CN105455836B - CT detector system - Google Patents
CT detector system Download PDFInfo
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- CN105455836B CN105455836B CN201410459599.5A CN201410459599A CN105455836B CN 105455836 B CN105455836 B CN 105455836B CN 201410459599 A CN201410459599 A CN 201410459599A CN 105455836 B CN105455836 B CN 105455836B
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000002591 computed tomography Methods 0.000 description 31
- 230000017525 heat dissipation Effects 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000013170 computed tomography imaging Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
A CT detector system comprises a mounting shell, a detection and acquisition module and an air inlet assembly; the mounting shell comprises a bottom plate and a top cover, the top cover covers the bottom plate, a mounting cavity is formed between the top cover and the bottom plate, and the top cover is provided with an air outlet; the air inlet component is arranged on one side of the top cover and blows air into the mounting shell; the detection and collection module is installed on the inner wall of top cap, and the detection and collection module includes closely arranged detection and collection module, and every data acquisition module and the air inlet subassembly of detecting and collection module set up in opposite directions. Above-mentioned CT detector system, data acquisition module and air inlet subassembly set up in opposite directions, and the air of air inlet subassembly introduction can directly dispel the heat to the electron device that generates heat of data acquisition module, then the air current flows from the air outlet on the top cap to bring out the inside heat of CT detector system, because the electron device that generates heat of data acquisition module directly exposes in the air current, the radiating efficiency is high, and need not design the radiating air duct, mechanical structure is simple.
Description
Technical Field
The invention relates to the field of computed tomography imaging devices, in particular to a CT detector system.
Background
A schematic structural diagram of a Computed Tomography (CT) apparatus is shown in fig. 1, in which an X-ray source 1 and a detector system 2 are fixed on a turntable 3, the turntable 3 rotates around a center, and a measured human body 4 is located between the X-ray source 1 and the detector system 2.
When the CT detector system works, a chip on the data acquisition module can generate a large amount of heat, so that the internal temperature of the CT detector system is continuously increased. The photodiode of the detector module is an important device for realizing photoelectric conversion, and the dark current in the detector module is increased by 15% when the temperature is increased by 1 ℃. At the same time, high temperatures also affect the service life of the electronic devices. The CT detector system is an important component for data acquisition in the CT apparatus, and the stability of the performance of the CT detector system directly affects the quality of the reconstructed image. In order to prevent the signal-to-noise ratio of the output signal of the detector from being reduced due to the increase of the dark current and prolong the service life of electronic devices, a CT detector system generally uses a fan to dissipate heat and control the temperature inside the CT detector system.
In a traditional CT detector system, a chip with higher power consumption on a data acquisition module and a detector module are positioned on the same side of a PCB (printed circuit board) of the data acquisition module. Usually, a heat dissipation air duct needs to be designed on the side of the detector module, and air blown by the air inlet fan takes away heat of the electronic device through the heat dissipation air duct and is blown out from the air outlet fan. In addition, an auxiliary heat dissipation part is usually required to be installed to conduct heat, so that heat is conducted to the heat dissipation air duct. Therefore, the conventional CT detector system needs to design a heat dissipation air duct on the main structure, and has a complicated mechanical structure and high manufacturing cost.
Disclosure of Invention
In view of the above, there is a need for a CT detector system that does not require a heat dissipation duct, has a simple mechanical structure, and is low in manufacturing cost.
A CT detector system comprises a mounting shell, a detection and acquisition module and an air inlet assembly;
the mounting shell comprises a bottom plate and a top cover, the top cover is covered on the bottom plate, a mounting cavity is formed between the top cover and the bottom plate, and the top cover is provided with an air outlet;
the air inlet assembly is arranged on one side of the top cover and blows air into the mounting shell;
the detection and collection module is installed the inner wall of top cap, the detection and collection module includes a plurality of processing module that closely arrange, every the detection and collection module includes connecting plate, detector module and data acquisition module the detector module with the data acquisition module is fixed respectively the both sides of connecting plate, the data acquisition module with the air inlet subassembly sets up in opposite directions.
In one of them embodiment, the top cap is the step form, the top cap includes backplate and step subassembly, the step subassembly includes first flat board, air-out board, second flat board and riser, first flat board the second flat board with the bottom plate is parallel, air-out board with the backplate is parallel, air-out board both ends respectively with first flat board with second flat board fixed connection, the both ends of riser respectively with the second flat board with bottom plate fixed connection, the air outlet is seted up on the air-out board, survey and gather the module and install on the backplate.
In one embodiment, the back plate is in an arc-shaped structure, and the air outlet plate is in an arc-shaped structure.
In one embodiment, a first airflow space is formed between the bottom plate and the second flat plate, a second airflow space is formed between the air outlet plate and the back plate, and the cross-sectional area of the first airflow space formed between the bottom plate and the second flat plate is larger than that of the second airflow space formed between the air outlet plate and the back plate.
In one embodiment, the heat generating electronics on the data acquisition module are all disposed on a side facing the airflow.
In one embodiment, the vertical plate is provided with a porous part, the porous part and the back plate are arranged oppositely, and the air inlet assembly is installed on one side, far away from the back plate, of the porous part.
In one embodiment, the connecting plate is provided with a through hole, and the detector module and the data acquisition module are electrically connected through a lead penetrating through the through hole.
In one embodiment, the air intake assembly includes a fan.
In one embodiment, the air intake assembly further comprises a filter screen, and the filter screen is located between the fan and the top cover.
In one embodiment, the air intake assembly is located outside the top cover.
Above-mentioned CT detector system, data acquisition module and air inlet subassembly set up in opposite directions, the air of air inlet subassembly introduction can directly dispel the heat to the electron device that generates heat of data acquisition module, then the air current flows from the air outlet on the top cap, thereby bring out the inside heat of CT detector system, because the electron device that generates heat of data acquisition module directly exposes in the air current, consequently the radiating effect is better, the radiating efficiency is high, and need not design the air duct that dispels the heat, mechanical structure is simple, reducible machine part's manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of a computed tomography imaging apparatus;
FIG. 2 is a schematic diagram of a CT detector system according to an embodiment;
FIG. 3 is a schematic structural view of a mounting housing of the CT detector system shown in FIG. 2;
FIG. 4 is a schematic diagram of a detection and acquisition module of the CT detector system shown in FIG. 2;
FIG. 5 is an exploded view of the detection and acquisition module shown in FIG. 4;
FIG. 6 is a schematic view of the detecting and collecting module shown in FIG. 4 mounted on a back plate;
FIG. 7 is a schematic view of the porous section and air intake assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 2, an embodiment of a CT detector system 100 includes a mounting housing 10, a detection and acquisition module 20, and an air intake assembly 30.
The mounting case 10 includes a base plate 110 and a top cover 120. The top cover 120 covers the bottom plate 110, and a mounting cavity is formed between the top cover 120 and the bottom plate 110. The detection and acquisition module 20 is arranged in the installation cavity. The air intake module 30 is disposed outside the top cover 120.
Referring also to fig. 3, the top cover 120 is stepped. The top cover 120 includes a back plate 124 and a step assembly 126. The back plate 124 has an arc-shaped structure. The step assembly 126 includes a first deck 1262, a vent deck 1264, a second deck 1266 and a riser 1268. The first plate 1262, the second plate 1266 and the base plate 110 are parallel. Two ends of the first flat plate 1262 are respectively fixedly connected with the back plate 124 and the air outlet plate 1264. The air outlet plate 1264 is in an arc-shaped structure. The outlet plate 1264 is parallel to the back plate 124. Two ends of the air outlet plate 1264 are fixedly connected with the first plate 1262 and the second plate 1266 respectively. The vertical plate 1268 is fixedly connected at its opposite ends to the second plate 1266 and the base plate 110, respectively. The air outlet 122 is opened on the air outlet plate 1264. Specifically, in the present embodiment, the air outlet 122 is opened at one end of the air outlet plate 1264 far from the second plate 1266. At this moment, the air current of air inlet subassembly 30 introduction can from the bottom up and survey and gather module 20 and carry out the heat exchange, and hot-air after the heat exchange can directly blow from air outlet 122, and the air that difficult to blow into to follow-up causes the influence, improves heat exchange efficiency, makes the radiating effect better.
After the detection and collection module 20 is mounted on the back plate 124, an air flowing space is formed among the detection and collection module 20, the first flat plate 1262, the air outlet plate 1264, the second flat plate 1266, the vertical plate 1268 and the bottom plate 110, and the air flow introduced by the air inlet component 30 flows through the air flowing space, takes away heat of the heating electronic device and then blows out from the air outlet on the air outlet plate 1264.
A first airflow space is formed between the base plate 110 and the second plate 1266. A second airflow space is formed between the air outlet plate 1264 and the back plate 124. Since the back plate 124 and the air outlet plate 1264 are both arc-shaped and parallel, the second air flow space is an annular air flow space. The cross-sectional area of the first airflow space formed by the bottom plate 110 and the second plate 1266 is larger than that of the second airflow space formed between the air outlet plate 1264 and the back plate 124. At the moment, after the airflow enters the second airflow space from the prison airflow space, the airflow velocity is improved, the phenomena of turbulence and the like are prevented, and the heat dissipation efficiency is improved.
The riser 1268 is provided with a plurality of holes 1269, the plurality of holes 1269 and the back plate 124 are arranged oppositely, and the air inlet component 30 is arranged on one side of the plurality of holes 1269 far away from the back plate 124. Air introduced by the air intake assembly 30 enters the mounting housing 10 through the small holes in the porous portion 1269. The air intake assembly 30 is mounted on a side of the porous portion 1269 away from the back plate 124, and the porous portion 1269 can serve as an electromagnetic shield for opening a large-diameter air inlet.
Referring to fig. 4 and 5, the detecting and collecting module 20 is mounted on the back plate 124. The detection and acquisition module 20 includes a plurality of closely spaced detection and acquisition modules 22. Each detection and acquisition module 22 includes a connection board 222, a detector module 224, and a data acquisition module 226. The detector module 224 and the data acquisition module 226 are respectively fixed on both sides of the connection plate 222. The connection plate 222 is provided with a through hole (not shown), and the detector module 224 and the data acquisition module 226 are connected by a connector passing through the through hole. The detector module 224 mainly includes a scintillation crystal, a photodiode, a circuit, a connector, etc. disposed on the PCB board. The detector module 224 primarily functions to convert X-rays to electrical signals. The data acquisition module 226 may be a circuit board with heat generating electronics 227 soldered thereto. The heating electronics 227 are an a/D conversion chip, an FPGA chip, a temperature sensor, etc. The heat-generating electronics on the data acquisition module 226 are all disposed on the side facing the airflow, i.e., the side facing away from the detector module 224. The data acquisition module 226 mainly functions to convert the analog electrical signal acquired by the detector module 224 into a digital signal for output. The data acquisition module 226 is easy to generate heat and dissipate a large amount of heat when in operation. Each data acquisition module 226 is approximately equidistant from the intake assembly 30. At this time, the temperature gradient distribution is substantially the same, the temperature of each data acquisition module 226 is substantially the same, the temperature consistency is good, and the improvement of the CT image quality is facilitated.
Referring to fig. 1 and 6, the data acquisition module 226 is disposed opposite to the air intake assembly 30. The process modules 22 are secured to the backplane 124 by connecting plates 222 at both ends. When the back plate 124 is in an arc-shaped configuration, the plurality of processing modules 22 are also arranged in an arc-shaped array to form the arc-shaped detection and collection module 20. The circle center of the circular arc-shaped detection and collection module 20 is the focus of the X-ray source. The web 222 is slightly wider than the detector modules 224. The connection plates 222 are densely arranged, and only the distance required for installation is reserved. The connection board 222 can serve as a barrier to the detector module 224 and the data acquisition module 226. Thus, the airflow introduced by the air intake assembly 30 dissipates heat to the data acquisition module 226, the connecting plates 222 abutting against each other can block the airflow from flowing to one side of the detector module 224, the influence of the airflow on the temperature of the detector module 224 is reduced, and the connecting plates 222 can also electromagnetically shield the detector module 224.
Referring again to fig. 2, the CT detector system 100 further includes a control back plate 40. The control backplane 40 is mounted on the base plate 110. The main function of the control back plate 40 is to collect data in the data acquisition module 226 and control the internal environment of the CT detector system 100.
Referring to fig. 7, the air intake assembly 30 includes a fan 32 and a filter screen 34. A filter screen 34 is positioned between fan 32 and porous portion 1269. The filter screen 34 is an air filter screen, which plays a role of dust prevention, so that the air entering the mounting case 10 contains less dust, and the pollution to the data acquisition module 226 is reduced. When the back plate 124 is in an arc structure, the air inlet assembly 30 and the back plate 124 can be arranged in a concentric arc shape, and at the moment, the distance between each data acquisition module 226 and the air inlet assembly 30 has a smaller difference, so that the temperature consistency is better, and the improvement of the CT image quality is facilitated.
It is understood that the intake assembly 30 may also be located within the mounting cavity. As long as the air intake assembly 30 can introduce air outside the mounting case 10 into the mounting cavity.
In the CT detector system 100, the detector modules 224 are disposed on a side of the connecting plate 222 remote from the data acquisition modules 226, and the connecting plate can electromagnetically shield the detector modules 224. The A/D conversion chip of the data acquisition module 226, the heating electronic devices 227 such as the FPGA and the like are arranged on one side of the data acquisition module 226, which is contacted with the air flow, the air inlet assembly 30 blows air into the installation cavity, the air flow passes through the control back plate 40 and then flows through the surface of the data acquisition module 226 to reach the air outlet plate 1264, and then the air flow flows out from the air outlet 122 on the air outlet plate 1264, so that the heat inside the CT detector system 100 is taken out. In the CT detector system 100, the heating electronic device 227 of the data acquisition module 226 can directly receive the wind blown by the air intake assembly 30 for heat dissipation, and a heat dissipation air duct does not need to be designed, so that the mechanical structure is simple, the occupied space is small, and the manufacturing cost of mechanical parts can be reduced. And the heating electronic device 227 is directly exposed in the air flow, so that the heat dissipation effect is better, the heat dissipation efficiency is high, the phenomenon that the local temperature is too high due to low heat dissipation efficiency caused by the fact that the position of the heating electronic device 227 is hidden and cannot be contacted with the air flow can not be caused, and the service life of the CT detector system 100 is prolonged.
In addition, compare in traditional detector system and need use supplementary radiating part to dispel the heat, the radiating efficiency is lower, the air that the business turn over subassembly 30 of above-mentioned CT detector system 100 introduced can directly blow on control backplate 40 and data acquisition module 226, so the air current can dispel the heat to all inside electron devices 227 that generate heat of CT detector system 100 simultaneously, does not need the heat conduction material, effectively improves the radiating efficiency, can also reduce manufacturing cost.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A CT detector system is characterized by comprising an installation shell, a detection and acquisition module and an air inlet component;
the mounting shell comprises a bottom plate and a top cover, the top cover is covered on the bottom plate, a mounting cavity is formed between the top cover and the bottom plate, and the top cover is provided with an air outlet;
the air inlet assembly is arranged on one side of the top cover and blows air into the mounting shell;
the detection and acquisition module is arranged on the inner wall of the top cover and comprises a plurality of detection and acquisition modules which are closely arranged, each detection and acquisition module comprises a connecting plate, a detector module and a data acquisition module, the detector module and the data acquisition module are respectively fixed on two sides of the connecting plate, and the data acquisition modules and the air inlet assemblies are oppositely arranged;
the top cap is the step form, the top cap includes backplate and step subassembly, the step subassembly includes first flat board, goes out the aerofoil, the second is dull and stereotyped and riser, first flat board the second flat board with the bottom plate is parallel, go out the aerofoil with the backplate is parallel, go out the aerofoil both ends respectively with first flat board with second flat board fixed connection, the riser both ends respectively with the second flat board with bottom plate fixed connection, the air outlet is seted up in on the play aerofoil, it installs with the collection module on the backplate to survey.
2. The CT detector system of claim 1, wherein the back plate is of an arc-shaped configuration and the vent plate is of an arc-shaped configuration.
3. The CT detector system of claim 1, wherein a first airflow space is formed between the bottom plate and the second plate, a second airflow space is formed between the outlet plate and the back plate, and a cross-sectional area of the first airflow space formed between the bottom plate and the second plate is larger than a cross-sectional area of the second airflow space formed between the outlet plate and the back plate.
4. The CT detector system of claim 1, wherein the riser has a porous portion, the porous portion is disposed opposite the back plate, and the air intake assembly is mounted to a side of the porous portion remote from the back plate.
5. The CT detector system of claim 1, wherein the heat-generating electronics on the data acquisition module are each disposed on a side facing the airflow.
6. The CT detector system of claim 1, wherein the connecting plate has a through hole, and the detector module and the data acquisition module are connected by a connector passing through the through hole.
7. The CT detector system of claim 1, wherein the air intake assembly comprises a fan.
8. The CT detector system of claim 7, wherein the intake assembly further comprises a filter screen positioned between the fan and the top cover.
9. The CT detector system of claim 1, wherein the air intake assembly is located outside the top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459599.5A CN105455836B (en) | 2014-09-11 | 2014-09-11 | CT detector system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459599.5A CN105455836B (en) | 2014-09-11 | 2014-09-11 | CT detector system |
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| CN105455836A CN105455836A (en) | 2016-04-06 |
| CN105455836B true CN105455836B (en) | 2020-06-12 |
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| CN201410459599.5A Active CN105455836B (en) | 2014-09-11 | 2014-09-11 | CT detector system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106923857A (en) * | 2017-04-27 | 2017-07-07 | 上海联影医疗科技有限公司 | The detector module and detection instrument of detection instrument |
| CN109152299B (en) * | 2018-09-30 | 2020-07-14 | 上海联影医疗科技有限公司 | Heat radiation structure of detection assembly and detection equipment |
| WO2020064021A1 (en) | 2018-09-30 | 2020-04-02 | Shanghai United Imaging Healthcare Co., Ltd. | Systems for imaging |
| CN111557680A (en) * | 2020-06-01 | 2020-08-21 | 南京安科医疗科技有限公司 | CT detector for head CT system |
| CN113100804B (en) * | 2021-04-21 | 2023-02-03 | 深圳安科高技术股份有限公司 | Heat abstractor and CT machine of CT detector |
| CN116507076B (en) * | 2022-11-29 | 2024-01-05 | 赛诺威盛科技(北京)股份有限公司 | Detector CT guide rail structure and CT scanning equipment |
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| CN102688055A (en) * | 2011-03-23 | 2012-09-26 | Ge医疗系统环球技术有限公司 | Data acquisition system and CT (Computed Tomography) equipment using same |
| CN103126708A (en) * | 2011-11-28 | 2013-06-05 | 西门子公司 | Air cooling detector arrangement and method for cooling the detector arrangement |
| CN105342635A (en) * | 2014-12-12 | 2016-02-24 | 沈阳东软医疗系统有限公司 | Detector system for CT machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006025765A1 (en) * | 2006-05-31 | 2008-03-20 | Siemens Ag | X-ray detector and detector module |
| US9125613B2 (en) * | 2012-06-12 | 2015-09-08 | Mobius Imaging, Llc | Detector system for imaging device |
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2014
- 2014-09-11 CN CN201410459599.5A patent/CN105455836B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688055A (en) * | 2011-03-23 | 2012-09-26 | Ge医疗系统环球技术有限公司 | Data acquisition system and CT (Computed Tomography) equipment using same |
| CN103126708A (en) * | 2011-11-28 | 2013-06-05 | 西门子公司 | Air cooling detector arrangement and method for cooling the detector arrangement |
| CN105342635A (en) * | 2014-12-12 | 2016-02-24 | 沈阳东软医疗系统有限公司 | Detector system for CT machine |
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