1. A method of registering real-time sensor location data to previously acquired images of a branched network of body lumens comprising: placing a probe containing a sensor at a distal end thereof into a branched network of body lumens in a patient; performing an initial registration between a real-time sensor location and a previously acquired image selected a plurality of previously acquired images of said branched network; receiving data from said sensor to determine an approximate location of said sensor; using said approximate location of said sensor to create a subgroup of said plurality of images, said subgroup containing one or more previously acquired images corresponding to said approximate location; and, selecting an image from said subgroup that most accurately corresponds to said approximate location to update said initial registration using an image-based registration technique.