Positioning device

Abstract

The utility model discloses a positioning device, and belongs to the technical field of medical instruments. A developing body for developing in the positioning device can be in a solid state. In the process of implementing nuclear magnetic resonance imaging, the magnetic moments of electrons in the solid-state developing body in the positioning device can be influenced to be rearranged or changed in a specific magnetic field environment. The change can promote electrons to generate or influence high-frequency electromagnetic signals in the surrounding environment, so that the imaging result is clearer and more accurate. Besides, as the developing body in the positioning device is in a solid state, compared with a liquid developing body, the solid developing body is easier to package and is not easy to leak, so that the distortion of a developed image caused by packaging defects can be reduced, and the focus can be more accurately positioned by utilizing the solid developing body.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a positioning device. Background Art

[0002] With the continuous development of medical technology, more and more medical imaging equipment need to be equipped with radiation parts that can emit rays.

[0003] For example, medical imaging equipment using technologies such as computed tomography (CT), spectral CT, cone beam CT (CBCT), and magnetic resonance imaging (MRI) typically requires a positioning accessory encapsulated with liquid copper sulfate to assist in locating the patient's lesion, thereby determining the relative position of the patient's lesion within the medical imaging equipment.

[0004] However, it is difficult for current positioning accessories to effectively encapsulate liquid copper sulfate. The liquid sulfuric acid in the positioning accessories is highly volatile and prone to leakage and other adverse phenomena, which in turn leads to the low reliability of current medical imaging equipment. Utility Model Content

[0005] The present invention provides a positioning device that can solve the problem of difficult packaging of liquid copper sulfate in existing medical imaging equipment. The technical solution is as follows:

[0006] In one aspect, a positioning device is provided. The positioning device has a solid developing body, and the developing body is used for development.

[0007] Optionally, the developer is a solid structure made of ceramics. For example, the developer can be a spherical structure or a rod-shaped structure made of ceramics.

[0008] Optionally, the positioning device further has an accommodating space for accommodating the developing body, and the developing body abuts against an inner wall of the accommodating space.

[0009] Optionally, the positioning device includes a head nail, and the developing body is arranged at the tail of the head nail.

[0010] Optionally, the positioning device also includes: a developing assembly detachably connected to the head nail, the developing assembly including: a base body and an end cover, the base body and the end cover are used to enclose the accommodating space, one side of the developing body abuts against the base body, and the other side abuts against the end cover.

[0011] Optionally, the base body has a mounting groove, and at least a portion of the end cover extends into the mounting groove and is threadedly connected to the base body;

[0012] The developing body is located between the bottom surface of the mounting groove and the end surface of the end cover extending into the mounting groove, and the developing body abuts against the bottom surface of the mounting groove and the end surface of the end cover extending into the mounting groove respectively.

[0013] Optionally, the shape of the developing body in the positioning device can match the shape of the accommodating space. For example, the developing body is shaped like a sphere, the bottom surface of the mounting groove is a first curved surface that matches the shape of the sphere, and / or the end surface of the end cap that extends into the mounting groove is a second curved surface that matches the shape of the sphere.

[0014] Optionally, the positioning device includes: a marking plate assembly, the marking plate assembly including an inner marking plate, and an outer marking plate arranged opposite to the inner marking plate, grooves are respectively provided on the opposite surfaces of the inner marking plate and the outer marking plate, and the grooves are used to form the accommodating space.

[0015] Optionally, the shape of the developing body matches the shape of the inner groove surface of the groove.

[0016] Optionally, the inner marking plate and the outer marking plate are detachably connected via a fixing member.

[0017] Optionally, there are multiple marking plate assemblies, and the multiple marking plate assemblies are used to form a positioning frame.

[0018] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0019] A positioning device includes a solid-state developer for imaging. During magnetic resonance imaging (MRI), the solid-state developer in the positioning device is exposed to a specific magnetic field, causing the magnetic moments of its electrons to rearrange or change. This change can cause the electrons to generate or influence high-frequency electromagnetic signals in the surrounding environment. Through this interaction, the developer not only stimulates additional signals but also enhances the MRI signal returned by the tissue, effectively improving signal strength and image contrast. This, in turn, positively promotes the imaging process, resulting in clearer and more accurate imaging results. Furthermore, because the developer in the positioning device is solid, it is easier to package and less likely to leak than liquid developers, thus reducing distortion in the developed image caused by packaging defects. Consequently, this solid-state developer can more accurately locate lesions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 description of the embodiments. 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.

[0021] Figure 1 This is a schematic structural diagram of a positioning device provided in an embodiment of the present application;

[0022] Figure 2 is a structural diagram of another positioning device provided in an embodiment of the present application;

[0023] Figure 3 This is a structural diagram of another positioning device provided in an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of a positioning head frame structure provided in an embodiment of the present application;

[0025] Figure 5 is a cross-sectional view of a marking plate assembly provided in an embodiment of the present application;

[0026] Figure 6 This is an exploded view of a marking plate assembly provided in an embodiment of the present application;

[0027] Figure 7 This is a schematic diagram of the structure of an inner marking plate provided in an embodiment of the present application;

[0028] Figure 8 This is a schematic diagram of the structure of a developer provided in an embodiment of the present application;

[0029] Figure 9 This is a schematic diagram of a positioning head frame structure provided in an embodiment of the present application;

[0030] Figure 10 This is a structural schematic diagram of a positioning head frame provided in an embodiment of the present application from another perspective. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0032] Radiation therapy uses high-intensity radiation to precisely target and destroy cancer cells. With the continuous advancement of technology, the demand for precision in treatment is increasing. To ensure that the radiation emitted by the radiotherapy device accurately targets the lesion on the patient's head, ensuring that the radiation only hits the affected area and spares surrounding healthy tissue, extremely precise lesion localization technology is often required.

[0033] Existing localization technologies generally use magnetic resonance imaging. Although magnetic resonance imaging can show the unique morphology and signal intensity of lesions, in some cases, especially when complex or subtle lesions are involved and precise treatment planning (such as surgery or radiotherapy) is required, the appearance of the lesion itself on the magnetic resonance image is not sufficient to meet the precise positioning requirements of treatment.

[0034] The present invention provides a positioning device that can improve the positioning accuracy in radiotherapy. Figure 1 , Figure 1 1 is a schematic structural diagram of a positioning device provided in an embodiment of the present application. The positioning device may have a solid developer 100, and the developer 100 may be used for development.

[0035] For example, during MRI imaging, the solid-state imaging element 100 in the positioning device is exposed to a specific magnetic field, causing the magnetic moments of its electrons to rearrange or change. This change can cause the electrons to generate or influence high-frequency electromagnetic signals in the surrounding environment. Through this interaction, the imaging element 100 not only stimulates additional signals but also enhances the MRI signal returned by the tissue, effectively improving signal strength and image contrast. This, in turn, positively promotes the imaging process, resulting in clearer and more accurate imaging results.

[0036] In addition, since the developer 100 in the positioning device is solid, it is easier to package and less likely to leak than a liquid developer, thereby reducing the distortion of the developed image caused by packaging defects. The solid developer 100 can then be used to more accurately locate the lesion.

[0037] In summary, the present application proposes a positioning device having a solid-state developer that can be used for imaging. During the implementation of nuclear magnetic resonance imaging, the solid-state developer in the positioning device is exposed to a specific magnetic field environment, and the magnetic moment of the electrons within it will be affected and rearranged or changed. This change can cause the electrons to generate or influence high-frequency electromagnetic signals in the surrounding environment. Through this interaction, the developer can not only stimulate additional signals, but also enhance the nuclear magnetic resonance imaging signals returned by the tissue, thereby effectively improving the signal strength and image contrast, which can positively promote the imaging process and make the imaging results clearer and more accurate. In addition, because the developer in the positioning device is solid, it is easier to encapsulate and less likely to leak than a liquid developer, thereby reducing the distortion of the developed image caused by packaging defects. The solid-state developer can then be used to more accurately locate the lesion.

[0038] In the embodiment of the present application, the developing body 100 in the positioning device is a solid structure made of ceramic. For example, the developing body 100 can be a spherical structure or a rod-shaped structure made of ceramic.

[0039] In this case, since the ceramic material has high stability and its performance will not change due to temperature changes, pressure fluctuations or long-term storage, the solid developer 100 made of ceramic material can be stored for a long time and has a longer service life, reducing the need to frequently replace the developer 100.

[0040] Optional, such as Figure 1 As shown, the positioning device further comprises an accommodating space C for accommodating the developing body 100. The developing body 100 abuts against the inner wall of the accommodating space C.

[0041] In this case, by fixing the developing body 100 in the accommodating space C of the positioning device, and the developing body 100 is completely in contact with the inner wall of the accommodating space C, the developing body 100 can completely fill the accommodating space C in the positioning device, thereby avoiding the movement or shaking of the developing body 100 in the accommodating space C during use, and thus ensuring a better image display effect during the magnetic resonance imaging process.

[0042] In the embodiments of the present application, the positioning device can be used in different devices. For example, in one scenario, the positioning device can be used in a positioning head frame. In another scenario, the positioning device can be used in a positioning frame. To this end, the embodiments of the present application will be schematically explained using the following two scenarios as examples.

[0043] In the first case, when the positioning device is used in a scene where the positioning head frame is positioned, such as Figure 2 As shown, Figure 2 This is a structural diagram of another positioning device provided in an embodiment of the present application. The positioning device may include: a head pin 200 , and a developing body 100 in the positioning device is arranged at the tail of the head pin 200 .

[0044] In one possible implementation, Figure 2 As shown, the tail of the head nail 200 may have an accommodating space C, and the developing body 100 is disposed in the accommodating space C and abuts against the inner sidewall of the accommodating space C. In this case, the developing body 100 may be fixedly connected to the head nail 200 at the tail of the head nail 200 .

[0045] In another possible implementation, Figure 3 As shown, Figure 3is a schematic structural diagram of another positioning device provided in an embodiment of the present application. The positioning device may further include: a developing assembly 300 detachably connected to the head pin 200. For example, the developing assembly 300 may be detachably connected to the head pin 200 at the rear end of the head pin 200. The developing assembly 300 may have an accommodating space C, and the developing body 100 may be disposed within the accommodating space C and abut against the inner sidewall of the accommodating space C. In this case, the developing body 100 may be detachably connected to the head pin 200 at the rear end of the head pin 200 via the developing assembly 300.

[0046] For example, as shown in FIG3 , the developing assembly 300 may include a base body 301 and an end cover 302 , wherein the base body 301 and the end cover 302 are used to enclose an accommodating space C. One side of the developing body 100 in the positioning device abuts against the base body 301 , and the other side abuts against the end cover 302 .

[0047] In this case, the developing body 100 in the positioning device can be located between the base body 301 and the end cover 302, and the base body 301 and the end cover 302 can tightly fix the developing body 100 in the accommodating space C surrounded by the base body 301 and the end cover 302, so that the developing body 100 is not easy to move in the accommodating space C, thereby making the image quality of the magnetic resonance imaging higher.

[0048] In the embodiments of this application, Figure 3 As shown, the base body 301 in the developing assembly 300 may have a mounting slot L, and at least a portion of the end cap 302 may extend into the mounting slot L and be threadedly connected to the base body 301. That is, the end cap 302 and the base body 301 may be fastened together by a threaded connection to form an accommodating space C. In this case, after the developing body 100 is placed into the mounting slot L of the base body 301, at least a portion of the end cap 302 may be screwed into the mounting slot L of the base body 301, so that the end cap 302 and the base body 301 are tightly connected by a threaded fit. If it is necessary to replace the developing body 100 in the accommodating space C enclosed by the base body 301 and the end cap 302, the end cap 302 may be screwed out of the mounting slot L of the base body 301 to ensure that the developing body 100 located in the mounting slot L can be removed, thereby ensuring that a new developing body 100 can be subsequently reinstalled in the mounting slot L.

[0049] The developing body 100 in the positioning device is located between the bottom surface of the mounting groove L in the base body 301 and the end surface of the end cover 302 extending into the mounting groove L. The developing body 100 abuts against the bottom surface of the mounting groove L and the end surface of the end cover 302 extending into the mounting groove L, respectively. This ensures that the developing body 100 does not shift relative to the end cover 302 and the base body 301 within the accommodating space C, thereby improving positioning accuracy.

[0050] In the embodiment of the present application, the shape of the developing body 100 in the positioning device can match the shape of the accommodating space C. For example, the developing body 100 can be a sphere. In this case, the developing body 100 can be a spherical structure made of ceramic. The bottom surface of the mounting groove L in the base body 301 is a first curved surface (not shown) that matches the shape of the sphere, and / or the end surface of the end cap 302 that extends into the mounting groove L is a second curved surface (not shown) that matches the shape of the sphere.

[0051] For example, the bottom surface of the mounting groove L in the base body 301 has a first arc surface that matches the spherical shape of the developer 100, and the end surface of the end cover 302 extending into the mounting groove L has a second arc surface that matches the spherical shape.

[0052] In this case, the spherical shape of the developing body 100 in the developing assembly 300 completely aligns with the first curved surface of the bottom surface of the mounting slot L and the second curved surface of the end cap 302 extending into the mounting slot L, forming a multi-point support structure. This ensures that the developing body 100 is more firmly fixed within the accommodating space C. Even during external vibrations or operation, the movement and offset of the developing body 100 are greatly reduced, thereby improving the accuracy of lesion positioning during magnetic resonance imaging.

[0053] In the present application, the spherical developer 100 is a material that can be developed under nuclear magnetic resonance, preferably a ceramic bead.

[0054] For example, please refer to Figure 4 , Figure 4 It is a schematic diagram of the positioning head frame structure provided in an embodiment of the present application. The positioning head frame 001 may include a plurality of support poles 001A and a base ring 001B, and the plurality of support poles 001A are arranged at intervals along the circumference of the base ring 001B. Among them, the head pin 200 in the positioning device is located on the support pole 001A in the positioning head frame 001. For example, the number of the support poles 001A and the head pin 200 can be multiple, and the plurality of support poles 001A are arranged at intervals along the circumference of the base ring 001B, and the plurality of head pins 200 are arranged one-to-one on the plurality of support poles 001A. In the present application, the number of the support poles 001A and the developing assembly 300 are both four.

[0055] When in use, the patient lies flat on the examination bed, the operator places the positioning head frame 001 above the patient's head, and adjusts the head pin 200 in the positioning device so that the head pin 200 gradually aligns with the predetermined position of the head and is firmly fixed to the patient's head bones.

[0056] In the present application, the head pin 200 of the positioning device is generally made of an alloy material, which is usually invisible in a nuclear magnetic resonance image. The developer 100 in the positioning device can interact with the radiation. Under a specific magnetic field, the developer is affected by the magnetic field, and its electronic magnetic moment changes, exciting high-frequency electrons. At the same time, it receives feedback signals, which can enhance the signal strength, thereby leaving a clear and recognizable mark on the nuclear magnetic resonance image, and the position of each mark point on the image is known and fixed. In addition, the lesion will also show a unique shape or signal intensity on the nuclear magnetic resonance image, allowing doctors to identify the lesion. By comparing the positional relationship between the lesion and the surrounding developing mark points, the doctor can accurately measure the specific distance and direction of the lesion from each mark point on the developer 100. In this way, even if the lesion is very deep or very small, the position of the lesion can be "locked" through this precise positioning method.

[0057] In the second case, when the positioning device is used in the scene of positioning the frame, the positioning device may include: a marking plate assembly 400. Please refer to Figure 5 and Figure 6 , Figure 5 This is a cross-sectional view of a marking plate assembly provided in an embodiment of the present application. Figure 6 This is an exploded view of a marking plate assembly provided in an embodiment of the present application. Marking plate assembly 400 includes an inner marking plate 401 and an outer marking plate 402 disposed opposite inner marking plate 401. Grooves K are provided on opposing surfaces of inner marking plate 401 and outer marking plate 402, respectively. Grooves K provided on inner marking plate 401 and outer marking plate 402 can be used to form an accommodating space C.

[0058] The developing body 100 in the positioning device is located in the accommodating space C and abuts against the inner wall of the accommodating space C. In this case, by fixing the developing body 100 in the positioning device in the accommodating space C and completely abutting against the inner wall, it is ensured that the developing body 100 can completely fill the accommodating space C, reducing the probability of movement or shaking of the developing body 100 during use, thereby achieving better image display effects during magnetic resonance imaging and improving the accuracy of lesion positioning.

[0059] For example, the shape of the developing body 100 in the positioning device matches the inner groove surface of the groove K on the inner marking plate 401 and the outer marking plate 402. Thus, when the inner marking plate 401 and the outer marking plate 402 are closed, the grooves K on the two marking plates are precisely aligned in space, forming a continuous, enclosed accommodating space C. The shape of the developing body 100 matches the shape of the accommodating space C. This ensures that the developing body 100 is securely positioned in the accommodating space C.

[0060] In the present application, the accommodating space C defined by the grooves K provided on the inner marking plate 401 and the outer marking plate 402 can be channel-shaped. In this case, the accommodating space C is channel-shaped as a whole, and the developing body 100 can be rod-shaped. In other words, the developing body 100 can be a rod-shaped structure made of ceramic.

[0061] In the examples of this application, please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of an inner marking plate provided in an embodiment of the present application. Figure 8 The accommodating space C in the marking plate assembly 400 may include: a plurality of interconnected sub-channels 403 , and the developing body 100 in the positioning device may include: a plurality of separately arranged absorption rods 101 .

[0062] The multiple sub-channels 403 in the accommodating space C are arranged along the edges and diagonals of the marking plate in the marking plate assembly 400. Each sub-channel 403 corresponds one-to-one to a plurality of absorbent rods 101. Each absorbent rod 101 in the developing body 100 is located within a corresponding sub-channel 403 and abuts against the inner wall of the corresponding sub-channel 403. In other words, the accommodating space C is not a single channel, but rather consists of multiple small, interconnected sub-channels 403, each with a corresponding absorbent rod 101.

[0063] In this case, compared to a single-channel design, the structure of multiple sub-channels 403 can effectively utilize limited space and form more development interfaces, improving the ability to be used in confined spaces. In addition, because the multiple sub-channels 403 correspond one-to-one with the multiple absorbent rods 101, each absorbent rod 101 can be independently designed for its corresponding sub-channel 403. The size, shape, and material of the absorbent rod 101 can be customized according to actual needs, facilitating application in different scenarios.

[0064] For example, Figure 7As shown, the plurality of sub-channels 403 in the accommodating space C may include a first sub-channel 4031 and a second sub-channel 4032. The extension direction of the first sub-channel 4031 intersects with the extension direction of the second sub-channel 4032, and the first sub-channel 4031 and the second sub-channel 4032 are both arranged along the edge of the marking plate in the marking plate assembly 400. The first end of the first sub-channel 4031 is connected to the first end of the second sub-channel 4032.

[0065] In this application, if Figure 8 As shown, the plurality of absorption rods 101 in the developer 100 may further include: a first absorption rod 1011 located in the first sub-channel 4031 , and a second absorption rod 1012 located in the second sub-channel 4032 .

[0066] The first absorption rod 1011 has a first slope S1 at its end facing the first end of the first sub-channel 4031 , and the second absorption rod 1012 has a second slope S2 at its end facing the first end of the second sub-channel 4032 . The first slope S1 can abut against the second slope S2 .

[0067] In this case, the abutment between the first inclined surface S1 of the first absorption rod 1011 and the second inclined surface S2 of the second absorption rod 1012 can enhance the convenience of replacing and maintaining the absorption rod 101, so that technicians can more easily align and fix the new absorption rod 101 when replacing the absorption rod 101, without the need for complex tools or complicated steps, thereby improving the practicality and maintainability of the entire system.

[0068] In the embodiments of this application, Figure 7 As shown, the number of first subchannels 4031 and second subchannels 4032 in the plurality of subchannels 403 is two each. The two first subchannels 4031 are disposed opposite each other, while the two second subchannels 4032 are disposed opposite each other. The first end of a first subchannel 4031 communicates with the first end of one second subchannel 4032, and the second end of a first subchannel 4031 communicates with the second end of another second subchannel 4032. In other words, the two oppositely disposed first subchannels 4031 and the two oppositely disposed second subchannels 4032 are connected in sequence and continuously, forming a closed rectangular subchannel 403 structure.

[0069] The multiple sub-channels 403 in the accommodating space C may further include: a third sub-channel 4033, the third sub-channel 4033 is arranged along the diagonal direction of the marking plate in the marking plate assembly 400, and one end of the third sub-channel 4033 is connected to the second end of a first sub-channel 4031 and the second end of a second sub-channel 4032, and the other end of the third sub-channel 4033 is connected to the second end of another first sub-channel 4031 and the second end of another second sub-channel 4032; the multiple absorption rods 101 in the developer 100 may further include: a third absorption rod 1013 located in the third sub-channel 4033.

[0070] The end of the first absorption rod 1011 among the plurality of absorption rods 101 facing the second end of the first sub-channel 4031 has a third slope S3, and the end of the second absorption rod 1012 among the plurality of absorption rods 101 facing the second end of the second sub-channel 4032 has a fourth slope S4. The end of the third slope S3 has a fifth slope S5 and a sixth slope S6 disposed opposite each other, and the fifth slope S5 and the sixth slope S6 abut against the third slope S3 and the fourth slope S4, respectively.

[0071] In this case, the addition of the third subchannel 4033 within the accommodating space C and the addition of the third absorption rod 1013 to the multiple absorption rods 101 fully utilizes the internal space of the marking plate assembly 400, increases the contact area between the radiation and the developer 100, and improves the development efficiency, thereby significantly enhancing the development effect without significantly increasing the volume of the marking plate assembly 400. Furthermore, the mutual abutment of the third inclined surface S3, the fourth inclined surface S4, the fifth inclined surface S5, and the sixth inclined surface S6 not only ensures the secure positioning of the absorption rod 101 within its respective subchannel 403, but also strengthens the connection between the multiple absorption rods 101, improving the structural stability of the entire development assembly 300 and preventing misalignment due to vibration or external forces.

[0072] For example, the inner marking plate 401 and the outer marking plate 402 in the marking plate assembly 400 are detachably connected via fasteners. This allows the user to easily disassemble the marking plate assembly 400 for internal cleaning, maintenance, or replacement of the absorbent rod 101. This approach simplifies the maintenance process, eliminating the need for specialized tools and reducing maintenance costs and time.

[0073] In the examples of this application, please refer to Figure 9 , Figure 9 4 is a schematic diagram of a positioning head frame structure provided in an embodiment of the present application. The number of marking plate assemblies 400 can be multiple, and multiple marking plate assemblies 400 are used to form the positioning frame 002.

[0074] For examples, please refer to Figure 9 and Figure 10 , Figure 10 This is a schematic diagram of the structure of a positioning head frame provided by an embodiment of the present application from another perspective. The multiple marking plate assemblies 400 in the positioning head frame 002 include: a first marking plate assembly 400A, an oppositely positioned second marking plate assembly 400B and a fourth marking plate assembly 400D, and an oppositely positioned third marking plate assembly 400C and a fifth marking plate assembly 400E. The second marking plate assembly 400B, the third marking plate assembly 400C, the fourth marking plate assembly 400D, and the fifth marking plate assembly 400E can be respectively located at the four edges of the first marking plate assembly 400A.

[0075] The four edges of the first marking plate assembly 400A can be fixedly connected to the second marking plate assembly 400B, the third marking plate assembly 400C, the fourth marking plate assembly 400D, and the fifth marking plate assembly 400E via four first connecting portions 500. Furthermore, for the four marking plate assemblies surrounding the first marking plate assembly 400A, any two adjacent marking plate assemblies can be connected via second connecting portions 600. For example, the second marking plate assembly 400B can be connected to the third marking plate assembly 400C via one second connecting portion 600; the third marking plate assembly 400C can be connected to the fourth marking plate assembly 400D via another second connecting portion 600; the fourth marking plate assembly 400D can be connected to the fifth marking plate assembly 400E via yet another second connecting portion 600; and the fifth marking plate assembly 400E can be connected to the second marking plate assembly 400B via yet another second connecting portion 600.

[0076] During an MRI scan, the developer 100 in the marker plate assembly 400 appears as several dots in the MRI scanned image. The relationship between these dots can be used to infer the relationship between the scanned images in the spatial coordinate system, and calculations can be used to determine the angular and positional deviations between the images. The MRI positioning device uses this principle to register the MRI images and, through tomographic reconstruction, accurately construct a three-dimensional model of the lesion location as detected by the MRI scan.

[0077] In summary, the present application proposes a positioning device having a solid-state developer that can be used for imaging. During the implementation of nuclear magnetic resonance imaging, the solid-state developer in the positioning device is exposed to a specific magnetic field environment, and the magnetic moment of the electrons within it will be affected and rearranged or changed. This change can cause the electrons to generate or influence high-frequency electromagnetic signals in the surrounding environment. Through this interaction, the developer can not only stimulate additional signals, but also enhance the nuclear magnetic resonance imaging signals returned by the tissue, thereby effectively improving the signal strength and image contrast, which can positively promote the imaging process and make the imaging results clearer and more accurate. In addition, because the developer in the positioning device is solid, it is easier to encapsulate and less likely to leak than a liquid developer, thereby reducing the distortion of the developed image caused by packaging defects. The solid-state developer can then be used to more accurately locate the lesion.

[0078] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0079] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. 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 positioning device, characterized in that: The positioning device comprises a solid developing body (100), and the developing body (100) is used for developing; The positioning device comprises: a marking plate assembly (400), the marking plate assembly (400) comprising an inner marking plate (401) and an outer marking plate (402) arranged opposite to the inner marking plate (401), grooves (K) being respectively arranged on opposite surfaces of the inner marking plate (401) and the outer marking plate (402), the grooves (K) being used to form an accommodating space (C) for accommodating the developing body (100), and the developing body (100) abutting against an inner wall of the accommodating space (C); The accommodating space (C) in the marking plate assembly (400) includes: a plurality of interconnected sub-channels (403); the developing body (100) includes: a plurality of separately arranged absorption rods (101); The plurality of sub-channels (403) include: a first sub-channel (4031) and a second sub-channel (4032), wherein the extension direction of the first sub-channel (4031) intersects with the extension direction of the second sub-channel (4032), and the first sub-channel (4031) and the second sub-channel (4032) are both arranged along the edge of the marking plate in the marking plate assembly (400); the number of the first sub-channels (4031) and the second sub-channels (4032) in the plurality of sub-channels (403) is two, the two first sub-channels (4031) are arranged opposite to each other, and the two second sub-channels (4032) are arranged opposite to each other, the first end of the first sub-channel (4031) is connected to the first end of one of the second sub-channels (4032), and the second end of the first sub-channel (4031) is connected to the second end of another of the second sub-channels (4032); The plurality of absorption rods (101) include: a first absorption rod (1011) located in the first sub-channel (4031), and a second absorption rod (1012) located in the second sub-channel (4032); the end of the first absorption rod (1011) facing the first end of the first sub-channel (4031) has a first inclined surface (S1), and the end of the second absorption rod (1012) facing the first end of the second sub-channel (4032) has a second inclined surface (S2), and the first inclined surface (S1) abuts against the second inclined surface (S2); The plurality of sub-channels (403) further include: a third sub-channel (4033), the third sub-channel (4033) being arranged along a diagonal direction of the marking plate in the marking plate assembly (400), and one end of the third sub-channel (4033) being in communication with the second end of one of the first sub-channels (4031) and the second end of one of the second sub-channels (4032), and the other end of the third sub-channel (4033) being in communication with the second end of another of the first sub-channels (4031) and the second end of another of the second sub-channels (4032); The plurality of absorption rods (101) further include: a third absorption rod (1013) located in the third sub-channel (4033); the end of the first absorption rod (1011) facing the second end of the first sub-channel (4031) has a third inclined surface (S3), and the end of the second absorption rod (1012) facing the second end of the second sub-channel (4032) has a fourth inclined surface (S4); the end of the third absorption rod (1013) has a fifth inclined surface (S5) and a sixth inclined surface (S6) arranged opposite to each other, the fifth inclined surface (S5) abuts against the third inclined surface (S3), and the sixth inclined surface (S6) abuts against the fourth inclined surface (S4).

2. The positioning device according to claim 1, characterized in that The developer (100) is a solid structure made of ceramic.

3. The positioning device according to claim 1, characterized in that The shape of the developing body (100) matches the shape of the inner groove surface of the groove (K).

4. The positioning device according to claim 1, characterized in that The inner marking plate (401) and the outer marking plate (402) are detachably connected via a fixing member.

5. The positioning device according to claim 1, characterized in that There are multiple marking plate assemblies (400), and the multiple marking plate assemblies (400) are used to form a positioning frame (002).

Images