MR verification measurement die

Abstract

The invention provides an MR verification measurement mold. The MR verification measurement mold comprises a measurement mold main body, a measurement 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 invention 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] This invention relates to the field of medical device technology, and in particular to an MR calibration and measurement mold. Background Technology

[0002] Existing MR calibration measurement phantoms require the container to be filled with water for use, which can easily lead to leakage due to aging of parts or manufacturing defects. Furthermore, during measurement, the phantom is suspended from the MRI adapter via base fixing screws, resulting in a horizontal position. Adding water increases the phantom's weight, potentially causing the container to tip over. Additionally, the cylindrical development marks make it difficult to calculate the center coordinates of the marks, severely impacting measurement accuracy. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of existing MR calibration measurement molds, which require the container to be filled with water, making them prone to leakage and potentially causing the container to tip over. Additionally, the cylindrical development marks are not conducive to calculating the center coordinates of the mark points, severely affecting measurement accuracy. This invention provides an MR calibration measurement mold.

[0004] The technical solution adopted by the present invention to solve its technical problem is: an MR calibration measurement mold, including a measurement mold body, a plurality of measuring rods arranged in the measurement mold body, and a cover plate disposed on the top of the measurement mold body for fixing the measuring rods in the measurement mold body;

[0005] The measuring rod has several imaging marks vertically arranged inside. The measuring mold body is fixed to the base ring of the three-dimensional positioning system by several first locking members. The cover plate is fixed to the measuring mold body by several second locking members. The measuring mold body and the cover plate are respectively provided with several first fixing holes and second fixing holes for fixing the measuring rod.

[0006] Furthermore, the positions of several second fixing holes on the cover plate correspond one-to-one with the positions of several first fixing holes inside the measuring mold body.

[0007] Furthermore, the measuring rod is provided with a first fixing post and a second fixing post at both ends for inserting into the first fixing hole and the second fixing hole, respectively, and the diameter of the first fixing hole and the second fixing hole is adapted to the diameter of the first fixing post and the second fixing post.

[0008] Furthermore, the diameter of the first fixing post is larger than the diameter of the second fixing post.

[0009] Furthermore, the measuring rod is provided with a plurality of mounting holes for mounting the imaging mark, the imaging mark being a spherical imaging mark.

[0010] Furthermore, the measuring rod is also provided with a mounting plate for installing the imaging mark in the mounting hole, and a number of third locking members pass through the cover plate and are locked inside the measuring rod.

[0011] Furthermore, the measuring mold body includes a body for fixing the measuring rod and a base disposed below the body, the base being provided with a plurality of first locking holes through which the first locking member passes.

[0012] Furthermore, the substrate is provided with several test grooves.

[0013] Furthermore, the main body of the measuring mold is provided with a plurality of second locking holes through which the second locking member can pass, and the cover plate is provided with a plurality of third locking holes through which the second locking member can pass.

[0014] Furthermore, the cover plate is also provided with several weight-reduction holes.

[0015] The beneficial effects of the MR calibration measurement mold provided by this invention are as follows: By using the first and second fixing holes on the mold body and top cover, the measuring rod can be accurately positioned, thereby determining the theoretical X and Y coordinates of the MRI imaging marker points. Through several imaging markers vertically set within the measuring rod, the theoretical Z coordinate of the MRI imaging marker points can be effectively determined, thus significantly improving the measurement accuracy of the MR calibration measurement mold. Furthermore, by placing appropriately sized sealed water bags or pipes outside or inside the measuring mold body, or by surrounding the imaging markers within the measuring rod with smaller water bags, MRI imaging can be performed. This effectively improves the accuracy of MRI imaging while avoiding the possibility of the container tipping over when the measuring mold body is filled with water. Attached Figure Description

[0016] Figure 1 An exploded view of the MR calibration and measurement mold provided by this invention;

[0017] Figure 2 This is a schematic diagram of the main body of the measuring mold in the MR calibration measuring mold provided by the present invention;

[0018] Figure 3 This is an exploded view of the measuring rod in the MR calibration measurement mold provided by the present invention;

[0019] In the picture:

[0020] 100-MR calibration and measurement mold

[0021] 10- Measuring mold body, 11- Body, 111- First fixing hole, 112- Second locking hole,

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

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

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 merely illustrative and not intended to limit the invention.

[0025] See Figure 1-3 This invention provides an MR calibration measurement mold 100, which includes a measurement mold body 10, multiple measuring rods 20 arranged within the measurement mold body 10, and a cover plate 30 disposed on the top of the measurement mold body 10 for fixing the measuring rods 20 within the measurement mold body 10. Multiple imaging marks 23 are provided within the measuring rods 20. The measurement mold body 10 is fixed to the base ring of a stereotactic positioning system by multiple first locking members 13, and the cover plate 30 is fixed to the measurement mold body 10 by second locking members 33. The measurement mold body 10 and the cover plate 30 are respectively provided with multiple first fixing holes 111 and second fixing holes 31 for fixing the measuring rods 20. During radiotherapy, a stereotactic positioning system is typically required to accurately obtain the anatomical structure positions of the patient. The accuracy of the final obtained anatomical structure location depends on the positioning accuracy of the stereotactic system and the imaging accuracy of the imaging equipment itself. For the stereotactic system, the manufacturer has its own quality control measures to ensure accuracy. However, for imaging equipment that is not manufactured by the manufacturer, its imaging accuracy is unknown. Therefore, the MR calibration measurement mold 100 is needed to be used in conjunction with the manufacturer's stereotactic system to detect the imaging deviation of the imaging equipment.

[0026] like Figure 1 and Figure 2As shown, the MR calibration measurement mold 100 provided by the present invention can accurately position the measuring rod 20 through the first fixing hole 111 and the second fixing hole 31 on the measuring mold body 11 and the top cover, thereby determining the theoretical values ​​of the X and Y coordinates of the MRI imaging marker 23. Through several imaging markers 23 vertically set inside the measuring rod 20, the theoretical value of the Z coordinate of the MRI imaging marker 23 can be effectively determined, thereby effectively improving the measurement accuracy of the MR calibration measurement mold 100. Furthermore, by placing a sealed water bag or water pipe of appropriate size outside or inside the measuring mold body 10, or by surrounding the imaging marker 23 inside the measuring rod 20 with a smaller water bag, the MRI operation can be realized. This effectively improves the accuracy of MRI while avoiding the situation where the measuring mold body 10 is filled with water, causing the container to tip over.

[0027] like Figure 1 and Figure 2 As 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 inside the measuring mold body 10. By ensuring that 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 inside the measuring mold body 10, and that the number of the second fixing holes 31 is the same as the number of the first fixing holes 111, the multiple measuring rods 20 are effectively fixed accurately inside the measuring mold body 10, thereby improving the positioning accuracy of the multiple measuring rods 20 installed inside the measuring mold body 10, and thus improving the accuracy of determining the theoretical values ​​of the X and Y coordinates of the MRI imaging marker 23.

[0028] like Figure 1 and Figure 3 As shown, the measuring rod 20 has a first fixing post 21 and a second fixing post 22 at both ends for insertion into the first fixing hole 111 and the second fixing hole 31, respectively. The diameters of the first fixing hole 111 and the second fixing hole 31 are adapted to the diameters of the first fixing post 21 and the second fixing post 22. By adapting the diameters of the first fixing hole 111 and the second fixing hole 31 to the diameters of the first fixing post 21 and the second fixing post 22, the fit between the first fixing post 21 and the second fixing post 22 of the measuring rod 20 and the first fixing hole 111 and the second fixing hole 31 can be effectively improved. This improves the sealing performance and the stability of the measuring rod 20 installed in the measuring mold body 10 through the first fixing hole 111 and the second fixing hole 31. In the embodiment provided by the present invention, the diameter of the first fixing post 21 is larger than the diameter of the second fixing post 22. By setting the diameter of the first fixing post 21 to be larger than the diameter of the second fixing post 22, it is possible to effectively prevent incorrect 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 being installed in the measuring mold body 10 through the first fixing post 21 and the second fixing post 22.

[0029] like Figure 3 As shown, the measuring rod 20 has multiple mounting holes 26 for mounting imaging markers 23, which are spherical imaging markers 23. In the embodiment provided by the present invention, three imaging markers 23 are vertically arranged inside the measuring rod 20, and therefore three mounting holes 26 are correspondingly provided for mounting the imaging markers 23. The imaging markers 23 provided by the present invention are composed of a spherical shell made of non-metallic material and NMR developing solution, which can form regular circular marker bright spots on the NMR image, thereby effectively improving the accuracy of the theoretical values ​​of the X, Y, and Z coordinates of the NMR imaging markers 23 points of the MR calibration measurement mold 100.

[0030] like Figure 3 As shown, the measuring rod 20 is also provided with a mounting plate 24 for installing the imaging mark 23 into the mounting hole 26. Multiple third locking elements 25 pass through the cover plate 30 and are locked inside the measuring rod 20. After the spherical imaging mark 23 is installed into the mounting hole 26, the third locking elements 25, such as bolts, studs, and pins, pass through the mounting plate 24 and are locked inside the measuring rod 20. This effectively ensures the stability of the fixed connection between the mounting plate 24 and the measuring rod 20, thereby ensuring the stability of the spherical imaging mark 23 installed in the mounting hole 26 of the measuring rod 20. This further improves the accuracy of the theoretical values ​​of the X, Y, and Z coordinates of the MRI imaging mark 23 points of the MR calibration measurement mold 100.

[0031] like Figure 1 and Figure 2 As shown, the measuring mold body 10 includes a body 11 for fixing the measuring rod 20 and a base 12 disposed below the body 11. The base 12 is provided with a plurality of first locking holes 121 through which the first locking member 13 passes. The measuring mold body 10 is an integral structure. By using locking members such as bolts, studs, and pins to pass through the first locking holes 121 on the base 12 and lock them onto the base ring or MR adapter of the stereo positioning system, the stability of the measuring mold body 10 installed on the base ring or MR adapter of the stereo positioning system can be effectively ensured. Subsequently, the first fixing post 21 of the measuring rod 20 is inserted into the first fixing hole 111 in the body 11, thereby completing the operation of installing the measuring rod 20 into the measuring mold body 10. In addition, in the embodiment provided by the present invention, a plurality of test grooves 122 are also provided on the substrate. By testing the groove 122, positioning support rods and head pins can be installed on the base ring of the stereo positioning system, thereby better positioning the main body 10 of the measurement mold and detecting whether the support rods and head pins have an adverse effect on MRI imaging. This enriches the application scenarios of the MR calibration measurement mold 100 and better meets the testing needs of users.

[0032] like Figure 1 and Figure 2As shown, the main body 11 of the measuring mold body 10 is provided with multiple second locking holes 112 through which the second locking member 33 can pass, and the cover plate 30 is provided with multiple third locking holes 32 through which the second locking member 33 can pass. The cover plate 30 is also symmetrically provided with two positioning pins 34 and pin holes 35 for the positioning pins to be inserted and positioned. By passing the positioning pins 34 through the pin holes 35 and inserting them into the main body 11 of the measuring mold body 10, the positioning accuracy between the cover plate 30 and the main body 11 of the measuring mold body 10 can be effectively improved, and the rotation of the cover plate 30 relative to the measuring mold body 10 can be effectively prevented. After the measuring mold body 10 is locked to the base ring of the three-dimensional positioning system by first locking members 13 such as bolts, studs, and pins, and the first fixing post 21 of the measuring rod 20 is inserted into the first fixing hole 111 in the body 11, the second fixing post 22 of the measuring rod 20 is inserted into the second fixing hole 31 on the cover plate 30, and then the locking members such as bolts, studs, and pins pass through the third locking hole 32 on the cover plate 30 and are locked into the second locking hole 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 is completed. In addition, in the embodiment provided by the present invention, the cover plate 30 is also provided with a plurality of weight reduction holes 36. By providing multiple weight-reducing holes 36 on the cover plate 30, the weight of the cover plate 30 can be effectively reduced, thereby improving the convenience for the user to install the measuring rod 20 into the body 11 of the measuring mold body 10 using the cover plate 30. At the same time, the user can pass their fingers through the weight-reducing holes 36 on the cover plate 30 to move the cover plate 30, thereby further improving the convenience for the user to install the measuring rod 20 into the body 11 of the measuring mold body 10 using the cover plate 30.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An MR calibration and measurement mold, characterized in that, It includes a measuring mold body (10), a plurality of measuring rods (20) arranged inside the measuring mold body (10), and a cover plate (30) disposed on the top of the measuring mold body (10) for fixing the measuring rods (20) inside the measuring mold body (10); The measuring rod (20) has several imaging marks (23) vertically arranged inside. The measuring mold body (10) is fixed to the base ring of the three-dimensional positioning system by several first locking parts (13). The cover plate (30) is fixed to the measuring mold body (10) by several second locking parts (33). The measuring mold body (10) and the cover plate (30) are respectively provided with several first fixing holes (111) and second fixing holes (31) for fixing the measuring rod (20).

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

3. The MR calibration and measurement mold as described in claim 1, characterized in that, The measuring rod (20) has a first fixing post (21) and a second fixing post (22) at both ends for inserting into the first fixing hole (111) and the second fixing hole (31), respectively. The diameter of the first fixing hole (111) and the second fixing hole (31) is adapted to the diameter of the first fixing post (21) and the second fixing post (22).

4. The MR calibration and measurement mold as described in claim 3, characterized in that, The diameter of the first fixing post (21) is larger than the diameter of the second fixing post (22).

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

6. The MR calibration and measurement mold as described in claim 5, characterized in that, The measuring rod (20) is also provided with a mounting plate (24) for installing the imaging mark (23) in the mounting hole (26), and 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 as described in claim 1, characterized in that, The measuring mold body (10) includes a body (11) for fixing the measuring rod (20) and a base (12) disposed below the body (11). The base (12) is provided with a plurality of first locking holes (121) through which the first locking member (13) passes.

8. The MR calibration and measurement mold as described in claim 7, characterized in that, The substrate is also provided with a number of test grooves (122).

9. The MR calibration and measurement mold as described in claim 8, characterized in that, The main body (11) of the measuring mold body (10) is provided with a plurality of second locking holes (112) for the second locking member (33) to lock, and the cover plate (30) is provided with a plurality of third locking holes (32) for the second locking member (33) to pass through.

10. The MR calibration and measurement mold as described in claim 9, characterized in that, The cover plate (30) is also provided with a number of weight reduction holes (36).

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