Patent ID: 6466638
Filing Date: 2002-10-15
Classification: A61B,G06T,Y10S

Abstract:
A method for reconstructing an image of a subject, comprising:exposing said subject to x-rays from a source rotated about said subject in an irregular path; obtaining exposure data; reconstructing said image from said exposure data by mapping a reconstructed image point from a known coordinate; and determining image coordinates (ci, li) of a reprojected point from a known position (xi,yi,zi) using: ci=m11&it;xi+m12&it;yi+m13&it;zi+m14m31&it;xi+m32&it;yi+m33&it;zi+m34li=m21&it;xi+m22&it;yi+m23&it;zi+m24m41&it;xi+m42&it;yi+m43&it;zi+m44where: m11, m12 . . . m44 are calibration factors.