 113mIn radiocardiography.