MR verification measurement die

Abstract

The utility model provides an MR verification measuring die. The MR verification measuring die comprises a measuring die main body, a measuring rod and a cover plate, a plurality of imaging marks are vertically arranged in the measuring rod, the measuring mold body is fixed to a base ring of a three-dimensional positioning system through a plurality of first locking pieces, and the cover plate is fixed to the measuring mold body through a plurality of second locking pieces. The measuring die body and the cover plate are respectively provided with a plurality of first fixing holes and second fixing holes which are used for fixing measuring rods. The MR verification measurement mold provided by the utility model can accurately position the measurement rod so as to determine X and Y coordinate theoretical values of a nuclear magnetic imaging mark point, and can effectively determine a Z coordinate theoretical value of the nuclear magnetic imaging mark point through a plurality of imaging marks vertically arranged in the measurement rod. In addition, the operation of nuclear magnetic resonance imaging can be realized by placing a sealed water bag or a water pipe with a proper size outside or inside the measuring mold main body, or by using a smaller water bag to surround an imaging mark in the measuring rod.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an MR calibration measurement mold. Background Art

[0002] The existing MR calibration measurement mold needs to be filled with water in a container for use. When parts are aged or there are problems with processing quality, water leakage is likely to occur. In addition, when used for measurement, it is suspended on a nuclear magnetic resonance adapter through the base fixing screws and is in a horizontal state at this time. After filling with water, the weight of the mold body increases, which may cause the container to overturn. At the same time, the cylindrical imaging marks are not conducive to calculating the central coordinate values of the marked points, seriously affecting the measurement accuracy. Content of the Utility Model

[0003] The purpose of the utility model is to solve the disadvantages that the existing MR calibration measurement mold needs to be filled with water in a container for use, is prone to water leakage, may cause the container to overturn, and at the same time, the cylindrical imaging marks are not conducive to calculating the central coordinate values of the marked points, seriously affecting the measurement accuracy, and provides an MR calibration measurement mold.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an MR calibration measurement mold, including a measurement mold main body, a plurality of measurement rods arranged in the measurement mold main body, and a cover plate arranged at the top of the measurement mold main body and used to fix the measurement rods in the measurement mold main body;

[0005] A plurality of imaging marks are vertically arranged in the measurement rods. The measurement mold main body is fixed on the base ring of the stereotactic system through a plurality of first locking parts. The cover plate is fixed on the measurement mold main body through a plurality of second locking parts. A plurality of first fixing holes for fixing the measurement rods and a plurality of second fixing holes are respectively arranged on the measurement mold main body and the cover plate.

[0006] Further, the positions of the plurality of second fixing holes on the cover plate correspond to the positions of the plurality of first fixing holes in the measurement mold main body one by one.

[0007] Further, first fixing columns and second fixing columns for inserting into the first fixing holes and the second fixing holes are respectively arranged at both ends of the measurement rod. The diameters of the first fixing holes and the second fixing holes are adapted to the diameters of the first fixing columns and the second fixing columns.

[0008] Further, the diameter of the first fixing column is larger than the diameter of the second fixing column.

[0009] Further, a plurality of mounting holes for mounting the imaging marks are arranged in the measurement rod, and the imaging marks are spherical imaging marks.

[0010] Further, an installation plate for installing the imaging marker in the installation hole is also provided on the measuring rod, and a plurality of third locking members pass through the cover plate and are locked in the measuring rod.

[0011] Further, the measuring die body includes a body for fixing the measuring rod and a base provided below the body, and a plurality of first locking holes for the first locking members to pass through are provided on the base.

[0012] Further, a plurality of test grooves are also provided on the substrate.

[0013] Further, a plurality of second locking holes for the second locking members to penetrate are provided on the body of the measuring die body, and a plurality of third locking holes corresponding to the second locking members to penetrate are provided on the cover plate.

[0014] Further, a plurality of weight-reducing holes are also provided on the cover plate.

[0015] The beneficial effects of an MR calibration measurement die provided by the present utility model are as follows: through the first fixing holes and the second fixing holes at fixed positions on the measuring die body and the top cover, the measuring rod can be accurately positioned, so as to determine the theoretical values of the X and Y coordinates of the nuclear magnetic resonance imaging marker points. Through a plurality of imaging markers vertically arranged in the measuring rod, the theoretical value of the Z coordinate of the nuclear magnetic resonance imaging marker points can be effectively determined, thereby effectively improving the measurement accuracy of the MR calibration measurement die. In addition, by placing a sealing water bag or a water pipe of an appropriate size outside or inside the measuring die body, or surrounding the imaging markers in the measuring rod with a smaller water bag, the operation of nuclear magnetic resonance imaging can be realized, thereby effectively improving the accuracy of nuclear magnetic resonance imaging while avoiding the situation that the container overturns due to filling the measuring die body with water. Description of the Drawings

[0016] Figure 1 is an exploded schematic view of the MR calibration measurement die provided by the present utility model;

[0017] Figure 2 is a structural schematic view of the measuring die body in the MR calibration measurement die provided by the present utility model;

[0018] Figure 3 is an exploded schematic view of the measuring rod in the MR calibration measurement die provided by the present utility model;

[0019] In the figure:

[0020] 100 - MR calibration measurement die,

[0021] 10 - measuring die body, 11 - body, 111 - first fixing hole, 112 - second locking hole,

[0022] 12 - Base, 121 - First locking hole, 122 - Test groove, 13 - First locking member,

[0023] 20 - Measuring rod, 21 - First fixing post, 22 - Second fixing post, 23 - Imaging mark, 24 - Mounting plate, 25 - Third locking member, 26 - Mounting hole, 30 - Cover plate, 31 - Second fixing hole, 32 - Third locking hole, 33 - Second locking member, 34 - Positioning pin, 35 - Pin hole, 36 - Weight reduction hole. Detailed implementation mode

[0024] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] See Figures 1-3 , a MR calibration measurement mold 100 provided by the present utility model. The MR calibration measurement mold 100 includes a measurement mold main body 10, a plurality of measuring rods 20 disposed in the measurement mold main body 10, and a cover plate 30 disposed on the top of the measurement mold main body 10 and used to fix the measuring rods 20 in the measurement mold main body 10; a plurality of imaging marks 23 are provided in the measuring rods 20. The measurement mold main body 10 is fixed on the base ring of the stereotactic system through a plurality of first locking members 13, the cover plate 30 is fixed on the measurement mold main body 10 through a second locking member 33, and a plurality of first fixing holes 111 and second fixing holes 31 for fixing the measuring rods 20 are respectively provided on the measurement mold main body 10 and the cover plate 30. During the radiotherapy process, it is usually necessary to accurately obtain the anatomical structure position of the patient through the stereotactic system. The accuracy of the finally obtained anatomical structure position depends on the positioning accuracy of the stereotactic system and the imaging accuracy of the imaging device itself. For the accuracy of the stereotactic system, the manufacturer has its own quality control measures to ensure it. However, for the imaging device of non - manufacturer products, its imaging accuracy is unknown. Therefore, it is necessary to use this MR calibration measurement mold 100 in cooperation with the manufacturer's stereotactic system to detect the imaging deviation of the imaging device.

[0026] Such as Figure 1 And Figure 2As shown, the MR calibration measurement mold 100 provided by the present utility model can accurately locate the measuring rod 20 through the measurement mold body 11 and the first fixing hole 111 and the second fixing hole 31 at the fixed positions on the top cover, so as to determine the theoretical values of the X and Y coordinates of the nuclear magnetic resonance imaging marker 23 points. Through a plurality of imaging markers 23 vertically arranged in the measuring rod 20, the theoretical value of the Z coordinate of the nuclear magnetic resonance imaging marker 23 points can be effectively determined, thereby effectively improving the measurement accuracy of the MR calibration measurement mold 100. In addition, by placing a sealing water bag or water pipe of appropriate size outside or inside the measurement mold body 10, or surrounding the imaging marker 23 in the measuring rod 20 with a smaller water bag, the operation of nuclear magnetic resonance imaging can be realized, thereby effectively improving the accuracy of nuclear magnetic resonance imaging while avoiding the situation of the container tipping over caused by filling the measurement mold body 10 with water.

[0027] As Figure 1 and Figure 2 shown, the positions of the multiple second fixing holes 31 on the cover plate 30 correspond one-to-one with the positions of the multiple first fixing holes 111 in the measurement mold body 10. By making the positions of the multiple second fixing holes 31 on the cover plate 30 correspond one-to-one with the positions of the multiple first fixing holes 111 in the measurement mold body 10 and having the same number as the multiple first fixing holes 111, it effectively ensures that the multiple measuring rods 20 are accurately fixed in the measurement mold body 10, improves the positioning accuracy of the multiple measuring rods 20 installed in the measurement mold body 10, and further determines the accuracy of the theoretical values of the X and Y coordinates of the nuclear magnetic resonance imaging marker 23 points.

[0028] As Figure 1 and Figure 3 shown, the two ends of the measuring rod 20 are respectively provided with a first fixing column 21 and a second fixing column 22 for inserting into the first fixing hole 111 and the second fixing hole 31, and the diameters of the first fixing hole 111 and the second fixing hole 31 are adapted to the diameters of the first fixing column 21 and the second fixing column 22. By making the diameters of the first fixing hole 111 and the second fixing hole 31 adapted to the diameters of the first fixing column 21 and the second fixing column 22, the fitting degree between the first fixing column 21 and the second fixing column 22 of the measuring rod 20 and the first fixing hole 111 and the second fixing hole 31 can be effectively improved, thereby improving the sealing performance while effectively improving the stability of the measuring rod 20 installed in the measurement mold body 10 through the first fixing hole 111 and the second fixing hole 31. In the embodiment provided by the present utility model, the diameter of the first fixing column 21 is greater than the diameter of the second fixing column 22. By setting the diameter of the first fixing column 21 to be greater than the diameter of the second fixing column 22, it can effectively prevent the wrong installation direction when installing the measuring rod 20, improve the convenience of the user during the installation process, and further improve the accuracy of the measuring rod 20 installed in the measurement mold body 10 through the first fixing column 21 and the second fixing column 22.

[0029] As Figure 3 shown, multiple mounting holes 26 for mounting imaging markers 23 are provided in the measuring rod 20, and the imaging markers 23 are spherical imaging markers 23. In the embodiment provided by the present utility model, three imaging markers 23 are vertically arranged in the measuring rod 20, so three mounting holes 26 for mounting the imaging markers 23 are correspondingly provided. The imaging marker 23 provided by the present utility model is composed of a spherical shell made of a non-metallic material and a nuclear magnetic imaging liquid, and can form regular circular marker highlights on the nuclear magnetic image, thereby effectively improving the accuracy of the theoretical values of the X, Y, and Z coordinates of the nuclear magnetic imaging marker 23 points of the MR calibration measuring mold 100.

[0030] As Figure 3 shown, an installation plate 24 for mounting the imaging marker 23 in the mounting hole 26 is further provided on the measuring rod 20, and a plurality of third locking members 25 pass through the cover plate 30 and are locked in the measuring rod 20. After the spherical imaging marker 23 is loaded into the mounting hole 26, by using bolts, studs, and pins and other third locking members 25 to pass through the installation plate 24 and be locked in the measuring rod 20, the stability of the fixed connection between the installation plate 24 and the measuring rod 20 can be effectively guaranteed, thereby ensuring the stability of the spherical imaging marker 23 installed in the mounting hole 26 of the measuring rod 20, and further improving the accuracy of the theoretical values of the X, Y, and Z coordinates of the nuclear magnetic imaging marker 23 points of the MR calibration measuring mold 100.

[0031] As Figure 1 and Figure 2 shown, the measuring mold main body 10 includes a main body 11 for fixing the measuring rod 20 and a base 12 arranged below the main body 11, and a plurality of first locking holes 121 for the first locking members 13 to pass through are provided on the base 12. The measuring mold main body 10 is an integral structure. By using bolts, studs, and pins and other locking members to pass through the first locking holes 121 on the base 12 and be locked on the base ring of the stereotactic system or the MR adapter, the stability of the measuring mold main body 10 installed on the base ring of the stereotactic system or the MR adapter can be effectively guaranteed. Subsequently, the first fixing column 21 of the measuring rod 20 is inserted into the first fixing hole 111 in the main body 11, thereby completing the operation of installing the measuring rod 20 in the measuring mold main body 10. In addition, in the embodiment provided by the present utility model, a plurality of test grooves 122 are further provided on the substrate. Through the test grooves 122, positioning rods and head nails can be installed on the base ring of the stereotactic system, so as to better position the measuring mold main body 10 while detecting whether the positioning rods and head nails have an adverse effect on nuclear magnetic imaging, thereby enriching the use scenarios of the MR calibration measuring mold 100 and better meeting the test requirements of users.

[0032] As Figure 1 and Figure 2As shown in the figure, a plurality of second locking holes 112 through which the second locking member 33 can penetrate are provided on the body 11 of the measuring mold body 10, and a plurality of third locking holes 32 through which the second locking member 33 can penetrate are correspondingly provided on the cover plate 30. Two positioning pins 34 and pin holes 35 for inserting and positioning the positioning pins are symmetrically provided on the cover plate 30. By passing the positioning pins 34 through the pin holes 35 and inserting them into the body 11 of the measuring mold body 10, the positioning accuracy between the cover plate 30 and the body 11 of the measuring mold body 10 can be effectively improved, and the cover plate 30 can be effectively prevented from rotating relative to the measuring mold body 10. After the measuring mold body 10 is locked to the base ring of the three-dimensional positioning system through first locking members 13 such as bolts, studs and pins, and the first fixing column 21 of the measuring rod 20 is inserted into the first fixing hole 111 in the body 11, after the second fixing column 22 of the measuring rod 20 is inserted into the second fixing hole 31 on the cover plate 30, locking members such as bolts, studs and pins are passed through the third locking holes 32 on the cover plate 30 and locked into the second locking holes 112 of the body 11 of the measuring mold body 10, so that the cover plate 30 and the body 11 of the measuring mold body 10 are fixedly connected, and the overall installation operation of the MR calibration measuring mold 100 can be completed. In addition, in the embodiment provided by the present utility model, a plurality of weight-reducing holes 36 are further provided on the cover plate 30. By further providing a plurality of weight-reducing holes 36 on the cover plate 30, the weight of the cover plate 30 can be effectively reduced, thereby effectively improving the convenience of the user's operation of installing the measuring rod 20 into the body 11 of the measuring mold body 10 by using the cover plate 30. At the same time, the user can pass his fingers through the weight-reducing holes 36 on the cover plate 30 to realize the operation of moving the cover plate 30, thereby further improving the convenience of the user's operation of installing the measuring rod 20 into the body 11 of the measuring mold body 10 by using the cover plate 30.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An MR calibration and measurement mold, characterized in that: It comprises a measuring mold body (10), a plurality of measuring rods (20) arranged in the measuring mold body (10), and a cover plate (30) arranged on the top of the measuring mold body (10) and used for fixing the measuring rods (20) in the measuring mold body (10); A plurality of imaging marks (23) are vertically arranged in the measuring rod (20); the measuring mold body (10) is fixed to the base ring of the stereo positioning system through a plurality of first locking members (13); the cover plate (30) is fixed to the measuring mold body (10) through a plurality of second locking members (33); and a plurality of first fixing holes (111) and second fixing holes (31) for fixing the measuring rod (20) are respectively arranged on the measuring mold body (10) and the cover plate (30).

2. The MR calibration and measurement mold according to claim 1, characterized in that: The positions of the plurality of second fixing holes (31) on the cover plate (30) correspond one-to-one to the positions of the plurality of first fixing holes (111) in the measuring mold body (10).

3. The MR calibration and measurement mold according to claim 1, characterized in that: A first fixing column (21) and a second fixing column (22) for inserting into the first fixing hole (111) and the second fixing hole (31) are respectively provided at both ends of the measuring rod (20); the apertures of the first fixing hole (111) and the second fixing hole (31) are adapted to the diameters of the first fixing column (21) and the second fixing column (22).

4. The MR calibration and measurement mold according to claim 3, characterized in that: The diameter of the first fixing column (21) is greater than the diameter of the second fixing column (22).

5. The MR calibration and measurement mold according to claim 1, characterized in that: The measuring rod (20) is provided with a plurality of mounting holes (26) for mounting the imaging marker (23), and the imaging marker (23) is a spherical imaging marker.

6. The MR calibration and measurement mold according to claim 5, characterized in that: The measuring rod (20) is also provided with a mounting plate (24) for mounting the imaging mark (23) in the mounting hole (26); a plurality of third locking members (25) pass through the mounting plate (24) and are locked in the measuring rod (20).

7. The MR calibration and measurement mold according to claim 1, characterized in that: The measuring mold body (10) comprises a main body (11) for fixing the measuring rod (20) and a base (12) arranged below the main body (11), and the base (12) is provided with a plurality of first locking holes (121) for the first locking member (13) to pass through.

8. The MR calibration and measurement mold according to claim 7, characterized in that: The base is also provided with a plurality of test grooves (122).

9. The MR calibration and measurement mold according to claim 8, characterized in that: The body (11) of the measuring mold main body (10) is provided with a plurality of second locking holes (112) for the second locking member (33) to be locked, and the cover plate (30) is correspondingly provided with a plurality of third locking holes (32) for the second locking member (33) to be inserted into.

10. The MR calibration and measurement mold according to claim 9, characterized in that: The cover plate (30) is also provided with a plurality of weight-reducing holes (36).

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