Patent ID: 7724869

Claim:
A system for detecting x-rays comprising: a radiation source for generating x-rays forming a fan-shaped beam; a detector array comprising: a first linear array for detecting a first x-ray and a second x-ray which penetrate through a first plurality of parts of an object under inspection to acquire first values and second values for the first plurality of parts, wherein the second x-ray and the first x-ray are alternately emitted from the radiation source; and a second linear array arranged parallel to the first linear array for detecting the first x-ray and the second x-ray which penetrate through a second plurality of parts of the object to acquire third values and fourth values for the second plurality of parts, wherein the object moves relative to the radiation source and first and second linear array along a straight line substantially perpendicular to a plane in which the x-rays are arranged, and the at least one of first plurality of parts is the same as at least one of the second plurality of parts; processing module for matching the second to third detection values to obtain the detection values for the same parts of the first plurality of parts and the second plurality of parts under the first x-ray and the second x-ray.