CN211426809U - Detector with laminated structure and used for improving conversion absorption efficiency of visible light - Google Patents
Detector with laminated structure and used for improving conversion absorption efficiency of visible light Download PDFInfo
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- CN211426809U CN211426809U CN201922294386.2U CN201922294386U CN211426809U CN 211426809 U CN211426809 U CN 211426809U CN 201922294386 U CN201922294386 U CN 201922294386U CN 211426809 U CN211426809 U CN 211426809U
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Abstract
The utility model discloses a detector for improving visible light conversion absorption efficiency with laminated structure, it includes light source, fluorescent layer, first visible light sensor, second visible light sensor, first image acquisition device, second image acquisition device and treater, and the light source sends X light to the fluorescent layer direction, and X light changes visible light material and produces the first visible photon that moves to first visible light sensor and the second visible photon that moves to second visible light sensor under the X photon arouses; the first image acquisition device is used for obtaining a first image signal based on a first visible photon signal acquired by the first visible light sensor, and the second image acquisition device is used for obtaining a second image signal based on a second visible photon signal acquired by the second visible light sensor; the processor adds the two image signals to obtain an X-ray image signal. The utility model provides a detector can improve the absorption of X-ray, improves the sensitivity and the DQE of detector, and then reduces the X ray and uses the dose.
Description
Technical Field
The utility model relates to a X-ray detector imaging field especially relates to a detector that is used for improving visible light conversion absorption efficiency with stacked structure.
Background
In the prior art, the absorption efficiency of X-ray in an imaging system of an X-ray flat panel detection system plays a decisive role in the imaging quality, and whether an image meeting the application requirement quality can be obtained under low dosage is the basis for judging the X-ray imaging system technology and is the direction which is researched in the X-ray imaging field all the time recently. The existing X-ray flat panel detection system has low sensitivity and low X-ray absorption rate.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the prior art, the utility model provides a be used for improving visible light conversion absorption efficiency's detector with stacked structure to realize the efficient absorption of X-ray, technical scheme is as follows:
the utility model provides a detector with a laminated structure for improving the conversion and absorption efficiency of visible light, which comprises a light source, a fluorescent layer, a first visible light sensor arranged on the upper surface of the fluorescent layer, a second visible light sensor arranged on the lower surface of the fluorescent layer, a first image acquisition device connected with the first visible light sensor, a second image acquisition device connected with the second visible light sensor and a processor electrically connected with the first image acquisition device and the second image acquisition device, the light source is used for emitting X-ray to the direction of the fluorescent layer, the X-ray passes through the first visible light sensor and reaches the fluorescent layer, the fluorescent layer comprises an X-ray-to-visible light material which generates first visible photons moving to the first visible light sensor and second visible photons moving to the second visible light sensor under the excitation of X-photons;
the first image acquisition device is used for obtaining a first image signal based on a first visible photon signal acquired by the first visible light sensor; the second image acquisition device is used for obtaining a second image signal based on a second visible photon signal acquired by the second visible light sensor; the processor is used for carrying out addition operation on the first image signal and the second image signal to obtain an X-ray image signal.
Further, the X-ray to visible light material is CsI or other scintillators.
Furthermore, an encapsulation layer is arranged on the side edge of the fluorescent layer, and the encapsulation layer comprises an X fluorescent encapsulation material.
Further, the detector with the laminated structure for improving the conversion absorption efficiency of visible light also comprises a display component connected with the processor.
Further, the processor comprises an addition operation module and a data conversion module, wherein the addition operation module is used for performing addition operation on CCD photosensitive charge numbers of the first image signal and the second image signal to obtain an X-ray image and outputting an electric signal of the X-ray image; the data conversion module is used for converting the electric signals into a data format which can be displayed by the display component.
Further, the first visible light sensor and the second visible light sensor are both sheet-shaped structures.
Further, the first visible light sensor is matched with the upper surface shape of the fluorescent layer, and the second visible light sensor is matched with the lower surface shape of the fluorescent layer.
The utility model provides a beneficial effect that technical scheme brought as follows:
the utility model provides a detector for improving visible light conversion absorption efficiency with stacked structure can improve the absorption of X-ray, improves the sensitivity of detector, can improve the quantum detection efficiency of detector simultaneously, and then reduces clinical X-ray's use dosage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a detector having a stacked structure for improving the conversion absorption efficiency of visible light according to an embodiment of the present invention.
Wherein the reference numerals include: 1-a light source, 2-a fluorescent layer, 3-a first visible light sensor, 4-a second visible light sensor, 5-a first image acquisition device, 6-a second image acquisition device, 7-a processor and 8-an encapsulation layer.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
The utility model provides a detector for improving visible light conversion absorption efficiency with stacked structure, see fig. 1, it includes light source 1, fluorescent layer 2, sets up the first visible light sensor 3, the setting of 2 upper surfaces of fluorescent layer are in the second visible light sensor 4 of 2 lower surfaces of fluorescent layer, with first image acquisition device 5 that first visible light sensor 3 connects, with second image acquisition device 6 that second visible light sensor 4 connects and with the treater 7 that first image acquisition device 5 and the equal electricity of second image acquisition device 6 are connected. The first visible light sensor 3 and the second visible light sensor 4 are both sheet-like structures, such as flat plate structures. The shape of the first visible light sensor 3 is matched with that of the upper surface of the fluorescent layer 2, if the first visible light sensor 3 is of a square structure, the upper surface of the fluorescent layer 2 is of a square structure; the shape of the second visible light sensor 4 is matched with that of the lower surface of the fluorescent layer 2, and if the second visible light sensor 4 is of a square structure, the upper surface of the fluorescent layer 2 is also of a square structure.
The utility model provides a detector output X-ray image's that is used for improving visible light conversion absorption efficiency concrete implementation mode with stacked structure as follows: the light source 1 is configured to emit X-rays toward the fluorescent layer 2, the X-rays reach the fluorescent layer 2 after passing through the first visible light sensor 3, the fluorescent layer 2 includes an X-ray-to-visible light material, the X-ray-to-visible light material is Cs I (cesium iodide) or other scintillator, the scintillator is a material capable of emitting light after absorbing high-energy particles or rays, the X-ray-to-visible light material is directly available on the market, the X-ray-to-visible light material generates first visible photons moving toward the first visible light sensor 3 and second visible photons moving toward the second visible light sensor 4 under X-photon excitation, the moving directions of the first visible photons and the second visible photons are referred to the direction indicated by the arrow in the fluorescent layer 2 in fig. 1, the first visible photons are absorbed by the first visible light sensor 3, and the second visible photons are absorbed by the second visible light sensor 4, so that the visible photons are all absorbed, and the absorption efficiency of X-ray is greatly improved.
The first image acquisition device 5 is configured to obtain a first image signal based on a first visible photon signal acquired by the first visible light sensor 3, the second image acquisition device 6 is configured to obtain a second image signal based on a second visible photon signal acquired by the second visible light sensor 4, and the processor 7 is configured to perform addition operation on the first image signal and the second image signal to obtain an X-ray image signal for diagnosis.
Further, the detector with the laminated structure for improving the conversion absorption efficiency of visible light further comprises a display component connected with the processor 7. The processor 7 comprises an addition operation module and a data conversion module, wherein the addition operation module is used for performing addition operation on CCD photosensitive charge numbers of the first image signal and the second image signal to obtain an X-ray image and outputting an electric signal of the X-ray image; the data conversion module is used for converting the electric signals into a data format which can be displayed by the display component.
The side of fluorescent layer 2 is provided with encapsulating layer 8, just encapsulating layer 8 sets up between first visible light sensor 3 and second visible light sensor 4, encapsulating layer 8 is used for the cladding fluorescent layer, encapsulating layer 8 includes the fluorescent packaging material of X, packaging material's material is aluminium film and hot melt adhesive, and packaging material can directly purchase on the market.
The utility model provides a detector for improving visible light conversion absorption efficiency with range upon range of structure's main theory of operation as follows: x-rays reach the fluorescent layer 2 after being projected by the first visible light sensor 3, the X-ray-to-visible light material is excited by the X-photons to generate visible photons, one part of the photons move downwards and are absorbed by the second visible light sensor 4, the other part of the photons move upwards and are absorbed by the first visible light sensor 3, the absorption efficiency of the X-rays is greatly improved, the first visible light sensor 3 and the second visible light sensor 4 both absorb the visible photons, the first image acquisition device 5 and the second image acquisition device 6 both acquire images, the images are processed by the processor and are combined into one image, the DQE (quantum detection efficiency) can be improved, the absorption efficiency of the X-rays is further improved, and the dosage of clinical X-rays is reduced.
The utility model provides a detector for improving visible light conversion absorption efficiency with stacked structure can improve X-ray conversion absorption efficiency, utilizes this technique can reduce the use dosage of X ray and can obtain the image of the same quality in the in-service use, also just also equals to under the same X ray dosage condition, can improve X-optical detector's DQE (quantum conversion efficiency), can obtain the image that accords with clinical use under the low dose of X ray.
The utility model provides a be used for improving the working process of detector of visible light conversion absorption efficiency with stacked structure as follows: emitting X-rays to the direction of the fluorescent layer by using a light source, wherein the X-rays of the fluorescent layer are converted into visible light materials to generate first photons moving upwards and second photons moving downwards under the excitation of X-photons, a first visible light sensor is used for collecting a first photon signal, a second visible light sensor is used for collecting a second photon signal, the first visible light sensor is arranged on the upper surface of the fluorescent layer, the second visible light sensor is arranged on the lower surface of the fluorescent layer, and the X-rays reach the fluorescent layer after passing through the first visible light sensor; then, a first image signal is obtained by utilizing a first image acquisition device based on a first photon signal acquired by a first visible light sensor, and a second image signal is obtained by utilizing a second image acquisition device based on a second photon signal acquired by a second visible light sensor; and finally, performing image addition operation on the first image signal and the second image signal in the step S3 by using a processor, and synthesizing to obtain an X-ray image signal, specifically, the first image signal includes the number of CCD photosensitive charges at each pixel position, the second image signal includes the number of CCD photosensitive charges at each pixel position, the image addition operation includes addition operation of the number of CCD photosensitive charges, that is, the number of CCD photosensitive charges at each pixel position in the first image signal and the number of CCD photosensitive charges at the corresponding pixel position in the second image signal are added to obtain a sum of the number of CCD photosensitive charges at the corresponding pixel position, and an X-ray image signal for diagnosis is obtained according to the sum of the number of CCD photosensitive charges at the corresponding pixel position.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A detector with a laminated structure and used for improving conversion absorption efficiency of visible light is characterized by comprising a light source (1), a fluorescent layer (2), a first visible light sensor (3) arranged on the upper surface of the fluorescent layer (2), a second visible light sensor (4) arranged on the lower surface of the fluorescent layer (2), a first image acquisition device (5) connected with the first visible light sensor (3), a second image acquisition device (6) connected with the second visible light sensor (4) and a processor (7) electrically connected with the first image acquisition device (5) and the second image acquisition device (6),
the light source (1) is used for emitting X-rays towards the direction of the fluorescent layer (2), the X-rays reach the fluorescent layer (2) after passing through the first visible light sensor (3), the fluorescent layer (2) comprises an X-ray-to-visible light material, and the X-ray-to-visible light material generates first visible photons moving towards the first visible light sensor (3) and second visible photons moving towards the second visible light sensor (4) under the excitation of X-photons;
the first image acquisition device (5) is used for obtaining a first image signal based on a first visible photon signal acquired by the first visible light sensor (3);
the second image acquisition device (6) is used for obtaining a second image signal based on a second visible photon signal acquired by the second visible light sensor (4);
the processor (7) is used for carrying out addition operation on the first image signal and the second image signal to obtain an X-ray image signal.
2. The detector of claim 1, wherein the X-ray to visible light conversion material is CsI or other scintillator.
3. The detector with laminated structure for improving the conversion absorption efficiency of visible light according to claim 1, characterized in that the side of the fluorescent layer (2) is provided with an encapsulation layer (8), and the encapsulation layer (8) comprises an encapsulation material composition of X-fluorescence.
4. The detector with a laminated structure for improving conversion and absorption efficiency of visible light according to claim 1, characterized in that the detector with a laminated structure for improving conversion and absorption efficiency of visible light further comprises a display component connected with the processor (7).
5. The detector with laminated structure for improving conversion absorption efficiency of visible light according to claim 4, wherein the processor (7) comprises an addition operation module and a data conversion module,
the addition operation module is used for performing addition operation on the CCD photosensitive charge number of the first image signal and the second image signal to obtain an X-ray image and outputting an electric signal of the X-ray image;
the data conversion module is used for converting the electric signals into a data format which can be displayed by the display component.
6. The detector with a laminated structure for improving conversion absorption efficiency of visible light according to claim 1, wherein the first visible light sensor (3) and the second visible light sensor (4) are both sheet-like structures.
7. The detector with a laminated structure for improving conversion absorption efficiency of visible light according to claim 6, wherein the first visible light sensor (3) is matched in shape with the upper surface of the fluorescent layer (2), and the second visible light sensor (4) is matched in shape with the lower surface of the fluorescent layer (2).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987982A (en) * | 2019-12-19 | 2020-04-10 | 江苏康众数字医疗科技股份有限公司 | X-ray high-absorptivity detection system and image imaging method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987982A (en) * | 2019-12-19 | 2020-04-10 | 江苏康众数字医疗科技股份有限公司 | X-ray high-absorptivity detection system and image imaging method |
| WO2021120840A1 (en) * | 2019-12-19 | 2021-06-24 | 江苏康众数字医疗科技股份有限公司 | X-ray high-absorptivity detection system and image imaging method |
| US12038543B2 (en) | 2019-12-19 | 2024-07-16 | CareRay Digital Medical Technology Co., Ltd. | X-ray high-absorptivity detection system and image imaging method |
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