A detector installation and positioning device

Abstract

The present invention discloses a detector installation and positioning device, which includes a base, a positioning frame and a positioner. The upper surface of the base is provided with a base groove, which extends from the upper surface of the base to the inside of the base; the positioning frame is movably installed on the upper surface of the base, and the positioning frame has a positioning hole, the shape of which matches the base groove; the positioner has a columnar insertion portion. The present invention clips a connecting plate into the installation space of the detector and keeps the position fixed through the cooperation of the positioning frame and the positioner, thereby preventing displacement and sliding during installation, and can quickly and accurately fix the arranged detectors into a whole through the connecting plate, which is easy to operate and is conducive to improving the assembly quality of the detector module.

Description

Technical Field

[0001] The invention relates to a scintillation crystal installation auxiliary tool, and more particularly to a detector installation and positioning device. Background Art

[0002] PET (Positron Emission Tomography, hereinafter referred to as PET) is a large-scale, cutting-edge nuclear medicine imaging device. Its imaging principle is to inject a biologically active and radioactive tracer into the living body. The tracer participates in the metabolism of the living body. With different metabolic levels, the tracer presents different distributions in the living body, and then the distribution of the tracer in the living body is imaged. PET can non-invasively, quantitatively and dynamically evaluate the metabolic levels, biochemical reactions and functional activities of various organs in the living body at the cellular level, so it can detect related biochemical changes before many diseases cause structural changes or worsening of symptoms. PET has great and unique application value for the diagnosis and treatment of major diseases, especially for the diagnosis and treatment of tumors, cardiovascular diseases and nervous system diseases in clinical practice.

[0003] Currently in the field of PET research, the structural layout of PET has changed from annular PET systems, flat-plate PET systems, two-dimensional annular heterogeneous detector PET systems, etc. to application-adaptive PET systems. The application-adaptive PET system (CN101856236A) uses different detector modules for combination and construction, which can significantly reduce the system cost while meeting the imaging requirements of a specific area. When building an application-adaptive PET system, it is necessary to classify a large number of detectors, select a certain number of detectors, first assemble them into detector modules, and then install multiple detector modules on the PET frame to form a ring structure.

[0004] However, in order to achieve comprehensive detection of gamma photons, the detectors in the detector module are required to be arranged as closely as possible. At the same time, in order to facilitate assembly, the arranged detectors need to be fixed as a whole through a connecting plate. In actual operation, the assembly quality of the detector module will directly affect the use effect of the equipment. In addition, in actual use, since the scintillation crystals used to make detectors are fragile and expensive, additional losses are inevitable during the assembly process, which will cause huge maintenance costs. Therefore, it is necessary to provide a safe, fast and accurate detector installation tool to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a detector installation and positioning device to solve at least one of the above problems.

[0006] In order to solve the above technical problems, the technical solution of the present invention is to provide a detector installation and positioning device, which includes a base, a positioning frame and a positioner. The upper surface of the base is provided with a base groove, and the base groove extends from the upper surface of the base to the inside of the base; the positioning frame is movably installed on the upper surface of the base, and the positioning frame has a positioning hole, and the shape of the positioning hole matches the base groove; the positioner has a columnar insertion portion.

[0007] According to an embodiment of the present invention, the base has an upper surface and a lower surface which are parallel to each other, and an area of ​​the lower surface is larger than an area of ​​the upper surface.

[0008] According to one embodiment of the present invention, the base is a prism or a cone.

[0009] According to an embodiment of the present invention, the base groove and the positioning hole are both in a rectangular shape and have the same cross-sectional area.

[0010] According to an embodiment of the present invention, the positioning frame is a rectangular frame structure, and the lower surface of the positioning frame is tightly fitted with the upper surface of the base.

[0011] According to an embodiment of the present invention, there are two positioners in total, which are inserted into the mounting holes on the detector and the corresponding connecting plate holes on the connecting plate when in use.

[0012] According to one embodiment of the present invention, the positioner is an inverted U-shaped column.

[0013] According to one embodiment of the present invention, one end of the inverted U-shaped column can be movably inserted into the upper surface of the positioning frame, and the other end of the inverted U-shaped column is inserted into the mounting hole on the detector and the corresponding connecting plate hole on the connecting plate when in use.

[0014] The detector installation and positioning device provided by the present invention can arrange multiple detectors as closely as possible by matching the size of the base groove and the detector. The connection plate is inserted into the installation space of the detector and kept in a fixed position through the cooperation of the positioning frame and the positioner, which prevents displacement and sliding during installation. The arranged detectors can be quickly and accurately fixed into a whole through the connection plate. The operation is simple and conducive to improving the assembly quality of the detector module. In addition, in actual use, the scintillation crystal of the detector is wrapped by the base groove and the positioning hole, which avoids accidental damage such as bumps and collisions during the installation process, which is conducive to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 is a three-dimensional schematic diagram of a detector of a detector installation and positioning device according to an embodiment of the present invention;

[0017] Figure 2 is a plan view of a detector module of a detector installation and positioning device according to an embodiment of the present invention;

[0018] Figure 3 is an exploded schematic diagram of a detector installation and positioning device according to an embodiment of the present invention;

[0019] Figure 4 is a three-dimensional schematic diagram of a detector installation and positioning device according to an embodiment of the present invention, wherein the detector module has been placed in the detector installation and positioning device;

[0020] Figure 5 is based on Figure 4 A schematic cross-sectional view of the detector installation and positioning device of an embodiment, wherein the detector module has been placed in the detector installation and positioning device. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific examples. It should be understood that the following examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0022] It should be noted that when a component / part is referred to as being "set on" another component / part, it may be directly set on the other component / part or there may also be an intermediate component / part. When a component / part is referred to as being "connected / coupled" to another component / part, it may be directly connected / coupled to the other component / part or there may be an intermediate component / part at the same time. The term "connection / coupling" as used herein may include electrical and / or mechanical physical connections / couplings. The term "includes / comprising" as used herein refers to the presence of a feature, step or component / part, but does not exclude the presence or addition of one or more other features, steps or components / parts. The term "and / or" as used herein includes any and all combinations of one or more relevant listed items.

[0023] 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 are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] In addition, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0025] Figure 1 is a three-dimensional schematic diagram of a crystal module of a detector installation and positioning device according to an embodiment of the present invention, comprising Figure 1 It can be seen that the detector installation and positioning device provided by the present invention is mainly aimed at Figure 1 The detector 10 shown in the figure comprises a scintillation crystal 11, a photoelectric conversion device 12 and a digital conversion plug 14, wherein the scintillation crystal 11 is coupled with the photoelectric conversion device 12, the scintillation crystal 11 can convert the detected invisible high-energy particles into visible light, the photoelectric conversion device 12 can convert the visible light into an electrical signal, and two digital conversion plugs 14 arranged in parallel with each other are respectively connected to the photoelectric conversion device 12 to output the electrical signal converted by the photoelectric conversion device 12 for data acquisition processing. Further, in order to facilitate the assembly of multiple detectors 10, the detector 10 also comprises a detector plate 13, the detector plate 13 is arranged on the digital conversion plug 14 and is parallel to the plane where the photoelectric conversion device 12 is located, so that the digital conversion plug 14, the photoelectric conversion device 12 and the detector plate 13 form a through installation space 16, and the detector plate 13 is also provided with a plurality of installation holes 15, and the installation holes 15 can be evenly spaced along the extension direction of the installation space 17, or can be individually arranged on the detector plate 13. Those skilled in the art should understand that the installation between the digital conversion plug 14 and the detector plate 13 can also take another form. For example, the detector plate 13 and the photoelectric conversion device 12 which are parallel to each other are first connected through two adapter plugs, and then further connected to the adapter plug through the digital conversion plug 14 to transmit signals, thereby facilitating the assembly between the components. Those skilled in the art only need to ensure that the installation space 16 is formed between the detector plate 13 and the photoelectric conversion device 12, which will not be repeated here.

[0026] Figure 2 is a plan view of a crystal module of a detector installation and positioning device according to an embodiment of the present invention, comprising Figure 2 It can be seen that in order to conveniently and quickly assemble a PET system suitable for application, it is necessary to combine several detectors 10 ( Figure 2The detector modules are arranged closely together and fixed to form a detector module, and then several detector modules are installed on the PET frame to complete the formation of the PET detector ring.

[0027] Figure 3 is an exploded schematic diagram of a detector installation and positioning device according to an embodiment of the present invention, comprising Figure 3 It can be known that the detector installation and positioning device provided by the present invention includes at least a base 20 and a positioning frame 40, wherein the base 20 has a base upper surface and a base lower surface parallel to each other, and the body 21 of the base 20 can be set to a prism or a cone shape for stable placement. A base groove 22 is also provided on the base 20, and the base groove 22 extends from the upper surface of the base to the inside of the base body 21. The shape of the base groove 22 needs to match the shape of the detector 10. For example, when the scintillation crystal 11 and the photoelectric conversion device 12 in the detector 10 are both rectangular prisms, the shape of the base groove 22 is also a rectangular prism of the same size or slightly larger size, so as to facilitate the smooth placement of multiple detectors 10 in the base groove 22.

[0028] The connecting plate 30 is in the shape of a long strip, and a plurality of connecting plate holes 31 are arranged on the connecting plate 30. The spacing between the connecting plate holes 31 corresponds to the position and spacing of the mounting holes 15 on the detector 10. For example, when the detector module to be assembled includes four detectors 10, if two mounting holes 15 are arranged on each detector, eight connecting plate holes 31 are correspondingly arranged on the connecting plate 30, and the position of each connecting plate hole 31 corresponds one by one to the position of the mounting hole 15 when the organization is completed.

[0029] Preferably, the length of the connecting plate 30 is consistent with the overall length of several detectors 10 to be assembled. For example, when the detector module to be assembled includes four detectors, the length of the connecting plate 30 is equal to the overall length of the four detectors 10, and the mounting hole 15 is the same size as the connecting plate hole 31 and both are threaded holes to facilitate fixing the connecting plate 30 and the detector plate 13 together by screws.

[0030] The positioning frame 42 includes a positioning frame body 41 and a positioner 42, wherein the positioning frame body 41 is in a frame shape, and the upper and lower surfaces of the positioning frame 41 are preferably parallel to each other and smooth and flat, and a positioning hole 43 is formed inside the frame. The shape of the positioning hole 43 matches the shape of the detector 10 and the base groove 22. For example, when the base groove 22 is a rectangular parallelepiped, the shape of the positioning hole 43 is also the same rectangular parallelepiped shape. At the same time, the length of the positioning hole 43 is the same as the length of the connecting plate 30, so that it is convenient to clamp multiple detectors 10 on the one hand, and to clamp the connecting plate 30 placed in the installation space 16 on the other hand.

[0031] Two opposite locators 42 are also provided on the upper surfaces of the two opposite sides of the positioning frame 40. Figure 3 In the embodiment, the positioner 42 is in the shape of an inverted U-shaped column, one end of the positioner 42 is movably fixed on the positioning frame body 41, and the other end of the positioner 42 can be inserted into the mounting hole 15 and the connecting plate hole 31. It should be noted by those skilled in the art that the positioner 42 can also be in the shape of a single column. When the connecting plate 30 is placed in the installation space 16 and is stuck by the positioning frame body 41, two positioners 42 can be placed in any two pairs of mounting holes 15 and the connecting plate hole 31, so that the connecting plate 30 is relatively fixed in the installation space 16; the positioner 42 can also be set in only an inverted U shape, and the two ends of the inverted U shape are respectively inserted into the mounting holes 15 on the two adjacent detectors 10 and the corresponding connecting plate holes 31 to fix the position of the connecting plate 30. In short, the positioner 42 should be able to be inserted into any two mounting holes 15 of multiple detectors 10 and keep the connecting plate 30 relatively fixed in position to facilitate the installation of screws.

[0032] Figure 4 is a three-dimensional schematic diagram of a detector installation and positioning device according to an embodiment of the present invention, wherein the detector module has been placed in the detector installation and positioning device. Figure 5 is based on Figure 4 The schematic cross-sectional view of the detector installation and positioning device of the embodiment is composed of Figure 4 , Figure 5 Combination Figure 3 It can be seen that when the present invention is in use, the base 20 needs to be placed on the operating table first, and then the detectors 10 to be assembled are placed in the base grooves 22 in turn. Thereafter, the connecting plate 30 is passed through the installation space 16 of each detector 10 in turn, and then the positioning frame 40 is placed on the upper surface of the base 20. At this time, the connecting plate 30 is stuck by the positioning frame 40, and the locator on the positioning frame 40 is inserted into the mounting hole 15 on the detector 10 and the corresponding connecting plate hole 31, so that the position of the connecting plate 30 can be fixed and the connecting plate hole 31 can be made to correspond one by one with the mounting hole 15 of the detector. The operator only needs to screw the screws into the remaining mounting holes 15 in turn to fix the detector plate 13 and the connecting plate 30 together, and finally unplug the locator 31, and screw the screws into the mounting hole 15 where the locator 31 was originally located to complete the installation of the detector module.

[0033] The detector installation and positioning device provided by the present invention can arrange multiple detectors as closely as possible by matching the size of the base groove and the detector. The connection plate is inserted into the installation space of the detector and kept in a fixed position through the cooperation of the positioning frame and the positioner, which prevents displacement and sliding during installation. The arranged detectors can be quickly and accurately fixed into a whole through the connection plate. The operation is simple and conducive to improving the assembly quality of the detector module. In addition, in actual use, the scintillation crystal of the detector is wrapped by the base groove and the positioning hole, which avoids accidental damage such as bumps and collisions during the installation process, which is conducive to reducing costs.

[0034] The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above embodiment of the present invention can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the description of the present invention fall within the scope of protection of the claims of the present invention. The contents not described in detail in the present invention are all conventional technical contents.

Claims

1. A detector installation and positioning device, characterized in that: The detector installation and positioning device comprises: A base, wherein the upper surface of the base is provided with a base groove, and the base groove extends from the upper surface of the base toward the inside of the base; A positioning frame, which is movably mounted on the upper surface of the base, has a positioning hole, the shape of which matches the groove of the base, and covers a portion of all scintillation crystals; and The positioner is an inverted U-shaped column, one end of which can be movably inserted into the upper surface of the positioning frame, and the other end of which is inserted into the mounting hole on the detector and the corresponding connecting plate hole on the connecting plate when in use.

2. The detector installation and positioning device according to claim 1, characterized in that: The base has an upper surface and a lower surface which are parallel to each other, and an area of ​​the lower surface is larger than an area of ​​the upper surface.

3. The detector installation and positioning device according to claim 1, characterized in that: The base is a prism or a cone.

4. The detector installation and positioning device according to claim 1, characterized in that: The base groove and the positioning hole are both in a rectangular shape and have the same cross-sectional area.

5. The detector installation and positioning device according to claim 1, characterized in that: The positioning frame is a rectangular frame structure, and the lower surface of the positioning frame is tightly fitted with the upper surface of the base.

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