| 摘要 |
An X-ray imaging apparatus is provided. The X-ray imaging apparatus (100) comprising: an X-ray source unit (101) including an X-ray source for emitting an X-ray beam, the X-ray source unit being movable such that the X-ray beam to be emitted is movable along an axis (X); an X-ray detecting unit (102) comprising an X-ray detector (12) for detecting the X-ray beam, the X-ray detecting unit (102) being movable along the axis (X); and a control unit (105) adapted to control the movement of the X-ray detecting unit (102) in response to a movement of the X-ray source unit (101); wherein the X-ray source unit (101) further includes a laser for emitting a laser beam (La) for indicating a center of the X-ray beam along the axis (X); the X-ray detecting unit (102) further comprises a plurality of sensors (104) arranged along the X-axis (X), each of the plurality of sensors (104) being configured to sense the laser beam (La) and to generate a sensor signal (S, S2, S3, S4, S) indicative of its sensing of the laser beam (La); and the control unit (105) is adapted to control the movement of the X-ray detecting unit (102), based on the sensor signals (S, S2, S3, S4, S) generated by the plurality of sensors. |
