Desktop type PET imaging device

Abstract

The utility model is suitable for the technical field of PET imaging, and provides a desktop type PET imaging device which comprises a frame, an aluminum alloy supporting frame and a detection assembly, the frame comprises a plurality of aluminum materials, the aluminum materials are in lap joint to define a containing area, the detection assembly is located in the containing area, and the detection assembly is connected with at least one aluminum material through the aluminum alloy supporting frame. According to the imaging device, the detection assembly is installed through the frame formed by the multiple aluminum materials in the lap joint mode and the aluminum alloy supporting frame, and due to the fact that the aluminum materials are light in weight, the weight of the whole imaging device can be effectively reduced. Moreover, the frame and the aluminum alloy support frame are of frame body structures, so that the occupied space is relatively small, and the volume and the weight of the imaging device are more favorably reduced, so that the desktop type PET imaging device provided by the utility model can be directly mounted on a desktop, the portability is higher, and the practicability is higher. The desktop type PET imaging device provided by the utility model can also be applied to some small and medium-sized mechanisms.

Description

Technical Field

[0001] The present application relates to the field of PET imaging technology, and more specifically, to a desktop PET imaging device. Background Art

[0002] Small animal PET (Positron Emission Computed Tomography) imaging devices, developed based on clinical diagnostic techniques, are specifically designed for in vivo small animal research. Compared to clinical PET imaging devices, small animal PET imaging devices offer higher resolution and sensitivity, adapting to the requirements of small animal model research. In recent years, with the advancement of crystal materials, detection technology, electronics, image reconstruction, and computer technology, a large number of new technologies have been applied to the development of small animal PET imaging devices, resulting in the development of even higher-resolution small animal rotational PET imaging devices.

[0003] However, the small animal PET imaging devices commonly available on the market are usually large in size, difficult to move or transport, and cannot be flexibly used in different locations. In addition, these large small animal PET imaging devices require a large area to be installed, making it difficult for some small and medium-sized institutions to use small animal PET imaging devices for research and experiments. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a desktop PET imaging device, aiming to solve the technical problem that the existing small animal PET imaging devices are relatively large in size and difficult to be applied to small and medium-sized institutions.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a desktop PET imaging device, including a frame, an aluminum alloy support frame and a detection assembly, the frame includes multiple aluminum materials, and the multiple aluminum materials are overlapped and arranged to form a accommodating area. The detection assembly is located in the accommodating area, and the detection assembly is connected to at least one of the aluminum materials through the aluminum alloy support frame.

[0006] In a possible design, the aluminum alloy support frame includes two aluminum alloy support plates and two aluminum alloy mounting plates, the two aluminum alloy support plates are spaced apart along a first direction and are connected to the aluminum material, the two aluminum alloy mounting plates are installed between the two aluminum alloy support plates, the two aluminum alloy mounting plates are spaced apart along a second direction, and the first direction and the second direction are set at an angle; the two aluminum alloy support plates and the two aluminum alloy mounting plates are arranged to form an installation area, the detection assembly is located in the installation area, and is respectively connected to the two aluminum alloy mounting plates.

[0007] In a possible design, the aluminum alloy support plate is provided with at least one first hollow hole along its thickness direction, and the aluminum alloy mounting plate is provided with at least one second hollow hole along its thickness direction.

[0008] In one possible design, the aluminum alloy support plate is a rectangular plate, and the aluminum alloy support plate has a reinforcement area, which is distributed along one of the diagonals of the aluminum alloy support plate; the aluminum alloy support plate is provided with a plurality of the first hollow holes, and the plurality of the first hollow holes are respectively located on opposite sides of the reinforcement area.

[0009] In a possible design, the aluminum alloy support plate has two reinforcement areas, one of which is distributed along one diagonal line of the aluminum alloy support plate, and the other reinforcement area is distributed along the other diagonal line of the aluminum alloy support plate; the two reinforcement areas divide the aluminum alloy support plate into four hollow areas, and each hollow area is provided with at least one first hollow hole.

[0010] In a possible design, the aluminum alloy mounting plate is provided with a plurality of second hollow holes penetrating along the thickness direction thereof, and the plurality of second hollow holes are arranged at intervals along the vertical direction.

[0011] In one possible design, the detection assembly includes a plurality of detectors, and the plurality of detectors are sequentially arranged circumferentially around the first axis; the aluminum alloy support frame has a plurality of positioning areas, and the plurality of positioning areas are arranged in a one-to-one correspondence with the plurality of detectors, and each detector is installed in a corresponding positioning area;

[0012] The detector is provided with a first positioning hole, and the positioning area is provided with a second positioning hole. The first positioning hole and the second positioning hole corresponding to the positioning area are coaxially arranged, and the first positioning hole and the corresponding second positioning hole are penetrated by a pin.

[0013] In one possible design, each detector is provided with a connection hole, each positioning area is provided with a through hole, and the connection hole on the detector is opposite to the through hole of the corresponding positioning area; the desktop PET imaging device further includes a fixing member, which passes through the through hole and is connected to the corresponding connection hole;

[0014] A first positioning hole is provided in each detector in the area on opposite sides of the connecting hole in the circumferential direction of the first axis; each positioning area is provided with multiple second positioning holes, and the multiple first positioning holes on each detector are arranged one-to-one with the multiple second positioning holes on the corresponding positioning area.

[0015] In one possible design, a side of the detector facing the first axis is a detection surface, and the desktop PET imaging device also includes a plurality of protective covers, and the plurality of protective covers are arranged in a one-to-one correspondence with the plurality of detectors, and each protective cover is arranged on the detection surface corresponding to the detector.

[0016] In a possible design, the thickness of the side wall of the protective cover ranges from 0.08 mm to 0.12 mm.

[0017] The beneficial effect of a desktop PET imaging device provided by the present application is that: compared with the prior art, the desktop PET imaging device provided by the present application, by using a frame made of multiple aluminum materials and an aluminum alloy support frame to install the detection component, due to the light weight of the aluminum material, can effectively reduce the weight of the entire imaging device. In addition, since the frame and the aluminum alloy support frame are both frame structures, the space they occupy is relatively small, which is more conducive to reducing the volume and weight of the imaging device. In summary, it can be seen that the desktop PET imaging device provided by the present application is lighter in weight and smaller in size, so that the desktop PET imaging device provided by the present application can be directly installed on the desktop, which is more portable. Some small and medium-sized institutions can also use the desktop PET imaging device provided by the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic structural diagram of a desktop PET imaging device provided by one embodiment of the present application from one viewing angle;

[0020] Figure 2 This is a schematic diagram of the assembly of a detection component and an aluminum alloy support frame in a desktop PET imaging device provided by one embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of the assembly of a detection component and a partial structure of an aluminum alloy support frame in a desktop PET imaging device provided by one embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of an aluminum alloy mounting plate in a desktop PET imaging device provided in one embodiment of the present application;

[0023] Figure 5 yes Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0024] Figure 6 It is a schematic structural diagram of a protective cover in a desktop PET imaging device provided by one embodiment of the present application.

[0025] The reference numerals used in the above drawings are as follows:

[0026] 100, frame; 110, aluminum;

[0027] 200, aluminum alloy support frame; 210, aluminum alloy support plate; 211, first hollow hole; 212, reinforcement area; 220, aluminum alloy mounting plate; 221, mounting portion; 2211, second positioning hole; 2212, through hole; 222, connecting portion; 223, hollow portion; 2231, second hollow hole; 230, connecting piece;

[0028] 300, detection assembly; 310, detector; 320, fixing piece; 330, pin; 340, detection channel; 400, protective cover; 410, inner cavity. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0030] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure 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 this application.

[0032] 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 defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0033] In order to illustrate the technical solution described in this application, the following is a detailed description with reference to specific drawings and embodiments.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a desktop PET imaging device, including a frame 100, an aluminum alloy support frame 200 and a detection assembly 300. The frame 100 includes multiple aluminum materials 110, and the multiple aluminum materials 110 are overlapped and arranged to form a receiving area. The detection assembly 300 is located in the receiving area, and the detection assembly 300 is connected to at least one aluminum material 110 through the aluminum alloy support frame 200.

[0035] In the embodiment of the present application, the frame 100 is used to enclose a housing area for accommodating the detection assembly 300, thereby providing some protection for the detection assembly 300. Since the aluminum alloy support frame 200 in the present application is relatively light and compact, the frame 100 can increase the support range of the desktop PET imaging device, thereby improving the installation stability of the desktop PET imaging device.

[0036] Optionally, the frame 100 may be a rectangular parallelepiped frame, a cylindrical frame, a triangular pyramid frame, or any other shape, which is not limited here. Adjacent aluminum materials 110 in the frame 100 may be connected by screws, clamping, welding, or any other means.

[0037] Compared with the related art, the desktop PET imaging device provided in the embodiment of the present application uses a frame 100 formed by overlapping multiple aluminum materials 110 and an aluminum alloy support frame 200 to install the detection component 300. Since the aluminum material is relatively light, the weight of the entire imaging device can be effectively reduced. In addition, since the frame 100 and the aluminum alloy support frame 200 are both frame structures, the space they occupy is relatively small, which is more conducive to reducing the volume and weight of the imaging device. In summary, the desktop PET imaging device provided in the embodiment of the present application is lighter in weight and smaller in size, so that the desktop PET imaging device provided in the embodiment of the present application can be directly installed on a desktop, which is more portable. Some small and medium-sized institutions can also use the desktop PET imaging device provided in the embodiment of the present application.

[0038] In one possible design, Figure 1 and Figure 2As shown, the aluminum alloy support frame 200 includes two aluminum alloy support plates 210 and two aluminum alloy mounting plates 220. The two aluminum alloy support plates 210 are spaced apart along a first direction and connected to the aluminum material 110. The two aluminum alloy mounting plates 220 are mounted between the two aluminum alloy support plates 210. The two aluminum alloy mounting plates 220 are spaced apart along a second direction, and the first and second directions are arranged at an angle. The two aluminum alloy support plates 210 and the two aluminum alloy mounting plates 220 enclose an installation area. The detection assembly 300 is located in the installation area and is connected to the two aluminum alloy mounting plates 220. The provision of the aluminum alloy support plates 210 and the aluminum alloy mounting plates 220 facilitates the installation of the detection assembly 300 in the accommodating area of ​​the frame 100. The installation area enclosed by the aluminum alloy support plates 210 and the aluminum alloy mounting plates 220 further protects the detection assembly 300.

[0039] In the embodiments of the present application, the first direction and the second direction can be set at various angles greater than 0 degrees. In one example, the first direction and the second direction are perpendicular to each other, and both the first direction and the second direction are horizontal. For ease of description, the following description uses the example of the first direction and the second direction being perpendicular to each other, and both the first direction and the second direction being horizontal.

[0040] Optionally, the two aluminum alloy support plates 210 can be connected to the same aluminum material 110, or they can be connected to different aluminum materials 110. Optionally, the two aluminum alloy support plates 210 can be connected to the aluminum material 110 directly or indirectly. In one example, the aluminum alloy support frame 200 also includes a connector 230, which can also be made of an aluminum alloy material. The two aluminum alloy support plates 210 are mounted on the connector 230, which is connected to the aluminum material 110, so that the aluminum alloy support frame 200 is stably mounted on the frame 100.

[0041] In one possible design, Figure 2 or Figure 3 As shown, the aluminum alloy support plate 210 is provided with at least one first hollow hole 211 extending through its thickness, and the aluminum alloy mounting plate 220 is provided with at least one second hollow hole 2231 extending through its thickness. The shapes of the first hollow hole 211 and the second hollow hole 2231 can be the same or different. The provision of the first hollow hole 211 and the second hollow hole 2231 makes the aluminum alloy support frame 200 lighter, thereby further reducing the weight of the desktop PET imaging device.

[0042] Optionally, there may be multiple first hollow holes 211 , which are spaced apart on the aluminum alloy support plate 210 . Optionally, there may be multiple second hollow holes 2231 , which are spaced apart on the aluminum alloy mounting plate 220 .

[0043] In one possible design, Figure 2 or Figure 3 As shown, the aluminum alloy support plate 210 is a rectangular plate having a reinforced area 212 disposed along one of its diagonals. The aluminum alloy support plate 210 is provided with a plurality of first hollow holes 211, located on opposite sides of the reinforced area 212. This arrangement allows the reinforced area 212 to form two triangular support areas at the edge of the aluminum alloy support plate 210, thereby enhancing the structural strength and support stability of the aluminum alloy support plate 210.

[0044] In one example, on the same aluminum alloy support plate 210, there are two first hollow holes 211, and the two first hollow holes 211 are respectively located on opposite sides of the reinforcement area 212. Optionally, the two aluminum alloy support plates 210 have the same structural shape.

[0045] In one possible design, the aluminum alloy support plate 210 has two reinforced areas 212, one of which is located along one diagonal of the aluminum alloy support plate 210, and the other along the other diagonal of the aluminum alloy support plate 210. The two reinforced areas 212 divide the aluminum alloy support plate 210 into four hollow areas, each of which is provided with at least one first hollow hole 211. In this arrangement, the provision of two reinforced areas 212 further enhances the structural strength of the aluminum alloy support plate 210, thereby further improving the support stability of the aluminum alloy support plate 210. Optionally, each hollow area is provided with a first hollow hole 211.

[0046] In one possible design, Figure 2 and Figure 4 As shown, the aluminum alloy mounting plate 220 is provided with a plurality of second hollow holes 2231 extending through its thickness. The plurality of second hollow holes 2231 are spaced apart vertically. This arrangement allows the aluminum alloy mounting plate 220 body, which extends horizontally, to be located between two adjacent second hollow holes 2231. The presence of the aluminum alloy mounting plate 220 body effectively improves the bending resistance of the aluminum alloy mounting plate 220. This ensures that the entire aluminum alloy support frame 200 has greater support stability while maintaining a relatively light weight.

[0047] In one example, Figure 2and Figure 4 As shown, the aluminum alloy mounting plate 220 includes a mounting portion 221 and two connecting portions 222. The two connecting portions 222 are located on opposite sides of the mounting portion 221 in a first direction. The mounting portion 221 is connected to the detection assembly 300. The two connecting portions 222 correspond one-to-one with the aluminum alloy support plates 210 on opposite sides of the aluminum alloy mounting plate 220. Each connecting portion 222 is connected to a corresponding aluminum alloy support plate 210. The mounting portion 221 and each connecting portion 222 are connected by a hollow portion 223, and the second hollow hole 2231 is specifically provided in the hollow portion 223. Optionally, the mounting portion 221, the hollow portion 223, and the connecting portion 222 can be connected to form a single structure by integral molding. For example, the mounting portion 221, the hollow portion 223, and the connecting portion 222 can be connected to form a single structure by casting. In some embodiments, each hollow portion 223 is provided with two second hollow holes 2231, and the two second hollow holes 2231 are spaced apart in the vertical direction. Optionally, the structural shapes of the two aluminum alloy mounting plates 220 may be the same or different, which is not limited here.

[0048] In one possible design, Figures 3 to 5 As shown, the detection assembly 300 includes a plurality of detectors 310, and the plurality of detectors 310 are arranged in sequence around the circumference of the first axis. The aluminum alloy support frame 200 has a plurality of positioning areas, and the plurality of positioning areas are arranged in a one-to-one correspondence with the plurality of detectors 310, and each detector 310 is installed in the corresponding positioning area. The detector 310 is provided with a first positioning hole (not shown in the figure), and the positioning area is provided with a second positioning hole 2211. The first positioning hole and the second positioning hole 2211 of the corresponding positioning area are coaxially arranged, and the first positioning hole and the corresponding second positioning hole 2211 are penetrated by a pin 330. In this arrangement, by making the first positioning hole and the corresponding second positioning hole 2211 opposite to each other, and then passing the pin 330 through the first positioning hole and the second positioning hole 2211, the detector 310 can be positioned with the corresponding positioning area, so that the detector 310 can be quickly installed on the aluminum alloy support frame 200.

[0049] Specifically, the mounting portion 221 in the aluminum alloy mounting plate 220 has a plurality of positioning areas, and the plurality of positioning areas are arranged at circumferential intervals around the first axis. In the embodiment of the present application, the first axis is arranged parallel to the second direction. Optionally, only one of the two aluminum alloy mounting plates 220 is provided with a plurality of positioning areas. Specifically, the aluminum alloy mounting plate 220 located on the first side of the detector 310 in the second direction is provided with a plurality of positioning areas, each positioning area is provided with a second positioning hole 2211, and the detector 310 is provided with a first positioning hole on the side surface of the first side in the second direction, and the first positioning hole is arranged opposite to the second positioning hole 2211 in the corresponding positioning area. Alternatively, optionally, both aluminum alloy mounting plates 220 can be provided with a plurality of positioning areas, and the detector 310 is positioned with the two aluminum alloy mounting plates 220 respectively by pins 330. For ease of description, the following description will be based on the example of only one of the two aluminum alloy mounting plates 220 being provided with a plurality of positioning areas.

[0050] In one possible design, Figure 5 As shown, each detector 310 is provided with a connection hole, and each positioning area is provided with a through-hole 2212. The connection holes on the detector 310 correspond to the through-holes 2212 in the corresponding positioning area. The desktop PET imaging device also includes a fixing member 320, which passes through the through-hole 2212 and connects to the corresponding connection hole. Each detector 310 is provided with a first positioning hole in the area located on opposite sides of the connection hole in the circumferential direction of the first axis. Each positioning area is provided with a plurality of second positioning holes 2211. The plurality of first positioning holes on each detector 310 are provided in a one-to-one correspondence with the plurality of second positioning holes 2211 in the corresponding positioning area.

[0051] As can be seen from the above, each detector 310 is provided with at least two first positioning holes, and the two first positioning holes are respectively located on two opposite sides of the connecting hole in the circumferential direction of the first axis.

[0052] By respectively arranging first positioning holes on opposite sides of the connecting hole of each detector 310 in the circumferential direction of the first axis, during the installation process, when at least two first positioning holes and the corresponding second positioning holes 2211 on the same detector 310 are respectively inserted into the pin 330, and the pin 330 passing through the first positioning hole and the corresponding second positioning hole 2211 is the same pin 330, the position of the detector 310 and the corresponding positioning area can be completely defined. In this way, the angle between the detector 310 and the adjacent detector 310 can be accurately defined, thereby reducing the angle error between adjacent detectors 310.

[0053] In this embodiment, the fixing member 320 can be a pin, a screw, or other connecting structure, which is not limited here. Optionally, each detector 310 can be provided with a plurality of connecting holes on the first side in the second direction, and the mounting portion 221 of the aluminum alloy mounting plate 220 located on the same side of the detector 310 has a plurality of positioning areas, each positioning area is provided with a plurality of through holes 2212, and the plurality of connecting holes of each detector 310 are arranged in a one-to-one correspondence with the plurality of through holes 2212 in the corresponding positioning area. The desktop PET imaging device also includes a plurality of fixing members 320, the plurality of fixing members 320, the plurality of connecting holes, and the plurality of through holes 2212 are arranged in a one-to-one correspondence, and each fixing member 320 is connected to the corresponding connecting hole through the corresponding through hole 2212. In this embodiment, each detector 310 is provided with two first positioning holes on the first side in the second direction, the two first positioning holes are arranged circumferentially spaced around the first axis, and the plurality of connecting holes are spaced between the two first positioning holes. This helps to improve the positioning accuracy and assembly reliability during the assembly process.

[0054] In one possible design, Figure 5 and Figure 6 As shown, the side of the detector 310 facing the first axis is the detection surface. The desktop PET imaging device also includes multiple protective covers 400, which are arranged in a one-to-one correspondence with the multiple detectors 310. Each protective cover 400 is positioned to cover the detection surface of a corresponding detector 310. It is worth noting that the multiple detectors 310 are arranged sequentially around the first axis, so that the multiple detectors 310 enclose a detection channel 340. The first axis is the axis of the detection channel 340, and the side of the detector 310 facing the first axis is the side of the detector 310 facing the detection channel 340. The protective covers 400 are primarily used to protect the detectors 310. The protective covers 400 can effectively reduce interference caused by light from the external environment on the detectors 310, thereby improving the imaging quality of the desktop PET imaging device.

[0055] Optionally, the protective cover 400 may be a shell structure with an opening, such as Figure 5 and Figure 6 As shown, the protective cover 400 has an inner cavity 410 and an opening communicating with the inner cavity 410. During assembly, the protective cover 400 is mounted on the detection surface of the detector 310 through the opening.

[0056] In one possible design, the sidewall thickness of protective cover 400 ranges from 0.08 mm to 0.12 mm. Using sidewalls within this thickness range allows for a thinner protective cover 400, which reduces interference from external light on detector 310 while also preventing excessive thickness of protective cover 400 from affecting imaging results. Alternatively, the sidewall thickness of protective cover 400 can be 0.08 mm, 0.1 mm, 0.11 mm, or 0.12 mm, among others.

[0057] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A desktop PET imaging device, characterized in that: It includes a frame, an aluminum alloy support frame and a detection component. The frame includes multiple aluminum materials. The multiple aluminum materials are overlapped and arranged to form a accommodating area. The detection component is located in the accommodating area, and the detection component is connected to at least one of the aluminum materials through the aluminum alloy support frame.

2. The desktop PET imaging device according to claim 1, wherein: The aluminum alloy support frame includes two aluminum alloy support plates and two aluminum alloy mounting plates, the two aluminum alloy support plates are spaced apart along a first direction and are connected to the aluminum material, the two aluminum alloy mounting plates are installed between the two aluminum alloy support plates, the two aluminum alloy mounting plates are spaced apart along a second direction, and the first direction and the second direction are set at an angle; the two aluminum alloy support plates and the two aluminum alloy mounting plates are arranged to form an installation area, the detection assembly is located in the installation area, and is respectively connected to the two aluminum alloy mounting plates.

3. The desktop PET imaging device according to claim 2, wherein: The aluminum alloy support plate is provided with at least one first hollow hole along its thickness direction, and the aluminum alloy mounting plate is provided with at least one second hollow hole along its thickness direction.

4. The desktop PET imaging device according to claim 3, wherein: The aluminum alloy support plate is a rectangular plate having a reinforcement area, which is distributed along one of the diagonals of the aluminum alloy support plate; the aluminum alloy support plate is provided with a plurality of the first hollow holes, which are respectively located on opposite sides of the reinforcement area.

5. The desktop PET imaging device according to claim 4, wherein: The aluminum alloy support plate has two reinforcement areas, one of which is distributed along one diagonal line of the aluminum alloy support plate, and the other reinforcement area is distributed along the other diagonal line of the aluminum alloy support plate; the two reinforcement areas divide the aluminum alloy support plate into four hollow areas, and each hollow area is provided with at least one first hollow hole.

6. The desktop PET imaging device according to claim 3, wherein: The aluminum alloy mounting plate is provided with a plurality of second hollow holes penetrating along the thickness direction thereof, and the plurality of second hollow holes are arranged at intervals along the vertical direction.

7. The desktop PET imaging device according to any one of claims 1 to 6, wherein: The detection assembly includes a plurality of detectors, which are sequentially arranged in a circumferential direction around the first axis; the aluminum alloy support frame has a plurality of positioning areas, which are arranged in a one-to-one correspondence with the plurality of detectors, and each detector is installed in a corresponding positioning area; The detector is provided with a first positioning hole, and the positioning area is provided with a second positioning hole. The first positioning hole and the second positioning hole corresponding to the positioning area are coaxially arranged, and the first positioning hole and the corresponding second positioning hole are penetrated by a pin.

8. The desktop PET imaging device according to claim 7, wherein: Each of the detectors is provided with a connection hole, and each of the positioning areas is provided with a through hole, wherein the connection hole on the detector is opposite to the through hole of the corresponding positioning area; the desktop PET imaging device further includes a fixing member, which passes through the through hole and is connected to the corresponding connection hole; A first positioning hole is provided in each detector in the area on opposite sides of the connecting hole in the circumferential direction of the first axis; each positioning area is provided with multiple second positioning holes, and the multiple first positioning holes on each detector are arranged one-to-one with the multiple second positioning holes on the corresponding positioning area.

9. The desktop PET imaging device according to claim 7, wherein: A side of the detector facing the first axis is a detection surface. The desktop PET imaging device also includes a plurality of protective covers, which are arranged in a one-to-one correspondence with the plurality of detectors, and each protective cover is arranged on the detection surface corresponding to the detector.

10. The desktop PET imaging device according to claim 9, wherein: The thickness of the side wall of the protective cover ranges from 0.08 mm to 0.12 mm.

Images