and 7 the exemplary device apparatus can contain a flushing port to remove blood between the apparatus and the valve the exemplary device apparatus of fig6 and 7 can include an imaging catheter 600 that can be delivered by a guide catheter 602 which is connected to a flushing system in this exemplary embodiment the distal end of a guide catheter 606 can be positioned close proximity to the distal end of the imaging catheter 602 flushing medium can be introduced into the guide catheter 602 by either a manual or an automatic flushing system a flushing medium 604 can be delivered into the field of view of the distal imaging optics and replaces the blood within the field of view in yet another exemplary embodiment the exemplary device apparatus can be synchronized with a separate flushing system to remove blood from the aortic valve according to yet a further exemplary embodiment of the present disclosure the exemplary device apparatus can include a radiographic marker that is visible under fluoroscopy as shown in fig8 in another exemplary embodiment the exemplary device apparatus can include a full field imaging technique within the guide catheter to visualize the placement of the apparatus and the location where information about.