Abstract: One aspect of the invention provides an injection catheter system including an elongated sheath having a sheath lumen, extending from a distal end to a proximal end, and a catheter. In one embodiment the catheter includes an elongated member having a lumen and an expandable frame including a plurality of struts extending distally from the distal end of the elongated member and attaching to a tip at their distal ends. A graft material attaches to and extends between a proximal portion of the plurality of struts and to the elongated member, forming a collapsible funnel. Another aspect of the invention provides a method of using such a system for visualizing a target region within a vessel or organ of a subject.