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Intracardiac echocardiogram image of the right (**) and left atrial disc (*) of an Amplatzer PFO Occluder (top) and Gore Cardioform Septal Occluder (bottom) before the release of the device. Note the splaying of the discs at the aortic rim. AV indicates aortic valve; LA, left atrium; RA, right atrium.
