Spliced detector, detector module and static CT system

Abstract

The utility model discloses a spliced detector, a detector module and a static CT system. The spliced detector comprises a bracket, wherein the upper surface of the bracket is provided with a main detection area and a scattering detection area; the data acquisition part is arranged on the lower surface of the bracket and is used for acquiring and transmitting digital signals; the main detector is arranged in the main detection area, is connected with the data acquisition part, and is used for converting the main X-ray into a digital signal and transmitting the digital signal to the data acquisition part; the scattering detector is arranged in the scattering detection area, is connected with the data acquisition part and is used for converting the scattering X-rays into digital signals and transmitting the digital signals to the data acquisition part; wherein the brackets and the data acquisition part form a preset angle, so that the plurality of brackets can be mutually spliced into a preset shape. According to the spliced detector, the brackets of a plurality of detectors are spliced with each other through structural innovation, so that the detector module with a preset shape is spliced, and the spliced detector can meet the scanning requirements of different static CT (Computed Tomography) systems.

Description

Technical Field

[0001] The utility model relates to a spliced ​​detector, also relates to a detector module spliced ​​by the spliced ​​detectors, and also relates to a static CT system comprising the spliced ​​detectors, belonging to the technical field of medical devices. Background Art

[0002] Computed tomography (CT) equipment is a widely used three-dimensional imaging device that can be used in medical treatment, security inspection, industrial detection and other fields. Typical CT equipment mainly includes components such as radiation source, detector, rack, mobile carrier of the object to be measured, and image processing and reconstruction system.

[0003] The static CT system has a double-ring structure consisting of a detector array and a ray source array. The ray source array has dozens to hundreds of independent ray sources, and each ray source is exposed in sequence through sequential logic control. Therefore, mechanical rotation is not required when implementing CT scanning. It has systematic advantages such as fast scanning speed, high spatial resolution, high temporal resolution, multi-level energy spectrum, and low dose.

[0004] When the static CT system is working, the X-rays emitted by the ray source penetrate the object being measured. After being attenuated by the object being measured, the X-rays reach the detector, where they are received and imaged. We call the X-rays used to image the object being measured the primary rays. At the same time, scattered rays that have a negative impact on the image are also generated in the CT system. In the image reconstruction process, we hope to remove the scattered rays to obtain a better image effect. As the core component in the static CT system, the design and implementation of the detector has an important impact on the overall performance of the static CT system. However, there is currently no specific implementation plan for the detector module in the static CT system, in order to simultaneously meet the requirements of detector full-ring splicing, heat dissipation design, scattered ray detection, etc. Summary of the invention

[0005] The primary technical problem to be solved by the utility model is to provide a spliced ​​detector.

[0006] Another technical problem to be solved by the present invention is to provide a detector module.

[0007] Another technical problem to be solved by the utility model is to provide a static CT system.

[0008] In order to achieve the above technical objectives, the utility model adopts the following technical solutions:

[0009] According to a first aspect of an embodiment of the present utility model, a spliced ​​detector is provided, comprising:

[0010] A bracket, wherein the upper surface of the bracket has a main detection area and a scattered detection area;

[0011] A data acquisition unit, disposed on the lower surface of the bracket, for collecting and transmitting digital signals;

[0012] A main detector, arranged in the main detection area and connected to the data acquisition unit, for converting the main X-rays into digital signals and transmitting them to the data acquisition unit;

[0013] a scattering detector, disposed in the scattering detection area and connected to the data acquisition unit, for converting scattered X-rays into digital signals and transmitting them to the data acquisition unit;

[0014] Wherein, the bracket and the data acquisition unit are at a preset angle so that a plurality of the brackets can be spliced ​​together into a preset shape.

[0015] Preferably, the main detector comprises:

[0016] A first main rigid circuit board is arranged in the main detection area, and a main detector chip and a scintillator are mounted on the first main rigid circuit board;

[0017] A second main rigid circuit board is disposed on the surface of the data acquisition unit and is electrically connected to the data acquisition unit;

[0018] The main flexible circuit board is connected between the first main rigid circuit board and the second main rigid circuit board for circuit conduction.

[0019] Preferably, the scattering detector comprises:

[0020] A first scattering rigid circuit board is arranged in the scattering detection area, and a scattering detector chip and a scintillator are mounted on the first scattering rigid circuit board;

[0021] A second scattering rigid circuit board is disposed on the surface of the data acquisition unit and is electrically connected to the data acquisition unit;

[0022] The scattering flexible circuit board is connected between the first scattering rigid circuit board and the second scattering rigid circuit board for circuit conduction.

[0023] Preferably, the spliced ​​detector further comprises:

[0024] A heat sink is disposed on the lower surface of the bracket and is used to dissipate heat from the bracket; and the data acquisition unit is located on the lower surface of the bracket and is detachably mounted on one side of the heat sink.

[0025] Preferably, a positioning hole and a connecting hole are provided on the surface of the first main rigid circuit board, a positioning column and a threaded hole are provided in the main detection area of ​​the bracket, the positioning hole corresponds to the positioning column, and the connecting hole corresponds to the threaded hole;

[0026] Among them, the positioning hole and the positioning column are engaged with each other to limit the relative position of the first main rigid circuit board and the bracket; the connecting bolt passes through the connecting hole and is threadedly connected with the threaded hole to connect and fix the main rigid circuit board to the bracket.

[0027] Preferably, a main avoidance groove and a scattering avoidance groove are provided on one side of the bracket close to the data acquisition unit; wherein the main flexible circuit board is located in the main avoidance groove, and the scattering flexible circuit board is located in the scattering avoidance groove.

[0028] Preferably, the data acquisition unit includes:

[0029] substrate;

[0030] A processor, electrically connected to the surface of the substrate, for data processing;

[0031] a main connector, electrically connected to the surface of the substrate, for electrically connecting to the second main rigid circuit board;

[0032] a scattering connector, electrically connected to a surface of the substrate, and used for being electrically connected to the second scattering rigid circuit board;

[0033] The output connector is electrically connected to the surface of the substrate and is used for data output.

[0034] Preferably, the preset shape includes at least a straight line, an arc and a ring.

[0035] According to a second aspect of an embodiment of the utility model, a detector module is provided, comprising a plurality of the above-mentioned spliced ​​detectors, wherein the plurality of the spliced ​​detectors are spliced ​​together into a preset shape.

[0036] According to a third aspect of the embodiment of the utility model, a static CT system is provided, which includes the above-mentioned spliced ​​detector.

[0037] Compared with the prior art, the utility model has the following technical effects:

[0038] 1. Through reasonable structural design, the main detector and the scattered detector can be effectively arranged, and multiple detectors can be spliced ​​in a preset direction to form a complete annular or linear detector module.

[0039] 2. Through circuit design, the data acquisition unit is used to make the main detector and the scattering detector controlled by the same processor, so that the main detector and the scattering detector work synchronously.

[0040] 3. The independently set scattering detector does not occupy the effective area of ​​the main detector, and the working parameters can be set separately from the main detector.

[0041] 4. Each functional unit is separated. When a functional unit fails, it can be replaced independently to reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a spliced ​​detector provided in the first embodiment of the utility model;

[0043] Figure 2 This is a schematic diagram of the structure of the bracket in the first embodiment of the utility model;

[0044] Figure 3 This is a structural diagram of a data acquisition unit in the first embodiment of the utility model;

[0045] Figure 4 This is a schematic diagram of the structure of the main detector in the first embodiment of the utility model;

[0046] Figure 5 This is a schematic diagram of the structure of a scattering detector in the first embodiment of the utility model;

[0047] Figure 6 This is a schematic structural diagram of a heat sink in the first embodiment of the utility model;

[0048] Figure 7 A schematic diagram of a detector module provided in the second embodiment of the utility model;

[0049] Figure 8 A schematic diagram of another detector module provided in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0050] The technical content of the present utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] The embodiment of the utility model aims to adjust the structural form of the detector, and use the bracket and the data acquisition part to form a set angle, so as to form a splicable detector. By splicing the brackets of multiple detectors to each other, a detector module of a preset shape can be spliced ​​to meet the scanning requirements of different static CT systems.

[0052] First embodiment

[0053] like Figure 1As shown, the first embodiment of the utility model provides a spliced ​​detector, including a bracket 1, a data acquisition unit 2, a main detector 3, a scattering detector 4 and a heat sink 5. The upper surface of the bracket 1 has a main detection area 101 and a scattering detection area 102 (refer to Figure 2 As shown), it is used to provide an installation basis for the main detector 3 and the scattered detector 4. The data acquisition unit 2 is arranged on the bracket 1, and is used for collecting and transmitting digital signals; and the data acquisition unit 2 is at a preset angle with the bracket 1 so that multiple brackets can be spliced ​​with each other into a preset shape. The main detector 3 is arranged in the main detection area and connected to the data acquisition unit 2, and is used to convert the main X-rays into digital signals and transmit them to the data acquisition unit 2. The scattered detector 4 is arranged in the scattered detection area and connected to the data acquisition unit 2, and is used to convert the scattered X-rays into digital signals and transmit them to the data acquisition unit 2. The heat sink 5 is arranged on the lower surface of the bracket and is located on one side of the data acquisition unit 2. On the one hand, it is used to dissipate the heat of the bracket 1, and on the other hand, it is used to provide an installation basis for the data acquisition unit 2.

[0054] like Figure 2 As shown, in the above embodiment, the bracket 1 is a rectangular plate-like structure, and the upper surface of the bracket 1 has a main detection area 101 and a scattered detection area 102, and a positioning hole 11 and a connecting hole 12 are opened on the bracket 1. Among them, the positioning hole 11 located in the main detection area 101 is used to position the main detector 3, and the connecting hole 12 located in the main detection area 101 is used to connect and fix the main detector 3 to the bracket 1. Similarly, the positioning hole 11 located in the scattered detection area 102 is used to position the scattered detector 4, and the connecting hole 12 located in the scattered detection area 102 is used to connect and fix the scattered detector 4 to the bracket 1. Therefore, by positioning first and then fixing and connecting, the convenience and stability of the detector installation can be improved.

[0055] like Figure 3As shown, in the above embodiment, the data acquisition unit 2 includes a substrate 21, a processor 22, a main connector 23, a scattering connector 24 and an output connector 25. The substrate 21 is a PCB board with a built-in circuit structure, which is used to provide an installation basis for other electrical components. The processor 22 is electrically connected to the surface of the substrate 21 for data processing. The main connector 23 is electrically connected to the surface of the substrate 21 for electrical connection with the main detector 3. The scattering connector 24 is electrically connected to the surface of the substrate 21 for electrical connection with the scattering detector 4. The output connector 25 is electrically connected to the surface of the substrate 21 for data output. It can be understood that the substrate 21 of the data acquisition unit 2 is arranged on the lower surface of the bracket 1, and the substrate 21 is perpendicular to the lower surface of the bracket 1, so that the bracket 1 and the substrate 21 form an L-shaped structure together. In addition, preferably, the substrate 21 is offset by a preset distance toward the inner side of the lower surface of the bracket 1, so that each electrical component installed on the substrate 21 will not protrude from the outer edge of the bracket 1, so that when multiple brackets 1 are spliced ​​with each other, the data acquisition unit 2 will not cause interference.

[0056] like Figure 4 As shown, in the above embodiment, the main detector 3 includes a first main rigid circuit board 31, a second main rigid circuit board 32 and a main flexible circuit board 33. Among them, the first main rigid circuit board 31 is arranged in the main detection area 101, and the main detector chip and the scintillator 30 are installed on the first main rigid circuit board 31. The second main rigid circuit board 32 is arranged on the surface of the data acquisition unit 2 and is electrically connected to the main connector 23 of the data acquisition unit 2. The main flexible circuit board 33 is connected between the first main rigid circuit board 31 and the second main rigid circuit board 32 for circuit conduction. It can be understood that since the first main rigid circuit board 31 and the second main rigid circuit board 32 are connected through the main flexible circuit board 33, the first main rigid circuit board 31 and the second main rigid circuit board 32 can be respectively arranged on the bracket 1 and the data acquisition unit 2, and the installation position can be freely adjusted as needed to improve the convenience of installing the main detector 3.

[0057] Similar, such as Figure 5 As shown, the scattering detector 4 includes a first scattering rigid circuit board 41, a second scattering rigid circuit board 42 and a scattering flexible circuit board 43. The first scattering rigid circuit board 41 is arranged in the scattering detection area 102, and the scattering detector chip and the scintillator 40 are mounted on the first scattering rigid circuit board 41. The second scattering rigid circuit board 42 is arranged on the surface of the data acquisition unit 2 and is electrically connected to the scattering connector 24 of the data acquisition unit 2. The scattering flexible circuit board 43 is connected between the first scattering rigid circuit board 41 and the second scattering rigid circuit board 42 for circuit conduction.

[0058] In the above embodiment, preferably, a main avoidance groove 103 and a scattering avoidance groove 104 are provided on one side of the bracket 1 close to the data acquisition unit 2. The main flexible circuit board 33 is located in the main avoidance groove 103, and the scattering flexible circuit board 43 is located in the scattering avoidance groove 104, so as to avoid interference with the splicing of the bracket 1, and to reduce the bending degree of the flexible circuit board to a certain extent, thereby improving the safety of use.

[0059] like Figure 6 As shown, in the above embodiment, the heat sink 5 is a heat sink, which is arranged on the lower surface of the bracket 1 and is located on one side of the data acquisition unit 2, and is used to dissipate heat from the bracket 1. In addition, the substrate 21 of the data acquisition unit 2 can be detachably mounted on one side of the heat sink 5, so that the heat sink 5 can be used to dissipate heat to the substrate 21 to a certain extent, thereby ensuring the working efficiency of the data acquisition unit 2. Specifically, the heat sink 5 is made of metal, and the top end is in close contact with the lower surface of the bracket 1, and two fixing holes 51 are provided on the top, which are used to connect and fix with the bracket 1, so as to dissipate the heat conducted by the bracket 1. In addition, a groove 52 is provided on the heat sink 5 to increase the heat dissipation area and improve the heat dissipation effect.

[0060] Second embodiment

[0061] On the basis of the above first embodiment, the second embodiment of the present invention provides a detector module. The spliced ​​detector module is composed of a plurality of the above spliced ​​detectors 10 spliced ​​together into a preset shape.

[0062] Specifically, Figure 7 and Figure 8 As shown, in this embodiment, a plurality of the above-mentioned spliced ​​detectors 10 can be spliced ​​into a straight line, an arc or a ring, and can be adaptively adjusted according to the scanning requirements of the static CT system.

[0063] Third embodiment

[0064] On the basis of the above-mentioned first embodiment, the third embodiment of the utility model further provides a static CT system. The static CT system includes the above-mentioned spliced ​​detector, and may also include other structures, such as: a controller, a ray source, a beam limiter, and an image processing unit, etc. The controller can control the entire CT scanning process, for example, using the ray source to emit X-rays, using the beam limiter to limit the X-rays to adjust the emission range of the X-rays, and using the image processing unit to perform image processing on the CT image detected on the detector, and then output a CT scanning report. It can be understood that the static CT system can make adaptive structural selections according to actual CT scanning requirements to adapt to different CT scanning scenarios.

[0065] It should be noted that the above-mentioned multiple embodiments are only examples, and the technical solutions of the various embodiments can be combined, all of which are within the protection scope of the present utility model.

[0066] It should be understood that the terms "upper", "lower", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] The above is a detailed description of the spliced ​​detector, detector module and static CT system provided by the utility model. For those skilled in the art, any obvious changes made to the utility model without departing from the essence of the utility model will constitute an infringement of the patent right of the utility model and will bear the corresponding legal liability.

Claims

1. A spliced ​​detector, characterized in that include: A bracket, wherein the upper surface of the bracket has a main detection area and a scattered detection area; A data acquisition unit, disposed on the lower surface of the bracket, for collecting and transmitting digital signals; A main detector, arranged in the main detection area and connected to the data acquisition unit, for converting the main X-rays into digital signals and transmitting them to the data acquisition unit; a scattering detector, disposed in the scattering detection area and connected to the data acquisition unit, for converting scattered X-rays into digital signals and transmitting them to the data acquisition unit; Wherein, the bracket and the data acquisition unit are at a preset angle so that a plurality of the brackets can be spliced ​​together into a preset shape.

2. The spliced ​​detector according to claim 1, characterized in that The main detector comprises: A first main rigid circuit board is arranged in the main detection area, and a main detector chip and a scintillator are mounted on the first main rigid circuit board; A second main rigid circuit board is disposed on the surface of the data acquisition unit and is electrically connected to the data acquisition unit; The main flexible circuit board is connected between the first main rigid circuit board and the second main rigid circuit board for circuit conduction.

3. The spliced ​​detector according to claim 2, characterized in that The scatter detector comprises: A first scattering rigid circuit board is arranged in the scattering detection area, and a scattering detector chip and a scintillator are mounted on the first scattering rigid circuit board; A second scattering rigid circuit board is disposed on the surface of the data acquisition unit and is electrically connected to the data acquisition unit; The scattering flexible circuit board is connected between the first scattering rigid circuit board and the second scattering rigid circuit board for circuit conduction.

4. The spliced ​​detector according to claim 1, characterized in that Also includes: A heat sink is disposed on the lower surface of the bracket and is used to dissipate heat from the bracket; and the data acquisition unit is located on the lower surface of the bracket and is detachably mounted on one side of the heat sink.

5. The spliced ​​detector according to claim 2, characterized in that: A positioning hole and a connecting hole are provided on the surface of the first main rigid circuit board, a positioning column and a threaded hole are provided in the main detection area of ​​the bracket, the positioning hole corresponds to the positioning column, and the connecting hole corresponds to the threaded hole; Among them, the positioning hole and the positioning column are engaged with each other to limit the relative position of the first main rigid circuit board and the bracket; the connecting bolt passes through the connecting hole and is threadedly connected with the threaded hole to connect and fix the main rigid circuit board to the bracket.

6. The spliced ​​detector according to claim 3, characterized in that: A main avoidance groove and a scattering avoidance groove are provided on one side of the bracket close to the data acquisition unit; wherein the main flexible circuit board is located in the main avoidance groove, and the scattering flexible circuit board is located in the scattering avoidance groove.

7. The spliced ​​detector according to claim 3, characterized in that The data collection unit comprises: substrate; A processor, electrically connected to the surface of the substrate, for data processing; a main connector, electrically connected to the surface of the substrate, for electrically connecting to the second main rigid circuit board; a scattering connector, electrically connected to a surface of the substrate, and used for being electrically connected to the second scattering rigid circuit board; The output connector is electrically connected to the surface of the substrate and is used for data output.

8. The spliced ​​detector according to claim 1, characterized in that The preset shapes include at least: a straight line, an arc, and a ring.

9. A detector module, characterized in that It comprises a plurality of spliced ​​detectors as described in any one of claims 1 to 8, wherein the plurality of spliced ​​detectors are spliced ​​together into a preset shape.

10. A static CT system, characterized in that This includes a spliced ​​detector as described in any one of claims 1 to 8.

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