MR: Quantification (PISA)


The PISA method, based on the principle of conservation of flow and the continuity equation, is the best method for quantifying the ERO and the volume of MR.


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Doppler color flow “proximal isovelocity surface area” method for estimating volume flow rate: effect of orifice shape and machine factors. JACC 1991; 17; 1103

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1. Proximal Isovelocity Hemispheric Radius from the Orifice?

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