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Dual energy x-ray array detector

An array detector and X-ray technology, which is applied in the field of radiation detection, can solve the problems that the scintillator array is not easy to be accurately aligned, the distance is far away, and the material identification ability of the scanning system is affected, so as to facilitate manufacturing and use, improve the identification ability, Accurate effect

Active Publication Date: 2011-01-05
NUCTECH CO LTD
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Problems solved by technology

[0004] This traditional dual-energy X-ray array detector is assembled from several parts, and each part requires an independent support mechanism for installation and structural positioning. Accurate alignment and distance, so this structure is not conducive to sampling the high and low energy channels in the dual-energy X-ray array detector at the same ray position, which will affect the material identification ability of the scanning system

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  • Dual energy x-ray array detector

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Embodiment Construction

[0024] figure 2 It is a schematic diagram of Embodiment 1 of the dual-energy X-ray array detector of the present invention. As shown in the figure, 201 and 202 are the low-energy scintillator array and the high-energy scintillator array respectively, 203 and 204 are the first photodiode array and the second photodiode array respectively, 205 and 206 are the first filter and the second photodiode array respectively. The filter, 207 is a PCB board. As shown in the figure, the above-mentioned low-energy scintillator array 201, high-energy scintillator array 202, first photodiode array 203, second photodiode array 204, first filter 205 and second filter 206 are bonded or welded. integrated on the PCB board 207 .

[0025] When the X-ray 200 is incident from the low-energy scintillator array 201 , it first deposits energy inside the low-energy scintillator array to excite scintillation light, and the first photodiode array 203 converts the scintillation light signal into a low-en...

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Abstract

The invention provides a dual energy x-ray array detector, which comprises a first scintillator array, a first photodiode array, a first filter, a PCB (Printed Circuit Board), a second filter, a second photodiode array and a second scintillator array respectively in the incidence direction of an x-ray, wherein all the components are integrated into a component. The dual energy x-ray array detector can measure the relative differences of a low-energy part and a high-energy part in an energy spectrum of the x-ray which penetrates through an object, thereby providing the reference for distinguishing materials.

Description

technical field [0001] The invention relates to a radiation imaging system detector, in particular to a dual-energy X-ray array detector used in an X-ray radiation imaging system, and belongs to the technical field of radiation detection. Background technique [0002] After the X-ray penetrates the object to be inspected, its energy spectrum will change, and these changes are related to the material composition of the object to be inspected. The traditional dual-energy X-ray array detector is composed of high-energy and low-energy detectors, each of which includes a scintillator array and a photodiode array. The low-energy array detector is arranged on the side close to the object to be inspected, and mainly absorbs the low-energy part of the X-ray energy spectrum, and the high-energy array detector is arranged behind the low-energy array detector, and mainly absorbs the high-energy part of the X-ray energy spectrum. Generally, a filter is arranged between the low-energy ar...

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Application Information

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IPC IPC(8): G01T1/20G01T1/202G01N23/04
Inventor 赵书清李元景代主得张清军
Owner NUCTECH CO LTD
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