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Figure 5 Pulse sequence scheme imaging showing microbubble retention to the endothelium in the carotid arteries (CAs) submitted to balloon-stretching (at left) and absence of retention in the contralateral control vessels (at right). In pig 5, the left CA was initially dissected, and the right CA was then submitted to the balloon dilation and considered for analysis. In this pig, the control demonstrated in the figure is the baseline imaging before dilation of the vessel. For an accompanying video corresponding to Figure 5 (Video 1), please see the September 1 issue of JACC at www.cardiosource.com/jacc.html.