1. A surgical navigation method comprising the acts of: acquiring a three-dimensional representation of a region of interest of a patient; establishing a coordinate frame based on the position and orientation of a first electromagnetic device with respect to the patient; acquiring two or more two-dimensional fluoroscopic images of the patient; providing the three-dimensional representation, the two or more two-dimensional fluoroscopic images, and the coordinate frame to a computerized navigation system; mapping the two or more two-dimensional fluoroscopic images to the coordinate frame; registering the two or more two-dimensional fluoroscopic images to the three dimensional representation of the region of interest to produce a navigable three-dimensional visualization of the patient.