Detector arrangement and medical imaging apparatus

Abstract

The application discloses a kind of detector device and medical image equipment, it is related to medical image equipment technical field, make the simple structure of detector, to reduce cost, while guarantee the consistency of adjacent detector module instantaneous voltage, to ensure the normal work of detector.The main technical scheme of the present application is: the detector device includes power supply board, the power supply board includes conductive layer, the conductive layer is used to be electrically connected with high voltage device;Multiple array arrangement detector module, multiple the detector module is electrically connected with the conductive layer respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical imaging equipment, in particular to a detector device and medical imaging equipment. BACKGROUND

[0002] The counting detector of photon technology computed tomography (CT) utilizes direct conversion sensor materials, such as CZT (Cadmium Zinc Telluride), cadmium iodide or deep silicon, which need to be under a high-voltage electric field to guide and amplify the electric charge generated by X-ray impacting the sensor materials.

[0003] In order to provide a high-voltage electric field, a high-voltage power supply circuit needs to be arranged inside the detector. At present, the way to arrange the high-voltage power supply circuit is to set a high-voltage power supply substrate for each detector sub-module, and arrange structures such as cables or connectors. The structure is complex, the cost is high, and there is a problem of inconsistency of transient voltage of adjacent detector modules, thereby affecting the normal work of the detector. SUMMARY

[0004] Therefore, the embodiments of the present application provide a detector device and medical imaging equipment, the main purpose of which is to make the structure of the detector simple, so as to reduce the cost, and at the same time ensure the consistency of the transient voltage of adjacent detector modules, thereby ensuring the normal work of the detector.

[0005] In order to achieve the above-mentioned purpose, the present application mainly provides the following technical solutions:

[0006] In one aspect, the embodiments of the present application provide a detector device, comprising:

[0007] A power supply plate, the power supply plate comprises a conductive layer, and the conductive layer is used for electrically connecting with a high-voltage device;

[0008] A plurality of array-arranged detector modules, and the plurality of detector modules are respectively electrically connected with the conductive layer.

[0009] Further, the power supply plate further comprises a first elastic electrode layer, the first elastic electrode layer is stacked and electrically connected with the conductive layer;

[0010] The plurality of detector modules are respectively electrically connected with the conductive layer through the first elastic electrode layer.

[0011] Further, the detector device further comprises:

[0012] A plurality of array-arranged gratings, and the plurality of gratings are respectively electrically connected on surfaces of the plurality of detector modules for receiving X-rays;

[0013] The power supply plate is arranged on the side of the plurality of gratings, the first elastic electrode layer is pressed between the plurality of gratings and the conductive layer, the gratings are conductive gratings, and the first elastic electrode layer is electrically connected to the plurality of detector modules through the plurality of gratings.

[0014] Further, the detector device further comprises:

[0015] A second elastic electrode layer is pressed between the plurality of gratings and the plurality of detector modules, and the plurality of gratings are correspondingly electrically connected to the plurality of detector modules through the second elastic electrode layer.

[0016] Further, the power supply plate further comprises an insulating layer arranged on the side of the conductive layer opposite to the first elastic electrode layer.

[0017] The detector device further comprises a housing, and the side of the insulating layer away from the conductive layer is connected to the housing.

[0018] Further, the detector device further comprises:

[0019] A plurality of arrayed gratings are arranged on the side of the plurality of detector modules for receiving X-rays.

[0020] The power supply plate is arranged between the plurality of gratings and the plurality of detector modules, and the first elastic electrode layer is pressed between the plurality of detector modules and the conductive layer.

[0021] Further, the power supply plate further comprises an insulating layer arranged on the side of the conductive layer opposite to the first elastic electrode layer, and the detector device further comprises a housing.

[0022] The plurality of gratings are connected to the housing, and the first elastic electrode layer is pressed between the plurality of detector modules and the conductive layer at least through the plurality of gratings, or the insulating layer is connected to the housing, and the first elastic electrode layer is pressed between the plurality of detector modules and the conductive layer at least through the insulating layer.

[0023] Further, the detector device further comprises:

[0024] A support is arranged on the support, and the plurality of gratings and the plurality of detector modules are arranged in the mounting space.

[0025] The power supply plate is inserted into the mounting space, and the first elastic electrode is opposite to the plurality of detector modules.

[0026] A pressing mechanism is arranged on the support and used to press the power supply plate on the plurality of detector modules.

[0027] Further, the pressing mechanism comprises a pressing plate and at least two fasteners, the pressing plate is arranged in the mounting space, and the power supply plate is located between the pressing plate and the detector modules.

[0028] At least one of the fasteners is connected to one end of the support and the pressing plate, and at least another fastener is connected to another end of the support and the pressing plate.

[0029] In another aspect, the embodiment of the present application provides a medical imaging device comprising the above detector device.

[0030] By means of the above technical solution, the present application has at least the following beneficial effects:

[0031] The technical solution provided by the embodiment of the present application realizes that the power supply plate supplies high-voltage electric field to all the detector modules at the same time, without the need to separately arrange a high-voltage power supply substrate for each detector module, so that the structure of the detector is simpler, space is saved, and cost is reduced; and the instantaneous voltage of adjacent detector modules can be kept consistent, thereby ensuring the normal work of the detector. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 FIG. 1 is a structural schematic diagram of a detector device provided by an embodiment of the present application;

[0033] Figure 2 FIG. 2 is a structural schematic diagram of another detector device provided by an embodiment of the present application;

[0034] Figure 3 FIG. 3 is a structural schematic diagram of still another detector device provided by an embodiment of the present application in a first perspective view;

[0035] Figure 4 FIG. 4 is a structural schematic diagram of still another detector device provided by an embodiment of the present application in a second perspective view. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings of the preferred embodiments of the present application to make the technical solutions in the embodiments of the present application more detailed. In the drawings, the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0037] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the scope of protection of the present embodiment.

[0038] As shown in Figure 1 , Figure 2 and Figure 3 , the present embodiment provides a detector device, which comprises a power supply plate 1, the power supply plate 1 comprising a conductive layer 11 for electrical connection with a high-voltage device; a plurality of arrayed detector modules 2, the plurality of detector modules 2 being respectively electrically connected with the conductive layer 11, where the electrical connection can be direct connection or indirect connection, as long as the conductive layer 11 can simultaneously provide high voltage for the plurality of detector modules 2. Specifically, each detector module 2 can comprise a sensor layer, and the sensor layers of the plurality of detector modules 2 are respectively electrically connected with the conductive layer 11.

[0039] It should be noted that the conductive layer 11 of the power supply plate 1 can have various structural forms, as long as it can simultaneously supply high-voltage electric field of the high-voltage device to the plurality of detector modules 2, for example, the conductive layer 11 can be a metal plate, specifically a metal plate with high conductivity coefficient such as copper or aluminum, or the conductive layer 11 can be a metal laminated film, or the conductive layer 11 can be formed by metal sputtering on a substrate. The thickness of the conductive layer can be 0.5 to 3 mm, for example, 1 mm, 2 mm or 2.5 mm.

[0040] The detector device provided by the embodiment of the present application, by arranging the power supply plate 1, the power supply plate 1 comprises a conductive layer 11 for electrically connecting with the high-voltage device, and the conductive layer 11 is electrically connected with all the detector modules 2, so that the power supply plate 1 simultaneously supplies the high-voltage electric field for all the detector modules 2, without the need to separately arrange a high-voltage power supply substrate for each detector sub-module, the structure of the detector is simpler, space is saved, and the cost is reduced; and the instantaneous voltages of the adjacent detector modules 2 can be kept consistent, so that the normal work of the detector is ensured.

[0041] Since the conductive layer 11 and the detector module 2 are both rigid parts, the electrical connection therebetween is prone to be unreliable, in order to solve this technical problem, in an optional embodiment, referring to Figure 1 、 Figure 2 and Figure 3 The power supply plate 1 further comprises a first elastic electrode layer 12, the first elastic electrode layer 12 is arranged in a stack with the conductive layer 11 and is electrically connected with the conductive layer 11; the detector modules 2 of the plurality of detector modules 2 are respectively electrically connected with the conductive layer 11 through the first elastic electrode layer 12.

[0042] In the above embodiment, since the first elastic electrode layer 12 has a certain elasticity, it can be compressed, so that the detector module 2 can compress the first elastic electrode layer 12, thereby ensuring the reliable electrical connection between the detector module 2 and the first elastic electrode layer 12, and further ensuring the reliability of the electrical connection between the detector module 2 and the conductive layer 11.

[0043] In the above embodiment, the structure of the first elastic electrode layer 12 can be various, as long as it can conduct electricity and be compressed, for example, the first elastic electrode layer 12 can be composed of an arch bridge type metal sheet, or can be made of conductive foam with high conductivity.

[0044] In an optional embodiment, referring to Figure 1 The detector device can further comprise a plurality of array-arranged gratings 3, the gratings 3 are anti-scattering gratings, can be made of tungsten and its alloy, or molybdenum and its alloy, that is, the gratings 3 are conductive gratings, for absorbing scattered X-rays, to avoid interference with the sensor of the detector, and reduce noise, the plurality of gratings 3 are correspondingly electrically connected on the surfaces of the plurality of detector modules 2 for receiving X-rays, and the electrical connection here can be direct electrical connection; the power supply plate 1 is arranged at the side of the plurality of gratings 3, the first elastic electrode layer 12 is compressed between the plurality of gratings 3 and the conductive layer 11, and the first elastic electrode layer 12 is electrically connected with the plurality of detector modules 2 through the plurality of gratings 3.

[0045] In the above embodiment, the detector module 2 is electrically connected with the grating 3, and the grating 3 is pressed against and electrically connected with the first elastic electrode layer 12, so that the detector module 2 is conducted with the power supply plate 1 through the grating 3, and then the power supply plate 1 provides the electric field of the bias voltage for the detector module 2 through the grating 3. In the embodiment, the grating 3 arranged on the side of the detector module 2 for receiving X-rays is used to conduct the power supply plate 1 and the detector module 2, without using additional conductive parts, so that the structure is simple and the use is reliable.

[0046] Of course, the first elastic electrode layer 12 of the power supply plate 1 can also not be electrically connected with the grating 3, that is, the power supply plate 1 is not conducted with the detector module 2 through the grating 3, but is electrically connected with the surface of the detector module 2 for receiving X-rays through other additional conductive parts, to realize the conduction between the power supply plate 1 and the detector module 2. The specific implementation can be selected according to actual needs.

[0047] In order to ensure the reliability of the electrical connection between the grating 3 and the detector module 2, in an optional embodiment, referring to Figure 1 , the detector device further comprises a second elastic electrode layer 4, which is pressed between the plurality of gratings 3 and the plurality of detector modules 2, and the plurality of gratings 3 are electrically connected with the plurality of detector modules 2 through the second elastic electrode layer 4, that is, the plurality of gratings 3 are indirectly electrically connected with the plurality of detector modules 2.

[0048] In the above embodiment, since the second elastic electrode layer 4 has a certain elasticity, it can be compressed, so that the detector module 2 can compress the second elastic electrode layer 4 to ensure the reliable electrical connection between the detector module 2 and the second elastic electrode layer 4, thereby ensuring the reliability of the electrical connection between the detector module 2 and the grating 3, and further ensuring the reliability of the electrical connection between the power supply plate 1 and the detector module 2.

[0049] In the above embodiment, the structure of the second elastic electrode layer 4 can have various forms, as long as it can conduct electricity and be compressed, for example, the second elastic electrode layer 4 can be composed of an arch bridge type metal sheet, or can be made of conductive foam with high conductivity.

[0050] In an optional embodiment, referring to Figure 1 , the power supply plate 1 further comprises an insulating layer 13, which is arranged on the side of the conductive layer 11 away from the first elastic electrode layer 12; and the detector device further comprises a housing 6, and the side of the insulating layer 13 away from the conductive layer 11 is connected with the housing 6.

[0051] In the above embodiment, the insulating layer 13 can be a black insulating film, so that the power supply plate 1 is connected to the shell 6 through the black insulating film, so that the shell 6 is isolated from the high voltage through the insulating layer 13; or, since the insulating layer 13 is usually thin, the insulating layer 13 is easily damaged when the power supply plate 1 is disassembled, therefore, the insulating fixing plate 5 can be provided, the insulating fixing plate 5 can be first fixed on the shell 6, and then the power supply plate 1 is fixed on the insulating fixing plate 5, so that the shell 6 is isolated from the conductive layer through the insulating fixing plate 5 and the insulating layer 13, so that the insulating fixing plate 5 can be disassembled together when the power supply plate 1 is disassembled, avoiding damage to the insulating layer 13; or, the power supply plate 1 can not be provided with the insulating layer 13, that is, the shell 6 is connected to the power supply plate 1 only through the insulating fixing plate 5, and the isolation of the shell 6 from the high voltage can also be achieved, and the specific implementation can be selected according to the actual needs.

[0052] In an alternative embodiment, referring to Figure 2 and Figure 3 The detector device further comprises a plurality of arrayed gratings 3, the plurality of gratings 3 are correspondingly arranged on the side of the plurality of detector modules 2 for receiving X-rays; the power supply plate 1 is arranged between the plurality of gratings 3 and the plurality of detector modules 2, and the first elastic electrode layer 12 is pressed between the plurality of detector modules 2 and the conductive layer 11.

[0053] In the above embodiment, the power supply plate 1 is arranged between the grating 3 and the detector module 2, and the detector module 2 is pressed against the first elastic electrode layer 12, which can also achieve the purpose of the power supply plate 1 providing the electric field of the bias voltage for the detector module 2, and the structure is simple and reliable.

[0054] In an alternative embodiment, referring to Figure 2 The power supply plate 1 can further comprise an insulating layer 13, the insulating layer is arranged on the surface of the conductive layer 11 away from the first elastic electrode layer 12; the detector device further comprises a shell 6, the plurality of gratings 3 are connected to the shell 6, and the first elastic electrode layer 12 is pressed between the plurality of detector modules 2 and the conductive layer 11 at least through the plurality of gratings 3, or the insulating layer 13 is connected to the shell 6, and the first elastic electrode layer 12 is pressed between the plurality of detector modules 2 and the conductive layer 11 at least through the insulating layer 13.

[0055] According to the above embodiment, when installing the detector device, the grating 3 can be first installed on the shell 6, then the power supply plate 1 is installed on the grating 3, and finally the detector module 2 is tightly installed on the power supply plate 1, so as to ensure the reliability of the electrical connection between the first elastic electrode layer 12 and the detector module 2, or the detector module 2 is first installed, then the power supply plate 1 is installed, and finally the grating 3 is installed on the shell 6, and after the above process, the grating 3 is pressed on the power supply plate 1. This implementation is suitable for the case that the grating 3 and the detector module 2 are installed on the shell 6 respectively.

[0056] In an optional embodiment, referring to Figure 3 and Figure 4 The detector device can further include a bracket 7, a plurality of gratings 3 and a plurality of detector modules 2 are arranged on the bracket 7, and an installation space 71 is arranged between the plurality of gratings 3 and the plurality of detector modules 2; the power supply plate 1 is inserted into the installation space 71, and the first elastic electrode layer 12 is opposite to the plurality of detector modules 2; and a pressing mechanism 8 is arranged on the bracket 7 and used for tightly pressing the power supply plate 1 on the plurality of sensors.

[0057] In the above embodiment, the installation space 71 is arranged between the plurality of gratings 3 and the plurality of detector modules 2, the power supply plate 1 can be finally inserted and installed in the installation space 71, and then the power supply plate 1 is tightly pressed on the plurality of detector modules 2 by the pressing mechanism 8, so as to realize the reliable electrical connection between the plurality of detector modules 2 and the power supply plate 1, so that the power supply plate 1 provides the electric field of the bias voltage for the detector module 2, and the structure is simple and reliable. Moreover, since the power supply plate 1 is installed in the installation space 71, this implementation can realize the separate disassembly of the power supply plate 1, and the maintenance is convenient.

[0058] It should be noted that when installing the plurality of gratings 3 and the plurality of detector modules 2, the grating 3 can be first installed on the bracket 7, and then the plurality of detector modules 2 is installed on the bracket 7, that is, when installing the plurality of detector modules 2, the plurality of gratings 3 has been fixed on the bracket 7, so that the relative position between the crystals of the grating 3 and the detector module 2 is easy to adjust and measure, thereby ensuring the installation precision between the grating 3 and the detector module 2. The above implementation is suitable for the case that the grating 3 and the detector module 2 are first adjusted and assembled, and then jointly installed on the detector shell 6.

[0059] Specifically, the bracket 7 can include a bracket body 72 and a connecting piece 73, the optical grating 3 can be connected to the connecting piece 73, the connecting piece 73 is connected to the bracket body 72, the bracket body 72 can be provided with a mounting groove, the detector module 2 can be arranged in the mounting groove, in an example, the connecting piece 73 is an angle piece; at the same time, in order to facilitate the installation of the power supply board 1, a guide inclined surface can be arranged on the bracket body at a position corresponding to the mounting space 71, the guide inclined surface is arranged in a direction from the detector module 2 to the optical grating 3, similar to a bank card slot of an automatic teller machine, so that the power supply board 1 can be smoothly inserted into the mounting space 71 under the guidance of the guide inclined surface, thereby making the installation of the power supply board 1 more convenient and fast.

[0060] In an optional embodiment, the pressing mechanism 8 can include a plurality of, for pressing the power supply board 1 on the plurality of detector modules 2, so that the individual pressing of each detector module 2 can be realized, thereby ensuring the reliable electrical connection between the detector modules 2 and the power supply board 1.

[0061] Among them, the structure of the pressing mechanism 8 can have many forms, as long as it can realize the pressing of the power supply board 1 on the plurality of detector modules 2, in an optional embodiment, referring to Figure 3 and Figure 4 , the pressing mechanism 8 can include a pressing plate 81 and at least two fasteners 82, the pressing plate 81 is arranged in the mounting space 71, and both ends of the pressing plate 81 are exposed outside the mounting space 71, the power supply board 1 is located between the pressing plate 81 and the detector module 2; at least one fastener 82 is connected to one end of the bracket 7 and the pressing plate 81, and at least another fastener 82 is connected to the other end of the bracket 7 and the pressing plate 81. Specifically, the bracket 7 and the pressing plate 81 can be made of insulating material.

[0062] In the above embodiment, the fastener 82 can be a bolt, the power supply board 1 is located between the pressing plate 81 and the plurality of detector modules 2, when the bolt is fastened, the bolt can pull the pressing plate 81, thereby pressing the power supply board 1 on the detector module 2, thereby realizing the reliable electrical connection between the power supply board 1 and the detector module 2, the structure is simple and convenient to realize.

[0063] In order to further improve the reliability of the electrical connection between the power supply board 1 and the detector module 2, in an optional embodiment, referring to Figure 3 and Figure 4 , the pressing plate 81 can include a pressing plate body and an elastic layer attached to one side of the pressing plate body facing the power supply board 1, the pressing plate body is pressed to the power supply board 1 through the elastic layer.

[0064] In the above embodiment, by arranging the elastic layer, the pressing plate body is pressed to the power supply board 1 through the elastic layer, which can increase the pressing force of the pressing plate 81 on the power supply board 1, thereby further improving the reliability of the electrical connection between the power supply board 1 and the detector module 2.

[0065] In the above embodiment, the elastic layer can be a whole structure, and the thickness of the two end portions can be greater than the thickness of the middle portion, and the distance between the two thicker portions can be adapted to the length of the power supply plate 1, so that when the fastening bolt is tightened, the power supply plate 1 can be completely wrapped and pressed in the elastic layer, ensuring the reliability of the electrical connection between the power supply plate 1 and the detector module 2. Alternatively, referring to Figure 3 and Figure 4 , the elastic layer can be a split structure, which can include a first elastic layer 83 and two second elastic layers 84 located at the two ends of the first elastic layer 83 respectively, and the pressing plate body can be in the shape of a U or the thickness of the second elastic layer 84 is greater than the thickness of the first elastic layer 83, and the distance between the two second elastic layers 84 is adapted to the length of the power supply plate 1, so that when the fastening bolt is tightened, the power supply plate 1 can be completely wrapped and pressed in the elastic layer, ensuring the reliability of the electrical connection between the power supply plate 1 and the detector module 2.

[0066] The embodiment of the present application also provides a medical imaging device, which comprises the above-mentioned detector device.

[0067] The medical imaging device provided by the embodiment of the present application comprises the detector device, the detector device is provided with the power supply plate 1, the power supply plate 1 comprises the conductive layer 11 for electrical connection with the high-voltage device, and the conductive layer 11 is electrically connected with all the detector modules 2, so that the power supply plate 1 simultaneously supplies a high-voltage electric field to all the detector modules 2, without the need to separately provide a high-voltage power supply substrate for each detector module, the structure of the detector is simpler, space is saved, and cost is reduced; and the instantaneous voltages of adjacent detector modules 2 can be kept consistent, so that the normal work of the detector is ensured.

[0068] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A detector device, characterized in that The application relates to a detector device. The power supply plate comprises a conductive layer for electrically connecting with a high-voltage device; a plurality of arrayed detector modules, each of which is electrically connected with the conductive layer; the power supply plate further comprises a first elastic electrode layer which is stacked with the conductive layer and is electrically connected with the conductive layer; each of the plurality of arrayed detector modules is electrically connected with the conductive layer through the first elastic electrode layer; the detector device further comprises: a plurality of arrayed gratings, each of which is electrically connected with a surface of each of the plurality of arrayed detector modules for receiving X-rays; the power supply plate is arranged on a side of the plurality of arrayed gratings, the first elastic electrode layer is compressed between the plurality of arrayed gratings and the conductive layer, the gratings are conductive gratings, and the first elastic electrode layer is electrically connected with the plurality of arrayed detector modules through the plurality of arrayed gratings; the detector device further comprises: a second elastic electrode layer which is compressed between the plurality of arrayed gratings and the plurality of arrayed detector modules, and each of the plurality of arrayed gratings is electrically connected with each of the plurality of arrayed detector modules through the second elastic electrode layer.

2. The detector device according to claim 1, wherein the power supply plate further comprises an insulating layer which is arranged on a surface of the conductive layer which is opposite to the first elastic electrode layer; the detector device further comprises a housing; a side of the insulating layer which is away from the conductive layer is connected with the housing.

3. A detector device, characterized in that The application relates to a detector device. The power supply plate comprises a conductive layer for electrically connecting with a high-voltage device; a plurality of arrayed detector modules, each of which is electrically connected with the conductive layer; the power supply plate further comprises a first elastic electrode layer which is stacked with the conductive layer and is electrically connected with the conductive layer; each of the plurality of arrayed detector modules is electrically connected with the conductive layer through the first elastic electrode layer; a plurality of arrayed gratings, each of which is arranged on a side of each of the plurality of arrayed detector modules for receiving X-rays; the power supply plate is arranged between the plurality of arrayed gratings and the plurality of arrayed detector modules, and the first elastic electrode layer is compressed between the plurality of arrayed detector modules and the conductive layer; the detector device further comprises: a support, the plurality of arrayed gratings and the plurality of arrayed detector modules are arranged on the support, and a mounting space is arranged between the plurality of arrayed gratings and the plurality of arrayed detector modules; the power supply plate is inserted into the mounting space, and the first elastic electrode layer is opposite to the plurality of arrayed detector modules; a compression mechanism which is arranged on the support and is used for compressing the power supply plate on the plurality of arrayed detector modules; the compression mechanism comprises a pressing plate and at least two fasteners, the pressing plate is arranged in the mounting space, and the power supply plate is located between the pressing plate and the arrayed detector modules; one end of each of the at least two fasteners is connected with the support and the pressing plate, and the other end of each of the at least two fasteners is connected with the support and the pressing plate.

4. A medical imaging apparatus, characterized by comprising: The application relates to a detector device. The power supply plate comprises a conductive layer for electrically connecting with a high-voltage device; a plurality of arrayed detector modules, each of which is electrically connected with the conductive layer; the power supply plate further comprises a first elastic electrode layer which is stacked with the conductive layer and is electrically connected with the conductive layer; each of the plurality of arrayed detector modules is electrically connected with the conductive layer through the first elastic electrode layer; a plurality of arrayed gratings, each of which is arranged on a side of each of the plurality of arrayed detector modules for receiving X-rays; the power supply plate is arranged between the plurality of arrayed gratings and the plurality of arrayed detector modules, and the first elastic electrode layer is compressed between the plurality of arrayed detector modules and the conductive layer; the detector device further comprises: a support, the plurality of arrayed gratings and the plurality of arrayed detector modules are arranged on the support, and a mounting space is arranged between the plurality of arrayed gratings and the plurality of arrayed detector modules; the power supply plate is inserted into the mounting space, and the first elastic electrode layer is opposite to the plurality of arrayed detector modules; a compression mechanism which is arranged on the support and is used for compressing the power supply plate on the plurality of arrayed detector modules; the compression mechanism comprises a pressing plate and at least two fasteners, the pressing plate is arranged in the mounting space, and the power supply plate is located between the pressing plate and the arrayed detector modules; one end of each of the at least two fasteners is connected with the support and the pressing plate, and the other end of each of the at least two fasteners is connected with the support and the pressing plate.

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