Detector array and device using the same

A method of detecting x-rays forming a fan-shaped beam with a detector array comprising a first linear array and a second linear array arranged parallel to each other, the method comprising the steps of:

• generating from a radiation source alternately a first x-ray and a second x-ray to penetrate through an object under inspection;
• detecting the first x-ray and the second x-ray which penetrate through a first plurality of parts of the object with the first linear array, to acquire first values and second values for the first plurality of parts;
• detecting the first x-ray and the second x-ray which penetrate through a second plurality of parts of the object with the second linear array, 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 at least one of the first plurality of parts is the same as at least one of the second plurality of parts;
• and
• 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.

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, a second x-ray and a third x-ray which penetrate through a first plurality of parts of an object under inspection to acquire first values, second values and third values for the first plurality of parts, wherein the first x-ray, the second x-ray and the third x-ray are alternately emitted from the radiation source;
• a second linear array arranged parallel to the first linear array for detecting the first x-ray, the second x-ray and the third x-ray which penetrate through the second plurality of parts of the object to acquire fourth values, fifth values and sixth values for the second plurality of parts, wherein at least one of the first plurality of parts is the same as at least one of the second plurality of pans;
• a third linear array arranged parallel to the first linear array and the second linear array for detecting the first x-ray, the second x-ray and the third x ray which penetrate through a third plurality of parts of the object to acquire seventh values, eighth values and ninth values for the third plurality of parts, wherein the object moves relative to the radiation source and first and second and third linear array along a straight line substantially perpendicular to a plane in which the x-rays are arranged, and at least one of the second plurality of parts is the same as at least one of the third plurality of parts;
• and
• processing module for matching the second and fourth 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, matching the third, fifth and seventh detection values to obtain the detection values for the same parts of the first plurality of parts and the second plurality of parts and the third plurality of parts under the first x-ray, the second x-ray and the third x-ray, and matching sixth and eighth detection values to obtain the detection values for the same parts of the second plurality of parts and the third plurality of parts.