In Chapter 25 we noted that the posterior leaflet regions in the vicinity of Markers #5 and 6 and #9 and 11 were undergoing consistently large dimensional changes with valve opening and closing in each of the three hearts studied, and thus might be considered as prime candidates for the large changes of the posterior leaflet perimeter throughout the cardiac cycle. In this chapter we explore the kinematics of these regions in greater detail. Again, we provide Figure 26.1 as a reference for marker placement in these studies.
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