Patent ID: 6447163
Filing Date: 2002-09-10
Classification: A61B,G01N

Abstract:
A method for positioning an optical camera with respect to an X-ray source relative to an X-ray detector plane, comprising the steps of:positioning at least two off-plane markers above the X-ray detector plane and at least four on-plane markers on the X-ray detector plane; acquiring an X-ray image of the off-plane markers and the on-plane markers; acquiring an optical image of the off-plane and on-plane markers; warping one image onto the other with respect to the four on-plane markers; and determining whether the respective X-ray and optical images of the off-plane markers coincide and, if not, adjusting the orientation of the optical camera and reacquiring and warping one image onto the other, until the X-ray and optical images of the off-plane markers coincide.