Figure 4From: Heart valve disease: investigation by cardiovascular magnetic resonanceExample of in-plane phase contrast velocity mapping in the LV outflow tract in a patient with dynamic outflow tract obstruction. Left: cine image; right: corresponding phase image from in-plane velocity mapping. The highest velocities can be visualised in the outflow tract (arrowed), below the aortic valve. LV = left ventricle; Ao = aorta.Back to article page