X-RAY PHASE-CONTRAST IMAGING SYSTEM AND IMAGING METHOD

摘要

An X-ray imaging system and imaging method. The X-ray imaging system has a distributed X-ray source (S), a fixed grating module (P), an X-ray detector, and a computer workstation. A detected object is located between the distributed X-ray source (S) and the fixed grating module (P). The computer workstation performs control to implement the following process: each light source of the distributed X-ray source (S) sequentially performs exposure, and emits an X-ray to the detected object; when exposure is performed each time, the X-ray detector receives the X-ray, wherein after one set of stepping exposure processes and data collection by the distributed X-ray source (S), light intensity of the X-ray at each pixel on the X-ray detector is indicated as a light intensity curve; the light intensity curve is compared with a light intensity curve in the absence of the detected object, and a pixel value of each pixel is obtained from a change of the light intensity curve; and an image of the detected object is rebuilt according to the obtained pixel value.