| 摘要 |
The present invention relates systems and methods for phase-contrast x-ray imaging of an object. In one embodiment, the system includes an x-ray source, a detector, and an object-map generator. The x-ray source transmits x-rays, and the detector is positioned so as to receive at least a portion of the x-rays transmitted by the x-ray source and output an image signal indicative of an intensity measurement of the x-rays received. The object is positioned between the x-ray source and the detector. The detector is then used to acquire intensity measurements at two different positions and output the same to the object-map generator. The object-map generator then utilizes the image signals of the detector, along with algorithms, including phase-retrieval algorithms to generate an attenuation-map and a phase-map for the object. The present invention also include systems and methods utilizing a dual-detector arrangement, a multi-source arrangement, and a mosaic source-detector arrangement.
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