Figure 2a: Box plots showing systolic velocities measured with PW-DTI and TVI at three different annuli. Boxplot is defined by median, quartiles (box), min-max (whiskers) and circle markers if outliers are present. (MA=mitral annulus, AA = aortic annulus, TA=tricuspid annulus, PW-DTI=pulsed wave tissue Doppler imaging, TVI=colour coded tissue Doppler imaging) (n=24).