Detector and medical imaging apparatus

Abstract

The invention discloses a detector and medical imaging equipment. The detector comprises a plurality of detector modules, a shell and a fan, and the detector modules are arranged in the X direction; the shell comprises a second shell and a first shell which are oppositely arranged in the Z direction, the multiple detector modules are all installed between the second shell and the first shell and matched with the shell to form an airflow cavity, the airflow cavity is provided with a heat dissipation air inlet and a heat dissipation air outlet, and the heat dissipation air inlet is formed in the first shell; the fan is arranged in the airflow cavity and located on the side, away from the sub-module, of the module support in the Y direction. The heat dissipation air inlets face the second shell and are arranged at intervals. Or, the heat dissipation air inlet is arranged back to the detector module in the Y direction. The fan is arranged in the Y direction of the detector module, so that the Z-direction size of the detector can be reduced, the size of the detector can be reduced, and the arrangement of the detector is facilitated. And the arrangement mode can improve the air inlet smoothness of the fan, so that the heat dissipation speed of the detector module can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a detector and medical imaging equipment. Background Art

[0002] The heat dissipation of a CT (Computed Tomography) machine is very important to ensure the detection quality of the CT machine.

[0003] In the prior art, CT scanners typically use axial-flow fans to dissipate heat from the detector. These fans draw cool air from the front hood of the device and pass it through air ducts on the detector modules, actively dissipating the heat. This results in a relatively large Z-dimensional dimension for the detector, making it difficult to position and increasing the overall Z-dimensional dimension of the CT scanner. Furthermore, the fan's air inlet is located close to the back of the gantry's front hood, hindering air flow. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a detector having a reduced Z-axis dimension, which facilitates its layout. Furthermore, the detector's fan inlet is less obstructed, thereby improving the fan's air intake smoothness and efficiency, thereby increasing the speed of heat dissipation from the detector module.

[0005] The present invention also provides a medical imaging device having the detector.

[0006] According to an embodiment of the first aspect of the present invention, the detector includes: a plurality of detector modules, the plurality of detector modules are arranged along the X direction, each of the detector modules includes a module bracket and a plurality of sub-modules arranged on the module bracket, the module bracket extends along the Z direction, and the plurality of sub-modules are arranged in sequence along the Z direction; a shell, the shell includes a second shell and a first shell arranged opposite to each other along the Z direction, the plurality of detector modules are installed between the second shell and the first shell, and cooperate with the shell to form an air flow cavity, the air flow cavity has a heat dissipation inlet and a heat dissipation outlet, and the heat dissipation inlet is formed on the first shell; a fan, the fan is arranged in the air flow cavity, and is located on the side of the module bracket away from the sub-module in the Y direction; wherein the heat dissipation inlet faces the second shell and is spaced apart from the second shell; or, the heat dissipation inlet is arranged away from the detector module in the Y direction.

[0007] According to the detector embodiment of the present invention, by positioning the fan in the Y direction of the detector module, the detector's Z-direction dimensions can be reduced, improving space utilization and thus reducing the detector's volume, facilitating its layout. Furthermore, this arrangement avoids obstruction of the fan's air inlet, increasing the air intake space available to the fan, improving the fan's air intake smoothness and efficiency, and thus increasing the speed of heat dissipation from the detector module.

[0008] In some embodiments, the airflow cavity includes a first cavity and a second cavity, the first cavity extends along the Z direction, the heat dissipation outlet is formed at one end of the first cavity in the Z direction, the second cavity is bent and connected to the other end of the first cavity in the Z direction, or the second cavity is arranged adjacent to the other end of the first cavity in the Z direction, a plurality of the detector modules are arranged corresponding to the first cavity, the second cavity is located on the side of the module bracket away from the sub-module in the Y direction, the fan is arranged in the second cavity, and the heat dissipation inlet is formed in the second cavity.

[0009] In some embodiments, the fan is a centrifugal fan, and the heat dissipation air inlet is arranged toward the second shell.

[0010] In some embodiments, the second cavity and an end of the module bracket in the Z direction away from the heat dissipation outlet are arranged opposite to each other in the Y direction.

[0011] In some embodiments, the heat dissipation outlet is formed on a side of the second shell facing away from the first shell.

[0012] In some embodiments, there are multiple fans and the fans are arranged sequentially along the X direction.

[0013] In some embodiments, the airflow cavity includes a heat dissipation duct located within the module bracket, the heat dissipation duct extending along the Z direction, the heat dissipation duct passing through one end of the module bracket away from the heat dissipation air inlet in the Z direction, and passing through one end of the module bracket adjacent to the heat dissipation air inlet in the Z direction to form a first airflow inlet.

[0014] In some embodiments, the heat dissipation duct passes through one end of the module bracket facing away from the submodule in the Y direction to form a second air flow inlet, and the second air flow inlet is arranged adjacent to the heat dissipation air inlet.

[0015] In some embodiments, there are multiple second air flow inlets, and the multiple second air flow inlets are arranged at intervals along the Z direction and / or the X direction. The second air flow inlet and the heat dissipation air inlet are arranged opposite to each other in the Y direction.

[0016] According to the second aspect of the present invention, the medical imaging device includes a scanning frame, a radiation source and a detector according to the first aspect of the present invention; the radiation source and the detector are respectively arranged on the scanning frame, the radiation source is used to emit rays toward the scanned object, and the detector is used to receive rays attenuated by the scanned object.

[0017] According to the medical imaging device of the present invention, by providing the detector according to the first aspect, the heat dissipation capability of the medical imaging device is further improved.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a partial structural cross-sectional view of a detector according to one embodiment of the present invention;

[0020] Figure 2 is a partial structural schematic diagram of a detector according to one embodiment of the present invention;

[0021] Figure 3 is a schematic structural diagram of a detector module according to one embodiment of the present invention;

[0022] Figure 4 is based on Figure 2 A partial enlarged view of area A of the example shown;

[0023] Figure 5 is a bottom view of a detector module according to one embodiment of the present invention;

[0024] Figure 6 is based on Figure 5 AA section of the example shown;

[0025] Figure 7 FIG. 4 is another structural diagram of a detector module according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Detector 100;

[0028] Detector module 1; module bracket 11; heat dissipation duct 111; second air inlet 112; air outlet 113; first air inlet 114; submodule 12; circuit board 13;

[0029] Shell 2; first shell 21; second shell 22; airflow cavity 23; heat dissipation air inlet 231; heat dissipation air outlet 232;

[0030] Fan 3;

[0031] Cover body 4; first cover shell 41; second cover shell 42. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will appreciate the applicability of other processes and / or the use of other materials.

[0034] The detector 1000 is used to detect the rays emitted by the radiation source after being attenuated by the scanned object. The detector 1000 can be used in any device and can be used in medical imaging equipment or other equipment that requires scanning and imaging, such as security inspection machines.

[0035] In CT scanners, XYZ coordinates are usually used, where X is the arrangement direction of the module bracket 1, Y is the vertical direction, and Z is perpendicular to the plane formed by the XY directions. The Z direction is usually the rotation axis of the scanner.

[0036] The X, Y, and Z directions mentioned below are coordinate directions commonly used in CT scanners when the detector module is used in a CT scanner. When the detector is used in other devices, the X, Y, and Z directions mentioned below can be expressed as three mutually perpendicular directions, i.e., the X direction is a first direction, the Y direction is a second direction, and the Z direction is a third direction, and the first direction, the second direction, and the third direction are mutually perpendicular.

[0037] According to the detector 100 of the embodiment of the present invention, Figure 1-Figure 3As shown, the detector 100 includes: multiple detector modules 1, a shell 2 and a fan 3, the multiple detector modules 1 are arranged along the X direction, each detector module 1 includes a module bracket 11 and multiple sub-modules 12 arranged on the module bracket 11, the module bracket 11 extends along the Z direction, and the multiple sub-modules 12 are arranged in sequence along the Z direction; the shell 2 includes a second shell 22 and a first shell 21 arranged opposite to each other along the Z direction, the multiple detector modules 1 are all installed between the second shell 22 and the first shell 21, and cooperate with the shell 2 to form an air flow cavity 23, the air flow cavity 23 has a heat dissipation air inlet 231 and a heat dissipation air outlet 232, and the heat dissipation air inlet 231 is formed on the first shell 21; the fan 3 is arranged in the air flow cavity 23, and is located on the side of the module bracket 11 facing away from the ion module 12 in the Y direction; wherein the heat dissipation air inlet 231 faces the second shell 22 and is spaced apart from the second shell 22; or, the heat dissipation air inlet 231 is arranged in the Y direction away from the detector module 1.

[0038] The detector module 1 is the primary functional element of the detector 100, and the housing 2 serves to mount and protect the detector module 1. The detector module 1 comprises a module bracket 11 and multiple submodules 12 mounted on the bracket 11. The bracket 11 serves as the primary support and mounting component for the detector module 1, and multiple submodules 12 are mounted on the bracket 11. The submodules 12 typically consist of a scintillator array, photodiodes, a substrate, and an A / D conversion circuit. These submodules 12 are the primary functional components of the detector module 1, detecting X-rays emitted by the radiation source after attenuation by the scanned object and converting them into electrical signals. The scintillator array typically has a 32×16 or 16×16 matrix structure.

[0039] The housing 2 includes a second housing 22 and a first housing 21, which are arranged opposite each other along the Z direction. The detector modules 1 are mounted between the second housing 22 and the first housing 21. Multiple detector modules 1 are mounted on the housing 2. The multiple detector modules 1 cooperate with the housing 2 to form an airflow cavity 23, which allows airflow to flow through. Airflow flows in through the heat dissipation inlet 231 and out through the heat dissipation outlet 232, thereby exchanging heat with the multiple detector modules 1 and dissipating heat, thereby improving the operational stability of the detector modules 1.

[0040] It is worth noting that the cooperation between the multiple detector modules 1 and the housing 2 to form the airflow cavity 23 can refer to the multiple detector modules 1 and the housing 2 jointly forming the airflow cavity 23, or the airflow cavity 23 being formed within the multiple detector modules 1. In other words, the entire airflow cavity 23 can be located outside the multiple detector modules 1, or the entire airflow cavity 23 can be located inside the multiple detector modules 1, or the airflow cavity 23 can be partially located outside the multiple detector modules 1 and partially located inside the multiple detector modules 1 (for example, the module bracket 11 described below includes a heat dissipation duct 111, and the multiple heat dissipation ducts 111 are configured as part of the airflow cavity 23).

[0041] In the related art, the fan of the detector is arranged at one end of the detector in the Z direction. The fan draws air along the Z direction and makes the air flow pass through the air duct of the detector module to actively dissipate heat.

[0042] In the embodiment of the present invention, the fan 3 is arranged in the Y direction of the detector module 1. The fan 3 is located on the side of the module bracket 11 facing away from the ion module 12 in the Y direction. The fan 3 drives the air flow from the heat dissipation air inlet 231 into the air flow cavity 23. Figure 1 The dashed line with an arrow in the middle represents the airflow direction to accelerate the heat dissipation of the detector module 1. The fan 3 is disposed within the airflow cavity 23. The heat dissipation air inlet 231 of the airflow cavity 23 faces the second shell 22 and is spaced apart from the second shell 22, or the heat dissipation air inlet 231 is disposed in the Y direction away from the detector module 1. The fan 3 is disposed so as not to exceed the housing 2 in the Z direction, thereby reducing the Z-direction dimension of the detector 100, reducing the volume of the detector 100, and improving space utilization, which is beneficial for the layout of the detector 100.

[0043] In addition, the fan 3 is arranged in the Y direction of the detector module 1, the heat dissipation air inlet 231 of the air flow cavity 23 faces the second shell 22 and is spaced apart from the second shell 22, or the heat dissipation air inlet 231 is arranged in the Y direction away from the detector module 1, and the air intake space available for the fan 3 can also be increased. Compared with setting the fan's air inlet directly opposite the detector cover, the present invention can improve the air intake smoothness of the fan 3 and increase the air intake efficiency of the fan 3, thereby improving the heat dissipation speed of the detector module 1.

[0044] According to the detector 100 of the embodiment of the present invention, by arranging the fan 3 in the Y direction of the detector module 1, the Z-direction dimension of the detector 100 can be reduced, and space utilization can be improved, thereby reducing the volume of the detector 100 and facilitating its layout. This arrangement also avoids obstruction of the fan 3's air inlet, increasing the air intake space available to the fan 3, improving the smoothness of the fan 3's air intake, and increasing the fan 3's air intake efficiency, thereby improving the heat dissipation rate of the detector module 1.

[0045] In some embodiments of the present invention, Figure 3 As shown, a circuit board 13 is provided on the module bracket 11, and the digital signal or analog signal generated by the submodule 12 is transmitted to the circuit board 13. The circuit board 13 is used to convert the analog signal generated by the submodule 12 into a digital signal or process the digital signal and transmit it to the communication system.

[0046] In some embodiments of the present invention, Figure 1 As shown, the airflow chamber 23 includes a first chamber 23a and a second chamber 23b. The first chamber 23a extends along the Z direction. A heat dissipation outlet 232 is formed at one Z-direction end of the first chamber 23a. The second chamber 23b is bent and connected to the other Z-direction end of the first chamber 23a, or the second chamber 23b is arranged adjacent to the other Z-direction end of the first chamber 23a. Multiple detector modules 1 are arranged corresponding to the first chamber 23a. The second chamber 23b is located on the side of the module bracket 11 facing away from the ion module 12 in the Y direction. The fan 3 is located in the second chamber 23b, and a heat dissipation inlet 231 is formed in the second chamber.

[0047] The submodule 12 can be connected to the module support 11 by bolts, adhesives, or other means. When the detector 100 is in operation, the submodule 12 generates a significant amount of heat. The gap between the submodule 12 and the module support 11 can be an air gap, or it can be filled with a thermally conductive material such as thermal grease to reduce thermal resistance. Heat is transferred from the submodule 12 to the module support 11. Since the module support 11 extends in the Z direction, extending the first cavity 23a in the Z direction increases the contact area between the airflow and the module support 11, thereby increasing the heat exchange area of the detector module 1 and improving the heat dissipation efficiency of the detector module 1.

[0048] The fan 3 is arranged in the second cavity 23b, driving the air flow to flow in from the heat dissipation air inlet 231. After the air flow flows into the heat dissipation air inlet 231, it flows along the Y direction to the first cavity 23a, and then flows along the Z direction to the heat dissipation air outlet 232. The air flow after heat exchange with the detector module 1 is discharged from the heat dissipation air outlet 232, and the heat is taken out of the detector 100 at the same time.

[0049] In some embodiments of the present invention, Figure 1 As shown, the fan 3 is a centrifugal fan, and the heat dissipation air inlet 231 is arranged toward the second shell 22 .

[0050] Fan 3 is a centrifugal fan. After being blown in by the centrifugal fan, the direction of the cooling air changes from axial to radial. Therefore, air flows into the fan 3's inlet along the Z direction and then flows out in the fan's radial direction. By providing a centrifugal fan that changes the airflow direction, the centrifugal fan can be placed in the Y direction of the module bracket 11, eliminating the need for a front-to-back stacking arrangement. Furthermore, this placement of the centrifugal fan reduces the space occupied in the Z direction, allowing the detector 100's size in the Z direction to be controlled. Figure 1The dotted line with an arrow in the middle represents the airflow direction. The airflow is sucked into the fan 3 along the Z direction and then transported toward the detector module 1 along the Y direction.

[0051] Furthermore, centrifugal fans can provide greater pressure than axial fans, so fewer fans 3 can be used to meet the heat dissipation requirements, which is beneficial to noise control of the entire machine.

[0052] In other embodiments of the present invention, the fan 3 is an axial flow fan, and the heat dissipation air inlet 231 is arranged in the Y direction and away from the module bracket 11. By arranging the fan 3 in the Y direction of the module bracket 11 without having to be stacked front and back with the module bracket 11, the size of the detector 100 in the Z direction can be controlled.

[0053] In some embodiments of the present invention, Figure 1 As shown, the second cavity 23b is arranged opposite to the end of the module bracket 11 in the Z direction away from the heat dissipation outlet 232 in the Y direction.

[0054] The second cavity 23b completely covers the entire module bracket 11, which can increase the heat exchange area and improve the heat exchange effect.

[0055] In some embodiments of the present invention, Figure 1 As shown, the detector 100 also includes: a cover body 4, the cover body 4 includes a first cover shell 41 and a second cover shell 42, the first cover shell 41 is arranged on the side of the first shell 21 and the fan 3 away from the second shell 22 in the Z direction, and the second cover shell 42 is arranged on the side of the housing 2 and the multiple detector modules 1 away from the fan 3 in the Y direction, and the heat dissipation outlet 232 is formed on the side of the second shell 22 away from the first shell 21.

[0056] In related technologies, an axial flow fan is usually used for heat dissipation of the detector of a CT machine. The axial flow fan is arranged on the side of the first housing in the Z direction close to the first housing. The air inlet of the fan is close to the back of the first housing, and the air intake will not be smooth.

[0057] In some embodiments of the present invention, the fan 3 is arranged on the side of the first shell 21 away from the first cover shell 41, and the heat dissipation air inlet 231 is arranged toward the second shell 22, which can avoid the blocking effect of the cover body 4, increase the air inlet space for the fan 3, improve the air inlet smoothness of the fan 3, increase the air inlet efficiency of the fan 3, and thus improve the heat dissipation speed of the detector module 1.

[0058] In other embodiments of the present invention, the fan 3 is arranged on the side of the first shell 21 away from the first cover shell 41, and the heat dissipation air inlet 231 is arranged away from the detector module 1, which can avoid the blocking effect of the cover body 4, increase the air inlet space for the fan 3, improve the air inlet smoothness of the fan 3, increase the air inlet efficiency of the fan 3, and thus improve the heat dissipation speed of the detector module 1.

[0059] In some embodiments of the present invention, Figure 4 As shown, there are multiple fans 3 and they are arranged in sequence along the X direction.

[0060] It is understandable that the multiple detector modules 1 are arranged along the X direction. Therefore, by providing multiple fans 3 , the airflow generated by the multiple fans 3 can cover all the detector modules 1 , thereby improving the heat dissipation effect of the detector 100 .

[0061] In some embodiments of the present invention, multiple temperature sensors can be placed in the shell 2 to adjust the speed of the fan 3 according to the temperature in the shell 2, thereby controlling the flow of cold air, controlling the cooling effect of the detector 100, and preventing overcooling.

[0062] In some embodiments of the present invention, the rotation speeds of different fans 3 can be adjusted through detection by temperature sensors, thereby achieving balanced heat dissipation of multiple detector modules 1 and improving the heat dissipation effect of the detector 100 .

[0063] In some embodiments of the present invention, Figure 1 As shown, the airflow cavity 23 includes a heat dissipation duct 111 located within the module bracket 11. The heat dissipation duct 111 extends along the Z direction and passes through an end of the module bracket 11 away from the heat dissipation inlet 231 in the Z direction to form an airflow outlet 113. The heat dissipation duct 111 passes through an end of the module bracket 11 adjacent to the heat dissipation inlet 231 in the Z direction to form a first airflow inlet 114.

[0064] The heat generated by the detector module 1 during operation is transferred from the submodule 12 to the module bracket 11. Therefore, a heat dissipation channel is provided on the module bracket 11. This allows airflow through the channel and allows for close heat exchange with the module bracket 11, thereby improving the heat dissipation efficiency of the detector module 1. A first airflow inlet 114 is provided at one end of the module bracket 11 in the Z direction, allowing the heat dissipation channel 111 to cover the entire heat dissipation module, ensuring more efficient heat exchange between the airflow and the module bracket 11.

[0065] The heat dissipation duct 111 forms a first air flow inlet 114 on the module bracket 11, and the first air flow inlet 114 is connected to the air flow cavity 23 outside the module bracket 11. Due to the action of the fan 3, the pressure of the air flow cavity 23 outside the module bracket 11 is greater than the pressure inside the heat dissipation duct 111. Therefore, the air flow in the air flow cavity 23 outside the module bracket 11 can flow into the heat dissipation duct 111 through the first air flow inlet 114, and a pressure difference is generated between the first air flow inlet 114 and the air flow outlet 113, so that the air flows in a direction in the heat dissipation duct 111, so that the heat of the module bracket 11 is carried out of the detector 100 by the air flow in the heat dissipation duct 111.

[0066] In some embodiments of the present invention, Figure 5-Figure 7As shown, the heat dissipation duct 111 passes through one end of the module bracket 11 facing away from the ion module 12 in the Y direction to form a second airflow inlet 112. The second airflow inlet 112 is disposed adjacent to the heat dissipation air inlet 231. Due to the action of the fan 3, the pressure in the airflow cavity 23 outside the module bracket 11 is greater than the pressure inside the heat dissipation duct 111. Therefore, the airflow in the airflow cavity 23 outside the module bracket 11 can flow into the heat dissipation duct 111 through the second airflow inlet 112. A pressure difference is generated between the second airflow inlet 112 and the airflow outlet 113, causing the air to flow in a directional manner in the heat dissipation duct 111, thereby allowing the heat of the module bracket 11 to be carried out of the detector 100 by the airflow in the heat dissipation duct 111.

[0067] The second air inlet 112 is opened along the Y direction. The airflow is driven by the fan 3 to flow radially. The airflow flowing in the Y direction directly flows into the second air inlet 112, shortening the airflow path and improving airflow fluidity. In addition, by providing two air inlets, the air intake volume can be increased, which is beneficial to improving heat dissipation efficiency.

[0068] In some embodiments of the present invention, Figure 5 As shown, there are multiple second air inlets 112 , which are spaced apart along the Z direction and / or the X direction. The second air inlets 112 are arranged opposite to the heat dissipation air inlet 231 in the Y direction.

[0069] In other embodiments of the present invention, there may be only one second air flow inlet 112 .

[0070] It is understandable that the airflow gradually heats up after entering the airflow channel, and the cooling effect also decreases accordingly. Therefore, the temperature of the module bracket 11 near the heat dissipation outlet 232 in the Z direction is often higher than the temperature near the heat dissipation inlet 231 in the Z direction.

[0071] By controlling the position, number and size of the second air inlets 112 , local cooling of specific positions of the module bracket 11 can be achieved. By arranging the second air inlets 112 asymmetrically in the Z direction, a more uniform temperature distribution of the module bracket 11 can be achieved.

[0072] According to the second embodiment of the present invention, the medical imaging device includes a scanning frame, a radiation source, and the detector 100 of the above embodiment.

[0073] The radiation source and detector 100 are each mounted on the gantry. The radiation source is used to emit radiation toward the scanned object, while the detector 100 is used to receive radiation attenuated by the scanned object. As the gantry rotates about the Z axis, the radiation source and detector 100 rotate synchronously with the gantry, maintaining radially opposed positions at all times. This allows the detector 100 to receive radiation, such as X-rays, emitted by the radiation source and passing through the scanned object.

[0074] The structure of the scanning frame is not limited. For example, the scanning frame forms a scanning cavity for receiving the scanned object, and the radiation source and the detector 100 are respectively arranged on both radial sides of the scanning cavity.

[0075] Illustratively, in addition to the above components, the medical imaging device may further include a scanning bed for carrying a scanned object.

[0076] According to the medical imaging device of the present invention, by providing the detector 100 , the heat dissipation capability of the medical imaging device is improved.

[0077] The working process of the CT detector 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0078] With the advancement of CT, the coverage area of the human body required for a single scan is increasing. Consequently, the number of layers in the CT detector 100 system is increasing, and the number of corresponding detector pixel units is also increasing. This requires the installation of more submodules on the detector module. The increased number of submodules results in an exponential increase in the detector's thermal power consumption. The scintillator, the core component of the detector, requires a stable temperature environment. Failure to effectively control the temperature rise caused by the addition of submodules will lead to a decrease in CT imaging quality. Furthermore, the increase in the number of submodules will also increase the detector's Z-dimensional size. Higher heat dissipation requirements necessitate the use of higher-performance fans, which also increases the Z-dimensional size. Therefore, resolving the Z-dimensional space bottleneck is a challenge.

[0079] This embodiment uses a centrifugal fan as the air source for the detector air cooling solution. The air inlet of the centrifugal fan is away from the back of the rack front cover, and the air inlet direction is the same as the back of the rack front cover, and the air outlet direction is perpendicular to the arrangement direction of the detector modules. The detector module is connected to the bracket, and the interior of the bracket is made into a hollow air duct for airflow. Ventilation holes are opened on the bottom surface of the bracket as a supplementary airflow channel. An exhaust port is opened on the hood at the position of the air duct at the rear of the bracket. The above structure constitutes the cooling path of the detector 100, thereby realizing the cooling of the detector 100.

[0080] By positioning the centrifugal fan away from the back of the rack front cover, it avoids obstruction by the fan 3 air inlet, improving the air intake efficiency of the fan 3. Furthermore, by aligning the back of the rack front cover with the fan 3 and no longer coaxially with the module, the Z-direction dimension of the detector 100 can be reduced, increasing space utilization within the CT. By designing a thermal path between the submodules 12 and the bracket, and by providing ventilation holes in the module bracket 11, the heat dissipation capacity of the detector module can be enhanced, reducing the temperature difference between the submodules 12 in the Z direction and improving heat dissipation efficiency.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 limiting the present invention.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0083] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0084] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0085] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0086] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A detector, characterized in that: include: a plurality of detector modules, the plurality of detector modules being arranged along the X direction, each of the detector modules comprising a module support and a plurality of submodules provided on the module support, the module support extending along the Z direction, and the plurality of submodules being arranged sequentially along the Z direction; a housing, the housing comprising a second housing and a first housing disposed opposite to each other along the Z direction, the plurality of detector modules being mounted between the second housing and the first housing, and cooperating with the housing to form an airflow cavity, the airflow cavity having a heat dissipation inlet and a heat dissipation outlet, the heat dissipation inlet being formed on the first housing; a fan, the fan being disposed in the airflow cavity and located on a side of the module bracket facing away from the submodule in the Y direction; The heat dissipation air inlet is disposed toward the second shell and spaced apart from the second shell; or, the heat dissipation air inlet is disposed in the Y direction facing away from the detector module.

2. The detector according to claim 1, characterized in that The airflow cavity includes a first cavity and a second cavity, the first cavity extends along the Z direction, the heat dissipation outlet is formed at one end of the first cavity in the Z direction, the second cavity is bent and connected to the other end of the first cavity in the Z direction, or the second cavity is arranged adjacent to the other end of the first cavity in the Z direction, a plurality of detector modules are arranged corresponding to the first cavity, the second cavity is located on the side of the module bracket away from the sub-module in the Y direction, the fan is arranged in the second cavity, and the heat dissipation air inlet is formed in the second cavity.

3. The detector according to claim 2, characterized in that The fan is a centrifugal fan, and the heat dissipation air inlet is arranged toward the second shell.

4. The detector according to claim 2, characterized in that The second cavity and an end of the module bracket in the Z direction away from the heat dissipation outlet are arranged opposite to each other in the Y direction.

5. The detector according to claim 2, characterized in that Also includes: The heat dissipation outlet is formed on a side of the second shell facing away from the first shell.

6. The detector according to claim 1, characterized in that There are multiple fans, which are arranged in sequence along the X direction.

7. The detector according to any one of claims 1 to 6, characterized in that The airflow cavity includes a heat dissipation duct located in the module bracket, which extends along the Z direction. The heat dissipation duct passes through one end of the module bracket away from the heat dissipation air inlet in the Z direction, and passes through one end of the module bracket adjacent to the heat dissipation air inlet in the Z direction to form a first airflow inlet.

8. The detector according to claim 7, characterized in that The heat dissipation duct passes through one end of the module bracket in the Y direction away from the submodule to form a second air flow inlet, and the second air flow inlet is arranged adjacent to the heat dissipation air inlet.

9. The detector according to claim 8, characterized in that There are multiple second air flow inlets, and the multiple second air flow inlets are arranged at intervals along the Z direction and / or the X direction. The second air flow inlet and the heat dissipation air inlet are arranged opposite to each other in the Y direction.

10. A medical imaging device, characterized in that: comprising a scanning frame, a radiation source and a detector according to any one of claims 1 to 9; The radiation source and the detector are respectively arranged on the scanning frame. The radiation source is used to emit radiation toward the scanned object, and the detector is used to receive the radiation attenuated by the scanned object.

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