Computed tomography device based on straight trajectory and x-ray imaging device

A straight trajectory X-ray imaging device, comprising:

• a ray generating unit for generating ray beam within a specific range of field angle,
• a first collimator for restraining the ray beam;
• a channel for an object to be inspected though which the object to be inspected could pass;
• and a ray receiving unit for receiving the ray beam arranged in order;
• wherein the ray beam generated by the ray generating unit is received by the ray receiving unit after penetrating the first collimator and the object to be inspected in order, and
• the ray receiving unit transmits the received ray beam data to an imaging computer to process and display the data;
• the ray generating unit is static and the first collimator moves toward the same direction as the ray receiving unit moves toward;
• and
• when performing scanning, the object to be inspected is static in the moving channel, the first collimator and the ray receiving unit perform a unidirectional movement for only once.