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Combination device of detector and collimator for X-ray examination and method

A technology of combining device and detector, applied in the direction of using diaphragm/collimator, measuring device, irradiation device, etc., can solve the problem that the detector module cannot be disassembled and assembled, so as to improve the efficiency and reliability, and improve the efficiency of installation work. Effect

Active Publication Date: 2010-06-30
NUCTECH JIANGSU CO LTD +1
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  • Summary
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  • Application Information

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Problems solved by technology

[0004] Another object of the present invention is to provide a combination device of a detector and a collimator, which can solve the problem that the detector module cannot be disassembled independently of the grid collimator

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  • Combination device of detector and collimator for X-ray examination and method
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  • Combination device of detector and collimator for X-ray examination and method

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Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings. It should be understood by those skilled in the art that the following embodiments are only for illustration purposes, and are not intended to limit the present invention.

[0025] Such as figure 1 As shown, the combined device of detector and collimator of the present invention (also can be referred to as rear collimation structure) can for example be used for X-ray luggage bag inspection, comprises detector 1, detector arm frame (also can be referred to as support jib) 2 and grid collimator 3. also figure 1 Also shown in the arm frame mounting plate 4, the detection channel 5 and the radiation source 6. Such as figure 2 As shown, the radiation emitted by the radiation source 6 passes through the detection channel 5, and the radiation penetrates the detected object and reaches the detector crystal, and the generated electrical signal is transmitted to the system fo...

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Abstract

The invention relates to a combination device of detector and collimator for X-ray examination and a method. The combination device comprises a plurality of detectors, an arc supporting arm and a grid collimator, wherein the arc supporting arm is provided with a gap running through the inner side and the outer side along an arc direction; the grid collimator comprises a plurality of grids; the plurality of detectors are arranged at the outer side of the arc supporting arm along the arc direction; the grid collimator is arranged at the inner side of the arc supporting arm along the arc direction; and the corresponding detectors and the corresponding grids are aligned along a direction directing to the circle center of the arc supporting arm through the gap of the arc supporting arm. The combination device can improve the efficiency and the reliability of the grid collimator and can also solve the problem that detector modules cannot be disassembled and assembled independent of the gridcollimator.

Description

technical field [0001] The present invention relates to radiation imaging detection technology such as CT type X-ray security inspection system, and more specifically relates to the rear collimator structure of this inspection system. Background technique [0002] In the existing CT-type radiation imaging inspection system, the X-ray beam emitted by the radiation source passes through the object to be inspected and reaches the electrical signal generated by the detector crystal, and the data is obtained through calculation, such as those disclosed in CN1937100A and CN2403020Y. However, X-rays will also be reflected while passing through the object to be inspected. After one or more reflections, part of the reflected rays will enter the detector crystal again, causing errors in the electrical signal of the detector. In order to minimize the error, the current method is basically to add a grid partition on the detector. However, since the grid on each detector is composed of ...

Claims

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Application Information

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IPC IPC(8): G01N23/00G21K1/02G21K5/00
Inventor 刘明宋全伟孙尚民苗齐田
Owner NUCTECH JIANGSU CO LTD
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