A mechanically and/or magnetically navigable catheter has an elongate body having a proximal and a distal end. At least one mechanically or magnetically responsive element is associated with the distal end of the elongate body for navigating the distal end in the body. At least one fiber optic sensor extends substantially along the length of the elongate body for use determining the location of at least one point along the length of the elongate body, which can be used as an input an automated navigation system.
