Ray transmission and fluorescence ct imaging system and method

A ray transmission and fluorescence Computed Tomography (CT) imaging system, comprising:

• a ray source configured to emit a beam of rays;
• a rotational scanning device configured to perform rotational CT scanning on an object to be inspected;
• a transmission CT detector configured to receive the beam of rays which has passed through the object to be inspected after being emitted by the ray source;
• a fluorescence CT detector configured to receive fluorescent photons excited by irradiation of the beam of rays emitted by the ray source on the object to be inspected;
• a data acquisition unit configured to acquire a transmission data signal from the transmission CT detector and a fluorescence data signal from the fluorescence CT detector respectively;
• and
• a control and data processing unit configured to control the ray source to emit the beam of rays, control the rotational scanning device to perform the rotational CT scanning on the object to be inspected, and obtain a transmission CT image and a fluorescence CT image simultaneously based on the transmission data signal and the fluorescence data signal.