Ct scanning system and ct scanning method

A CT scanning system, comprising:

• a conveying device, configured to move a scanned object in a scanning channel in a predetermined conveying direction, wherein the conveying device comprises a conveying surface for the scanned object to be placed;
• a distributed ray source, wherein the distributed ray source comprises m target points, the m target points are configured to be activated in a predetermined order to emit ray beams, m is a positive integer greater than or equal to 2;
• a detector array, wherein the detector array is configured to detect a ray emitted from the distributed ray source and passing through the scanned object, and to generate projection data according to the detected ray;
• and
• an image reconstruction device, wherein the image reconstruction device is configured to generate a computed tomography image of the scanned object according to the projection data,
• wherein the detector array comprises at least one row of detectors, each row of detectors comprises a plurality of detector modules, and in a plane perpendicular to the first axis, the plurality of detector modules of at least one row of detectors are arranged continuously along an arc line;
• and
• in a plane perpendicular to the first axis, at least one target point is offset from an arc center of the arc line.