Patent ID: 7835011
Filing Date: 2010-11-16
Classification: A61B,G01B

Abstract:
1. A method for generating an X-ray image of a subject positioned on a first support within an X-ray imaging system, said method comprising: acquiring X-ray image data of the subject at a view angle with the first support at each position of a plurality of positions, each of said positions including an X-position, a Y-position, and a Z-position; generating a beam of light; reflecting a first portion of the beam of light from the first support to generate a reflected beam; combining the reflected beam with a second portion of the beam of light to generate a combined beam, the combined beam including an interference fringe pattern; counting a number of fringes within the interference fringe pattern of the combined beam of light; generating a pulsed electric signal representative of the counted number of fringes; determining a change in the X-position, the Y-position, and the Z-position of the first support by computing the X-position, the Y-position, and the Z-position using the pulsed electric signal to generate a measurement of the position of the first support for each of the plurality of positions; and reconstructing the X-ray image of the subject using the acquired X-ray image data and the generated measurement of the first support at each of the plurality of positions.