Luggage CT (Computed Tomography) article inspection system and reconstruction area determination method

The invention relates to a luggage CT (Computed Tomography) article inspection system and an image reconstruction area determination method, belongs to the technical field of safety systems, and solves the problem of waste of computing resources of a computer caused by a large-area blank area in a system reconstruction area in the prior art. The luggage CT article inspection system comprises a CT ray source, a CT slip ring, a CT detector, a conveyor belt, a conveyor belt motor, a motion control computer, a slip ring motor, a data processing computer, a light curtain transmitting end and a light curtain receiving end, the light curtain transmitting end is provided with a plurality of light emitters, the light curtain receiving end is provided with a plurality of light receptors, the light emitters emit light beams, and the light receptors receive the light beams from the light emitters to form a detection light curtain. The reconstruction area is the area where the object is located, and the situation that a l