| CPC A61B 34/20 (2016.02) [A61B 5/064 (2013.01); A61B 6/485 (2013.01); A61B 6/547 (2013.01); A61B 34/30 (2016.02); A61B 90/37 (2016.02); A61B 90/96 (2016.02); A61B 90/98 (2016.02); A61B 2017/00876 (2013.01); A61B 17/17 (2013.01); A61B 2034/2051 (2016.02); A61B 2034/2055 (2016.02); A61B 2034/2057 (2016.02); A61B 2034/2072 (2016.02); A61B 2090/034 (2016.02); A61B 2090/0811 (2016.02); A61B 90/11 (2016.02); A61B 2090/3937 (2016.02); A61B 2090/3945 (2016.02); A61B 2090/3966 (2016.02); A61B 2090/3983 (2016.02)] | 20 Claims |

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1. A surgical navigation system with a registration fixture for registration of 2-dimensional medical images to a three-dimensional camera tracking space comprising:
a registration fixture adapted to be attached to an x-ray imaging device and including:
a first structure having a plurality of spaced radiopaque markers in a first pattern;
a second structure having a plurality of spaced radiopaque markers in a second pattern, the first and second structures being spaced from each other; and
a plurality of fixed optical markers;
a surgical system including:
tracking cameras for tracking the optical markers of the registration fixture;
a processor configured to:
receive first and second 2-dimensional medical images taken by the x-ray imaging device at different angles while the tracking cameras are tracking the optical markers of the registration fixture; and
register the received first and second medical images with a 3-dimensional optical tracking space based on vectors extending between an emitter and a collector of the imaging device that form a conical pattern so as to map points on the first and second medical images to the 3-dimensional optical tracking space.
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