A method for delivering an elongated medical device along a path to a target location using a catheter procedure system includes generating a mask of the path, tracking a position of a distal portion of the elongated medical device based on a set of real-time images and determining a remaining path length based at least on the position of the distal portion of the elongated medical device. The remaining path length is a distance between the distal portion of the elongated medical device and the target location. The remaining path length decreases as the distal portion of the elongated medical device approaches the target location.