Patent ID: 8155262

Claim:
A method of multiplexing computed tomography for simultaneous recording of a plurality of projection images of an object, the method comprising: (a) illuminating an object with a plurality of x-ray beams from a plurality of viewing angles, wherein each x-ray beam has a distinct waveform; (b) detecting the x-ray intensities of the plurality of x-ray beams as a function of time; and (c) extracting individual projection image data from the detected x-ray intensities based on the distinct waveforms of the x-ray beams for combining the projection image data to generate three-dimensional image data of the object, wherein extracting individual projection image data from the detected x-ray intensities comprises: (i) performing temporal Fourier transformation of the intensity versus time data; (ii) determining the intensity contribution from each of the x-ray beams based on a spectrum in a frequency space; and (iii) constructing the projection image data from each of the x-ray beams based on the extracted x-ray intensity from the frequency space.