A method and device for delineating structures includes a catheter for insertion at the structure, an expandable component operatively having proximal, distal and intermediate segments shiftable between a collapsed state and an expanded state, with the intermediate segment shiftable independently of the proximal and distal segments. A marking medium is carried by a portion of the intermediate segment, and the marking medium detectable using a selected imaging device. The marking medium is arranged to be transferable from the intermediate segment to portions of the cardiovascular structure upon shifting the intermediate segment to the expanded position with the intermediate segment in the desired position.
