PET equipment and PET-MR system

Abstract

The utility model relates to PET equipment and a PET-MR system. The PET equipment comprises a scanning cylinder, PET detectors and a connecting mechanism, and the PET detectors are arranged in the circumferential direction of the scanning cylinder; the connecting mechanism comprises an interface assembly and a connector assembly which are detachably connected, one of the interface assembly and the connector assembly is arranged on the scanning cylinder, and the other one of the interface assembly and the connector assembly is used for being connected with an external cable. According to the PET equipment and the PET-MR system provided by the invention, the structure of the PET equipment can be simplified, and the disassembly and assembly efficiency of the PET equipment can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of radiotherapy, and in particular to a PET device and a PET-MR system. Background Art

[0002] PET-MR equipment is a nuclear medicine molecular imaging device that organically combines PET (positron emission tomography) and MR (magnetic resonance) imaging. It can complete PET and MR examinations at the same time, and has the advantages of MR examinations and the advantages of PET technology. In related technologies, PET equipment and MR equipment are generally assembled as an inseparable whole. For scenarios where only MR scanning is required, the equipment cost is high. In addition, the PET equipment itself will take up a certain amount of space, which is not conducive to the space utilization of MR equipment. In addition, the number of connecting cables on the PET equipment is large and the size is large, which makes it difficult to assemble and connect the PET equipment and the MR equipment, and the PET-MR equipment is inconvenient to maintain. Utility Model Content

[0003] Based on this, it is necessary to provide a PET device and a PET-MR system, aiming to simplify the structure of the PET device and improve the disassembly and maintenance efficiency of the PET device.

[0004] An embodiment of the first aspect of the present application provides a PET device, which includes a scanning tube, a PET detector and a connecting mechanism, wherein the PET detector is arranged along the circumference of the scanning tube; the connecting mechanism includes a detachably connected interface component and a connector component, one of the interface component and the connector component is arranged on the scanning tube, and the other of the interface component and the connector component is used to connect to an external cable.

[0005] In the embodiment of the present application, the PET detector and the external cable are detachably connected via a connecting mechanism. The PET detector can be inserted into the scanning cavity of the MR device before the external cable is connected to the PET detector. This can simplify the structure of the PET device and prevent the external cable from obstructing the installation of the PET detector and the MR device during the installation of the PET device. This can improve the installation effect and efficiency of the PET detector and the installation efficiency of the PET device. Correspondingly, when the PET detector needs to be disassembled, the PET detector and the external cable can be disconnected via the connecting mechanism to prevent the PET detector and the external cable from obstructing each other during the disassembly process. In some embodiments, when the external cable is damaged, only the external cable can be replaced without disassembling the PET detector and the external cable together. This can reduce the maintenance difficulty and cost of the PET device and improve the maintenance efficiency of the PET device.

[0006] In some embodiments, the interface component includes a power interface, and the connector component includes a power connector. One of the power interface and the power connector is disposed on the scanning tube and connected to the PET detector. The other of the power interface and the power connector is used to connect to an external power supply. The power interface and the power connector are connected to realize current conduction between the PET detector and the power supply.

[0007] In some embodiments, the power interface and the power connector are made of one or more of copper and aluminum.

[0008] In some embodiments, the power interface has a connection port, and the material of the connection port includes copper alloy; the power connector has a connection terminal, and the material of the connection terminal includes copper alloy.

[0009] In some embodiments, the power connector connected to the external power supply also includes two connecting screws set at intervals, and the connecting terminal is arranged between the two connecting screws; or the power interface connected to the external power supply also includes two connecting screws set at intervals, and the connection port is arranged between the two connecting screws.

[0010] In some embodiments, a cooling pipeline is provided on the scanning tube, and the cooling pipeline is used to cool the PET detector;

[0011] The interface component includes a water cooling interface, and the joint component includes a water cooling joint. One of the water cooling interface and the water cooling joint is arranged on the scanning tube and connected to the cooling pipeline, and the other of the water cooling interface and the water cooling joint is used to connect to an external water cooling pipeline.

[0012] In some embodiments, the water cooling interface and the water cooling joint are both made of non-magnetic materials.

[0013] In some embodiments, a first elastic self-locking structure is provided between the water-cooling interface and the water-cooling joint.

[0014] In some embodiments, the interface component includes a communication interface, and the connector component includes a communication connector. One of the communication interface and the communication connector is disposed on the scanning tube and connected to the PET detector. The other of the communication interface and the communication connector is used to connect to the communication optical fiber of an external optical fiber module. The communication interface and the communication connector are connected to realize signal transmission between the PET detector and the external optical fiber module.

[0015] In some embodiments, the communication interface and the communication connector are made of one or more of copper and aluminum.

[0016] In some embodiments, a second elastic self-locking structure is provided between the communication interface and the communication connector.

[0017] In some embodiments, an optical transceiver module is disposed in the communication connector, and the optical transceiver module is coated with a metal layer.

[0018] An embodiment of the second aspect of the present application provides a PET-MR system, comprising an MR device and the PET device of any of the above embodiments, wherein the MR device is detachably connected to the PET device; wherein the axis of the scanning cavity of the MR device coincides with the axis of the scanning tube of the PET device.

[0019] In the PET device included in the PET-MR system provided in the embodiment of the present application, the PET detector and the external cable are detachably connected via a connecting mechanism. The PET detector can be first inserted into the scanning cavity of the MR device, and then the external cable can be connected to the PET detector. This can simplify the structure of the PET device and prevent the external cable from obstructing the installation of the PET detector and the MR device during the installation of the PET device. This can improve the installation effect and efficiency of the PET detector, and improve the installation efficiency of the PET device. Correspondingly, when the PET detector needs to be disassembled, the PET detector and the external cable can be disconnected by the connecting mechanism first, so as to prevent the PET detector and the external cable from obstructing each other during the disassembly process. In some embodiments, when the external cable is damaged, only the external cable can be replaced without disassembling the PET detector and the external cable together. This can reduce the maintenance difficulty and cost of the PET device and improve the maintenance efficiency of the PET device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a simplified schematic diagram of a PET device in one embodiment of the present application.

[0021] Figure 2 It is a schematic structural diagram of a PET device in another embodiment of the present application.

[0022] Figure 3 for Figure 2 Magnified view of area A in the middle.

[0023] Figure 4 Schematic diagram of the structure of a joint assembly in one embodiment of the present application.

[0024] Figure 5 It is a simplified schematic diagram of a PET-MR system in one embodiment of the present application.

[0025] Figure numerals: PET-MR system-100, PET device-10, scanning tube-1, PET detector-2, external cable-3, interface assembly-4, power interface-41, water cooling interface-42, communication interface-43, connector assembly-5, power connector-51, connecting terminal-511, connecting screw-512, water cooling connector-52, water cooling pipe-521, communication connector-53, communication optical fiber-531, MR device-20. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0029] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0030] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0031] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0032] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0033] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0034] PET-MR equipment is a nuclear medicine molecular imaging device that organically combines PET (positron emission tomography) and MR (magnetic resonance) imaging. It can complete PET and MR examinations at the same time, and has the advantages of MR examinations and the advantages of PET technology. In related technologies, PET equipment and MR equipment are generally assembled as an inseparable whole. For scenarios where only MR scanning is required, the equipment cost is high. In addition, the PET equipment itself will take up a certain amount of space, which is not conducive to the space utilization of MR equipment. In addition, the number of connecting cables on the PET equipment is large and the size is large, which makes it difficult to assemble and connect the PET equipment and the MR equipment, and the PET-MR equipment is inconvenient to maintain.

[0035] Based on the above problems, the present application provides a PET device and a PET-MR system, which can simplify the structure of the PET device and improve the efficiency of disassembly and assembly of the PET device.

[0036] The embodiment of the first aspect of the present application provides a PET device 10 for detachably connecting to an MR device. In some embodiments, the MR device is a complete device that can independently perform MR imaging. In some embodiments, the MR device is a high-field magnetic resonance imaging device, for example, the magnetic field strength is 9.4T, 11.4T. In some embodiments, the MR device is a magnetic resonance imaging device for animal imaging, which is generally used in life science research and can be used to perform animal experiments using experimental mice. In some embodiments, the MR device includes a magnet and a gradient coil, the center of the magnet has a cavity, the gradient coil is assembled in the cavity, the center of the gradient coil has a scanning cavity, and the scanning cavity can be used to scan the object to insert and perform magnetic resonance imaging.

[0037] like Figures 1 to 3As shown, in some embodiments, the PET device 10 includes a scanning tube 1, a PET detector 2 and a connecting mechanism, wherein the PET detector 2 is arranged along the circumference of the scanning tube 1; the connecting mechanism includes a detachably connected interface component 4 and a connector component 5, one of the interface component 4 and the connector component 5 is arranged on the scanning tube 1, and the other of the interface component 4 and the connector component 5 is used to connect to an external cable 3.

[0038] It should be noted that if the interface component 4 and the connector component 5 are used to transmit electrical signals or communication signals, then the interface component 4 or the connector component 5 provided on the scanning tube 1 is electrically connected to the PET detector 2 .

[0039] In the embodiment of the present application, the PET detector 2 and the external cable 3 are detachably connected through a connecting mechanism. The PET detector 2 can be inserted into the scanning cavity of the MR device first, and then the external cable 3 can be connected to the PET detector 2. This can simplify the structure of the PET device 10, avoid the external cable 3 hindering the installation of the PET detector 2 and the MR device during the installation of the PET device 10, and improve the installation effect and efficiency of the PET detector 2, and improve the installation efficiency of the PET device 10. Correspondingly, when the PET detector 2 needs to be disassembled, the PET detector 2 and the external cable 3 can be disconnected by the connecting mechanism first, so as to avoid the PET detector 2 and the external cable from hindering each other during the disassembly process. In some embodiments, when the external cable is damaged, only the external cable 3 can be replaced without disassembling the PET detector 2 and the external cable 3 together, which can reduce the maintenance difficulty and maintenance cost of the PET device 10 and improve the maintenance efficiency of the PET device 10.

[0040] In some embodiments, Figures 1 to 3 As shown, the interface assembly 4 includes a power interface 41, and the connector assembly 5 includes a power connector 51. One of the power interface 41 and the power connector 51 is provided on the scanning tube 1 and connected to the PET detector 2. The other of the power interface 41 and the power connector 51 is used to connect to an external power source. The power interface 41 and the power connector 51 are connected to achieve current conduction between the PET detector 2 and the power source. The external cable 3 includes wires, and the PET detector 2 is connected to the external power source through the power interface 41, the power connector 51 and the wires.

[0041] In some embodiments, the material of the power interface 41 and the power connector 51 includes one or more of copper and aluminum, that is, the power interface 41 and the power connector 51 are both weakly magnetic materials, so that the power interface 41 and the power connector 51 can be used in a magnetic resonance environment to avoid affecting other structures of the PET device 10 and ensure the working safety of the PET device 10.

[0042] In some embodiments, the power interface 41 has a connection port, and the material of the connection port includes copper alloy; Figure 4 As shown, the power connector 51 has a connecting terminal 511, and the material of the connecting terminal 511 includes copper alloy, which is a non-magnetic conductive material, so that the power interface 41 and the power connector 51 can be used in a magnetic resonance environment, which can avoid affecting other structures of the PET device 10. While ensuring the working safety of the PET device 10, it is ensured that there is excellent conductivity between the power interface 41 and the power connector 51, thereby improving the connection stability and safety of the PET device 10 and the external power supply.

[0043] In some embodiments, Figure 4 As shown, the power connector 51 connected to the external power source further includes two connection screws 512 arranged at intervals, and the connection terminal 511 is arranged between the two connection screws 512; or the power interface 41 connected to the external power source further includes two connection screws 512 arranged at intervals, and the connection port is arranged between the two connection screws 512. The connection screws 512 can improve the connection stability between the power interface 41 and the power connector 51, improve the vibration resistance of the connection mechanism, thereby improving the stability of the current transmission between the external power source and the PET device 10, and improving the reliability of the PET device 10. The connection screws 512 are also made of weak magnetic material, so that they can be used in a magnetic resonance environment, avoid affecting other structures of the PET device 10, and ensure the working safety of the PET device 10.

[0044] In some embodiments, Figure 3 and Figure 4 As shown, a cooling pipeline (not shown) is provided on the scanning barrel 1, and the cooling pipeline is used to cool the PET detector 2. The interface component 4 includes a water cooling interface 42, and the joint component 5 includes a water cooling joint 52. One of the water cooling interface 42 and the water cooling joint 52 is provided on the scanning barrel 1 and connected to the cooling pipeline, and the other of the water cooling interface 42 and the water cooling joint 52 is used to connect to an external water cooling pipe 521. The water cooling interface 42 and the water cooling joint 52 are connected to realize heat exchange between the heat exchange medium in the water cooling pipe 521 and the PET detector 2, thereby realizing heat dissipation and cooling of the PET detector 2.

[0045] In some embodiments, the water-cooling interface 42 and the water-cooling joint 52 are both made of non-magnetic materials, so that the water-cooling interface 42 and the water-cooling joint 52 can be used in a magnetic resonance environment, avoiding affecting other structures of the PET device 10 and ensuring the working safety of the PET device 10. Non-magnetic materials include copper alloys, ceramics, and non-magnetic steel.

[0046] In some embodiments, a first elastic self-locking structure is provided between the water-cooling interface 42 and the water-cooling joint 52, and the first elastic self-locking structure may include a first elastic member and a first elastic groove that are engaged with each other, one of the first elastic member and the first elastic groove is provided on the inner wall of the water-cooling interface 42, and the other of the first elastic member and the first elastic groove is provided on the outer wall of the water-cooling joint 52. The first elastic member includes but is not limited to a spring, a spring, a clamping claw, a protrusion, and a self-locking nut. The first elastic self-locking structure can improve the connection stability and safety of the water-cooling interface 42 and the water-cooling joint 52, and improve the reliability of the PET device 10.

[0047] In some embodiments, Figure 3 and Figure 4 As shown, the interface component 4 includes a communication interface 43, and the connector component 5 includes a communication connector 53. One of the communication interface 43 and the communication connector 53 is arranged on the scanning tube 1 and connected to the PET detector 2. The other of the communication interface 43 and the communication connector 53 is used to connect to the communication optical fiber 531 of the external optical fiber module. The communication interface 43 and the communication connector 53 are connected to realize signal transmission between the PET detector 2 and the external optical fiber module.

[0048] In some embodiments, the material of the communication interface 43 and the communication connector 53 includes one or more of copper and aluminum, that is, the communication interface 43 and the communication connector 53 are made of weak magnetic materials, so that the communication interface 43 and the communication connector 53 can be used in a magnetic resonance environment to avoid affecting other structures of the PET device 10 and ensure the working safety of the PET device 10.

[0049] In some embodiments, a second elastic self-locking structure is provided between the communication interface 43 and the communication connector 53. The second elastic self-locking structure may include a second elastic member and a second elastic groove that engage with each other, one of the second elastic member and the second elastic groove being provided on the inner wall of the communication interface 43, and the other of the second elastic member and the second elastic groove being provided on the outer wall of the communication connector 53. The second elastic member includes but is not limited to a spring, a spring, a clamping claw, a protrusion, and a self-locking nut. The second elastic self-locking structure can improve the connection stability between the communication interface 43 and the communication connector 53, improve the stability of the communication connection between the PET detector 2 and the external optical fiber module, and improve the reliability of the PET device 10.

[0050] In some embodiments, an optical transceiver module is disposed in the communication connector 53, and the optical transceiver module is coated with a metal layer, which can enhance the anti-electromagnetic interference capability of the optical transceiver module, improve the stability and security of the communication connection between the PET detector 2 and the external optical fiber module, and improve the reliability of the PET device 10. The optical transceiver module can be a dual-fiber bidirectional ultra-short optical transceiver module.

[0051] Reference Figure 5As shown, the embodiment of the second aspect of the present application provides a PET-MR system 100, including an MR device 20 and a PET device 10 in any of the above embodiments, and the PET device 10 and the MR device 20 are detachably connected. The PET device 10 utilizes the positrons of the radioactive tracer to combine with the negative electrons in the body to release gamma rays, and collects these gamma rays to obtain the distribution of the tracer in the body; the MR device 20 excites the hydrogen nuclei in the body through magnetic fields and radio frequency pulses, causing them to resonate and release energy, which is converted into signals in the MR device 20 and formed into images after processing. Among them, the axis of the scanning cavity of the MR device 20 coincides with the axis of the scanning tube of the PET device 10.

[0052] In some embodiments, the MR device 20 is a complete device that can independently perform MR imaging. In some embodiments, the MR device 20 is a high-field magnetic resonance imaging device, for example, the magnetic field strength is 9.4T, 11.4T. In some embodiments, the MR device 20 is a magnetic resonance imaging device for animal imaging, and the MR device 20 is generally used in life science research, and animal experiments can be performed using experimental mice. In some embodiments, the MR device 20 includes a magnet and a gradient coil, the center of the magnet has a cavity, the gradient coil is assembled in the cavity, the center of the gradient coil has a scanning cavity, and the scanning cavity can be used to scan the object to insert and perform magnetic resonance imaging.

[0053] In the embodiment of the present application, the PET detector 2 and the external cable 3 are detachably connected through a connecting mechanism. The PET detector 2 can be inserted into the scanning cavity of the MR device 20 first, and then the external cable 3 can be connected to the PET detector 2. This can simplify the structure of the PET device 10, avoid the external cable 3 from obstructing the installation of the PET detector 2 and the MR device 20 during the installation of the PET device 10, and improve the installation effect and efficiency of the PET detector 2, and improve the installation efficiency of the PET device 10. Correspondingly, when the PET detector 2 needs to be disassembled, the PET detector 2 and the external cable 3 can be disconnected by the connecting mechanism first, so as to avoid the PET detector 2 and the external cable from obstructing each other during the disassembly process. In some embodiments, when the external cable is damaged, only the external cable 3 can be replaced without disassembling the PET detector 2 and the external cable 3 together, which can reduce the maintenance difficulty and maintenance cost of the PET device 10 and improve the maintenance efficiency of the PET device 10.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A PET device, characterized in that: The PET device (10) is used for being detachably connected to the MR device, and the PET device (10) comprises: Scanning tube (1); A PET detector (2) is arranged along the circumference of the scanning tube (1); The connection mechanism comprises a detachably connected interface component (4) and a joint component (5), wherein one of the interface component (4) and the joint component (5) is arranged on the scanning cylinder (1), and the other of the interface component (4) and the joint component (5) is used to connect to an external cable (3).

2. The PET device according to claim 1, characterized in that The interface component (4) comprises a power interface (41), and the connector component (5) comprises a power connector (51). One of the power interface (41) and the power connector (51) is arranged on the scanning tube (1) and connected to the PET detector (2). The other of the power interface (41) and the power connector (51) is used to connect to an external power source. The power interface (41) and the power connector (51) are connected to realize current conduction between the PET detector (2) and the external power source.

3. The PET device according to claim 2, characterized in that The material of the power interface (41) and the power connector (51) includes one or more of copper and aluminum.

4. The PET device according to claim 2, characterized in that The power interface (41) has a connection port, the material of the connection port includes copper alloy; the power connector (51) has a connection terminal (511), the material of the connection terminal includes copper alloy.

5. The PET device according to claim 4, characterized in that The power connector (51) connected to the external power source further comprises two connection screws (512) arranged at intervals, and the connection terminal (511) is arranged between the two connection screws (512); or The power interface (41) connected to the external power source further comprises two connection screws arranged at intervals, and the connection port is arranged between the two connection screws.

6. The PET device according to claim 1, characterized in that The scanning tube (1) is provided with a cooling pipeline, and the cooling pipeline is used to cool the PET detector (2); The interface assembly (4) comprises a water cooling interface (42), and the joint assembly (5) comprises a water cooling joint (52). One of the water cooling interface (42) and the water cooling joint (52) is arranged on the scanning tube (1) and connected to the cooling pipeline, and the other of the water cooling interface (42) and the water cooling joint (52) is used to connect to an external water cooling pipeline (521).

7. The PET device according to claim 6, characterized in that The water cooling interface (42) and the water cooling joint (52) are both made of non-magnetic materials.

8. The PET device according to claim 6, characterized in that A first elastic self-locking structure is provided between the water cooling interface (42) and the water cooling joint (52).

9. The PET device according to claim 1, characterized in that The interface component (4) comprises a communication interface (43), and the connector component (5) comprises a communication connector (53). One of the communication interface (43) and the communication connector (53) is arranged on the scanning tube (1) and connected to the PET detector (2). The other of the communication interface (43) and the communication connector (53) is used to connect to a communication optical fiber (531) of an external optical fiber module. The communication interface (43) and the communication connector (53) are connected to realize signal transmission between the PET detector (2) and the external optical fiber module.

10. The PET device according to claim 9, characterized in that The material of the communication interface (43) and the communication connector (53) includes one or more of copper and aluminum.

11. The PET device according to claim 9, characterized in that A second elastic self-locking structure is provided between the communication interface (43) and the communication connector (53).

12. The PET device according to claim 9, characterized in that An optical transceiver module is arranged inside the communication connector (53), and the optical transceiver module is coated with a metal layer.

13. A PET-MR system, characterized in that: The invention comprises an MR device (20) and a PET device (10) as claimed in any one of claims 1 to 12, wherein the MR device (20) is detachably connected to the PET device; wherein the axis of the scanning cavity of the MR device (20) coincides with the axis of the scanning tube of the PET device (10).

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