| 摘要 |
The present invention provides for an x-ray system and method using dynam ic automated spatial modulation of an x-ray beam. The system includes an x-ray source transmitting a spatially modulated beam towards an object to be imaged, an x - ray detector receiving the beam and measuring a plurality of intensities across the beam, a beam processor controlling the beam intensity profile, and an image processo r producing an output image signal. The detector produces a residual image bas ed on at least the intensities measured at the detector. The beam intensity profile m ay be based on at least some of the following: (a) the residual image from the x-r ay detector, (b) current beam intensities, (c) regions on interest in the image, and (d) predicted or measured object motion in the image. The system's output image is based on o ne or more of said residual image and said beam intensity signal.
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