Quantitation of mitral regurgitation: rationale, approach, and interpretation in clinical practice

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Figure 1 .

Colour flow imaging of the flow convergence in a patient with a flail posterior leaflet. The baseline of colour has been shifted down and the aliasing velocity (where the blue flow turns to yellow) is indicated by the arrow to the left. The radius of the flow convergence is measured between the crosses. LV, left ventricle; LA, left atrium.