Double-tuning animal coil mounting structure
By adopting a combined structure of cylindrical coil, shield sleeve and cylindrical assembly in double-tuned animal NMR imaging, the problems of coil instability and fixation are solved, stable support and signal protection are achieved, and assembly and maintenance are simplified. The process improves imaging quality and magnetic field uniformity.
Patent Information
- Application Number
- CN202323577116.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-27
AI Technical Summary
In dual-tuned animal NMR imaging, the instability, fixing and welding processes of the cylindrical coils are inconvenient, and the number of transmission lines is large, resulting in high production accuracy requirements, complex operation and difficult debugging.
Using an installation structure including a cylindrical coil, a shielding sleeve and a cylindrical assembly, connected by multiple legs and end rings, shielded with non-conductive materials and aluminum foil, achieving stable support and signal interference protection, and passing through the cylindrical assembly The insertion structure simplifies coil assembly and maintenance.
It improves the stability and structural integrity of the coil, simplifies the assembly process, reduces electromagnetic interference, ensures imaging quality and magnetic field uniformity, and facilitates welding fixation and maintenance of the coil.
Smart Images
Figure CN222365087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuclear magnetic resonance imaging devices, in particular to a dual-tuning animal coil installation structure. Background Art
[0002] Magnetic resonance imaging plays an increasingly important role in scientific research and clinical medicine. With the development of technology, multi-core dual-tuning MRI has gradually emerged. Compared with ordinary single-core single-tuning MRI, multi-core dual-tuning has the advantages of more imaging information and faster imaging speed. In the field of nuclear magnetic resonance imaging of small animals such as mice, dual-tuning coils usually use cylindrical coils. Due to the instability of the coils, the fixing and welding processes of the coils are usually very inconvenient. At the same time, in order to ensure the uniformity of the magnetic field and the accuracy of imaging, a large number of transmission lines are required. Therefore, the production of the coils has many problems such as high precision requirements, inconvenient operation, and difficulty in subsequent debugging of the coils. Utility Model Content
[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a double-tuned animal coil.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a double-tuned animal coil installation structure, including a cylindrical coil, the cylindrical coil comprising connected legs and end rings located at both ends of the legs, the cylindrical coil is fixed in a shielding sleeve, a cylindrical assembly is arranged on the outside of the shielding sleeve, one end of the cylindrical assembly has a folded plug-in portion, the cylindrical assembly is plugged into a cylindrical support body, a limiting ring groove is arranged on one end face of the cylindrical support body, the plug-in portion is located in the limiting ring groove, the cylindrical support body is a non-conductive material, and the shielding sleeve is made of acrylic material.
[0005] According to another embodiment of the utility model, the legs and the end rings are made of copper material with high conductivity and low resistance, which can reduce energy loss and improve the sensitivity and efficiency of the coil.
[0006] According to another embodiment of the utility model, the cylindrical coil has a diameter of 60±2 mm. The diameter of the coil is sufficient to cover the imaging area and provide a uniform magnetic field to ensure imaging quality.
[0007] According to another embodiment of the utility model, the number of the legs is eight. The magnetic field has good uniformity, and the coil manufacturing is within a controllable range.
[0008] According to another embodiment of the utility model, the shielding sleeve is further covered with aluminum foil. The magnetic field is partitioned by covering with aluminum foil, thereby further preventing signal interference.
[0009] The beneficial effect of the utility model is that the coil structure in which the two groups of end rings are connected by multiple legs ensures the stability and structural integrity of the coil. The shielding sleeve has good strength, can provide stable support for the cylindrical coil, and can also shield external electromagnetic interference. In addition, it has excellent light transmittance, which is convenient for welding and fixing the capacitor and circuit inside the coil. The cylindrical assembly is directly plugged into the cylindrical support body to achieve precise positioning. The structure of the present application is convenient for overcoming the technical problems of difficult welding and fixing of coil capacitors and circuits, can provide stable support and shielding for the dual-tuned animal coil, simplify the overall assembly of the coil, and can be directly plugged in and out when the coil is inspected without damaging the coil structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0011] Figure 1 It is the front view of the utility model;
[0012] Figure 2 yes Figure 1 A partial enlarged view of
[0013] Figure 3 It is a schematic diagram of the structure of the coil.
[0014] In the figure, there are a cylindrical coil 1, a leg 2, an end ring 3, a shielding sleeve 4, a cylindrical assembly 5, a plug-in portion 6, a cylindrical support body 7, and a limiting ring groove 8. DETAILED DESCRIPTION
[0015] like Figures 1 to 3 It is a structural schematic diagram of the utility model, a double-tuned animal coil installation structure, including a cylindrical coil 1, the cylindrical coil 1 includes a connected leg 2 and an end ring 3 located at both ends of the leg 2, the cylindrical coil 1 is fixed in a shielding sleeve 4, a cylindrical assembly 5 is arranged on the outside of the shielding sleeve 4, one end of the cylindrical assembly 5 has a folded plug-in portion 6, the cylindrical assembly 5 is plugged into a cylindrical support body 7, a limiting ring groove 8 is arranged on one end face of the cylindrical support body 7, the plug-in portion 6 is located in the limiting ring groove 8, the cylindrical support body 7 is a non-conductive material, the shielding sleeve 4 is made of acrylic; the leg 2 is a central transmission line; the end ring is a ring receiving line.
[0016] Specifically, the present application adopts a coil structure in which two groups of end rings 3 are connected by multiple legs 2 to ensure the stability and structural integrity of the coil. The cylindrical coil 1 is built into the shielding sleeve 4. The shielding sleeve 4 is made of acrylic material and has good strength. It can provide stable support for the cylindrical coil 1 and can also shield external electromagnetic interference. In addition, the shielding sleeve 4 has excellent light transmittance, which is convenient for welding and fixing the internal capacitor and circuit of the coil. After the cylindrical coil 1 is fixed, the shielding sleeve 4 is installed in the cylindrical assembly 5, and then the cylindrical assembly 5 is directly plugged into the cylindrical support body 7, and precise positioning is achieved through the cooperation of the plug-in part 6 and the limiting ring groove 8. The structure of the present application is convenient for fixing the two end rings 3 and multiple groups of legs 2, which is convenient for overcoming the technical problems of difficult welding and fixing of coil capacitors and circuits. It can provide stable support and shielding for the dual-tuned animal coil, simplify the assembly of the entire coil, and can be directly plugged in and out when the coil is repaired without damaging the coil structure.
[0017] According to another embodiment of the utility model, the legs 2 and the end rings 3 are further made of a copper material with high conductivity. The copper material with high conductivity has low resistance, can reduce energy loss, and improve the sensitivity and efficiency of the coil.
[0018] According to another embodiment of the utility model, the cylindrical coil 1 further comprises a diameter of 60±2 mm. The diameter of the coil is sufficient to cover the imaging area and provide a uniform magnetic field to ensure imaging quality.
[0019] According to another embodiment of the utility model, the number of legs 2 is eight. The number of legs 2 directly determines the uniformity of the magnetic field. When the number of legs 2 increases, the magnetic field strength at the center of the coil will increase under the same excitation conditions, but the manufacturing complexity of the coil will increase. When the number of legs 2 is eight, the magnetic field uniformity is good, and the coil manufacturing is within the controllable range.
[0020] According to another embodiment of the present invention, the shielding sleeve 4 is further covered with aluminum foil. The magnetic field is partitioned by covering with aluminum foil, thereby further preventing signal interference.
[0021] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.
Claims
1. A dual-tuned animal coil mounting structure, comprising a cylindrical coil (1), characterized in that: The cylindrical coil (1) comprises a connected leg (2) and an end ring (3) located at both ends of the leg (2); the cylindrical coil (1) is fixed in a shielding sleeve (4); a cylindrical assembly (5) is arranged outside the shielding sleeve (4); one end of the cylindrical assembly (5) has a folded plug-in portion (6); the cylindrical assembly (5) is plugged into a cylindrical support body (7); a limiting ring groove (8) is arranged on one end surface of the cylindrical support body (7); the plug-in portion (6) is located in the limiting ring groove (8); the cylindrical support body (7) is made of non-conductive material; and the shielding sleeve (4) is made of acrylic material.
2. The dual-tuned animal coil mounting structure according to claim 1 is characterized in that: The legs (2) and the end rings (3) are made of copper material with high conductivity.
3. The dual-tuned animal coil mounting structure according to claim 1 is characterized in that: The cylindrical coil (1) has a diameter of 60±2 mm.
4. The dual-tuned animal coil mounting structure according to claim 1 is characterized in that: The number of the legs (2) is eight.
5. The dual-tuned animal coil mounting structure according to claim 1 is characterized in that: The shielding sleeve (4) is covered with aluminum foil.