Stationary real time CT imaging system and method thereof

A stationary real-time CT imaging system, including a bed control unit, a CT host and interface unit, a power control unit, a main processor, and a scan host, wherein:

• the scan host includes an annular scanning x-ray source and an annular photon-counting detector, said annular scanning x-ray source and said annular photon counting detector being in different planes parallel to each other;
• the annular scanning x-ray source includes a plurality of scanning x-ray sources closely arrayed in a ring, and the annular photon-counting detector includes a plurality of photon-counting detector modules closely arrayed in a ring;
• the scanning x-ray source is configured to sequentially emit pencil beam x-rays to corresponding photon counting detector module, the x-rays penetrating through an object, wherein the photon counting detector modules send corresponding exposure information, via the scan host and the main processor, to the CT host and interface unit, and the CT host and interface unit completes reconstruction and visual reproduction of an image in real time,
• wherein the pencil beam x-ray exposes on an area at each moment while only pixels of the photon counting detector in the area are ready to acquire the exposure information and pixels of the photon counting detectors not in the area do not work.