A system for navigating an image-guided object through an imaged subject
supported on table in relation to an image acquired by an image detector
is provided. The system includes a first tracking element attached to the
patient, and a second tracking element attached at the table. The first
and second tracking elements define first and second coordinate systems.
A controller is operable to register the second coordinate system with a
third coordinate system defined by the image detector, measure a spatial
relation between the first tracking element and the second tracking
element, register the first coordinate system with the third local
coordinate system defined by the image detector based on the spatial
relation between the first and second tracking elements, and generating a
composite image comprising a virtual image of the object in spatial
relation to the image of the imaged subject acquired by the image
detector.