Figure 6From: Heart valve disease: investigation by cardiovascular magnetic resonanceThrough-plane SSFP image in systole through the valve tips in a patient with aortic stenosis. The tips are outlined by dark (low signal), partly due to signal loss from shear. The orifice area can in this case be measured directly by planimetry, but this should not be attempted if the outlines are unclear on the available cine images.Back to article page