X-ray imaging device and X-ray imaging method

X-ray imaging device and X-ray imaging method

  • CN 102,197,303 A
  • Filed: 10/27/2009
  • Published: 09/21/2011
  • Est. Priority Date: 10/29/2008
  • Status: Active Application
First Claim
Patent Images

1. x-ray imaging device comprises:

  • X-ray source;

    Phase grating is used for transmission and forms the interference strength distribution from the X ray of x-ray source and by the Talbot effect;

    Absorption grating is used for part and covers the interference strength distribution that is formed by phase grating and produce ripple;

    Detecting device is used to detect the intensity distributions by the ripple of absorption grating generation;

    WithArithmetical unit is used for according to the intensity distributions of the ripple that is detected by detecting device with the information imaging of subject and export this information,Wherein, arithmetical unit is carried out the processing that comprises following step;

    The Fourier transform step is used for for being carried out Fourier transform and obtained spatial frequency spectrum by the intensity distributions of the ripple of detector acquisition;

    WithThe phase place recovering step is used for making the spectrum corresponding with carrier frequency to separate with the spatial frequency spectrum that obtains in the Fourier transform step, carries out inverse Fourier transform for the spectrum of being separated, and obtains differential phase image.

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