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X-RAY IMAGING SYSTEM AND X-RAY IMAGING METHOD

  • US 20120051498A1
  • Filed: 08/23/2011
  • Published: 03/01/2012
  • Est. Priority Date: 08/30/2010
  • Status: Abandoned Application
First Claim
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1. An X-ray imaging system for irradiating a subject with X ray from an X-ray source at a plurality of different angles, detecting the X ray transmitted through the subject with an X ray detector to acquire X-ray images, and reconstructing an X-ray tomographic image, which is a tomosynthesis image, from the X-ray images, the system comprising:

  • a region setting unit for setting a region of interest on a pre-shot image or a previously acquired X-ray tomographic image,an imaging control unit for continuously varying an aperture formed by collimator blades according to a position of the X-ray source to image the region of interest and acquiring projection data of the X-ray images in accordance with the position of the X-ray source, andan image reconstructing unit for reconstructing the X-ray tomographic image from the projection data of the X-ray images of the region of interest,wherein the aperture formed by the collimator blades are varied so that all the X-ray images formed on the X-ray detector is rectangular regardless of the position of the X-ray source.

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