High-performance magnetic resonance conduction plate

Abstract

The utility model discloses a high-performance magnetic resonance conduction plate, which belongs to the technical field of magnetic resonance imaging equipment and comprises a conduction plate body provided with a strong current area and a weak current area. The power supply filter module is arranged on the conduction plate body and is positioned in the strong current area; a plurality of gradient filter modules are arranged on the conduction plate body and are positioned in the strong current region; the radio frequency module is installed on the conduction plate body and located in the weak current area. The signal control filtering module is installed on the conduction plate body and located in the weak current area. The ground wire connector bar is installed on the conduction plate body and located in the weak current area. The pipe body module is arranged on the conduction plate body and is positioned in the weak current area; the strong current area and the weak current area which are independent of each other are arranged on the conducting plate body, each module is correspondingly distributed in the strong current area and the weak current area, strong current, weak current, large current and small current do not intersect with each other, interference is avoided, space distribution is reasonable, installation is easy, later maintenance and upgrading are easy, and filtering performance is good. And the requirements of a high-performance magnetic resonance imaging system can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance imaging equipment, and particularly relates to a high-performance magnetic resonance conduction plate. Background Art

[0002] When a magnetic resonance imaging system is working normally, it will generate a high-intensity magnetic field and a high-frequency electric field, which requires that the shielding room must have good shielding efficiency; usually, the places where electromagnetic field leakage is likely to occur in a magnetic resonance imaging system are mainly large-area positions such as doors, air return vents, and magnetic resonance conduction plates; among them, the magnetic resonance conduction plate is mainly used to connect the cables between the shielding room and the equipment room, and a large number of filters are arranged on it, which are mainly used to filter out external interference, especially high-frequency noise, and at the same time prevent the radio frequency signal of magnetic resonance from affecting other electrical equipment. Therefore, the shielding efficiency of the magnetic resonance conduction plate is particularly important.

[0003] At present, the specifications of most magnetic resonance conduction plates are usually 1600×800mm, with large volume and weight, unreasonable space distribution, few filters, many harness cables, complex structure, and inconvenient transportation, installation, maintenance, and modification and upgrade; moreover, the larger the area of the magnetic resonance conduction plate, the higher the risk of magnetic field and electric field leakage; if the installation of the magnetic resonance conduction plate is not standardized, it is easy to have the phenomenon of shielding leakage and it is not easy to be detected.

[0004] Therefore, it is an urgent problem to be solved at present to research and design a high-performance magnetic resonance conduction plate with good filtering performance, small area, simple structure, low production cost, easy installation and maintenance, and easy later modification and upgrade. Content of the Utility Model

[0005] For the problems existing in the prior art, the utility model provides a high-performance magnetic resonance conduction plate. An independent strong electricity area and weak electricity area are arranged on the conduction plate body. The power filter module and the gradient filter module are both located in the strong electricity area, and the radio frequency module, the signal control and filtering module, the ground wire connection row, and the pipe body module are all located in the weak electricity area. The strong and weak electricity and large and small currents will not cross each other and generate interference. The space distribution is reasonable, the installation is simple, it is easy to perform maintenance and upgrade later, the filtering performance is good, and it can meet the requirements of a high-performance magnetic resonance imaging system.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] The utility model provides a high-performance magnetic resonance conduction plate, comprising:

[0008] A conduction plate body, on which a strong electricity area and a weak electricity area are arranged;

[0009] A power filter module, the power filter module is installed on the conductive plate and located in the high-voltage area;

[0010] A plurality of gradient filter modules, wherein the plurality of gradient filter modules are installed on the conductive plate and located in the strong current area;

[0011] A radio frequency module, the radio frequency module is mounted on the conductive plate and located in the weak current area;

[0012] A signal control filter module, the signal control filter module is installed on the conductive plate and located in the weak current area;

[0013] A ground wire terminal block, the ground wire terminal block is installed on the conductive plate and is located in the weak current area;

[0014] A tube body module is installed on the conductive plate and is located in the weak current area.

[0015] As a preferred technical solution, the material of the conductive plate is set to be mirror stainless steel;

[0016] And / or, the thickness of the conductive plate is set to 3 mm;

[0017] And / or, the specification of the conductive plate body is set to 800×350 mm.

[0018] As a preferred technical solution, the power supply filter module includes a plurality of feed-through filters.

[0019] As a preferred technical solution, the power supply filter module includes twenty-four feed-through filters;

[0020] And / or, the feed-through filter is set as a τ-type feed-through power supply filter;

[0021] And / or, the feed-through filter comprises a housing, both ends of the housing are provided with through-hole capacitors, and a high-frequency nickel-zinc magnetic ring is installed on the housing;

[0022] And / or, the feed-through filter is vertically mounted on the conductive plate body via a nut.

[0023] As a preferred technical solution, the gradient filter module includes a dual-path filter and a bracket.

[0024] As a preferred technical solution, the rated voltage of the dual-channel filter is set to 1500V, and the rated current is set to 900A;

[0025] And / or, both ends of the dual-channel filter are provided with connection terminals, and the end surface of the dual-channel filter is provided with a transparent protective cover arranged around the connection terminals;

[0026] And / or, the bracket includes a support plate, and the dual-channel filter is placed on the support plate; first and second fixing seats are respectively provided at two ends of the support plate; the first fixing seat is fixedly connected to the conduction plate body; the dual-channel filter is connected with a cable, and the cable is fixed on the second fixing seat;

[0027] And / or, the number of the gradient filter modules is set to three.

[0028] As a preferred technical solution, the radio frequency module includes sixteen radio frequency receiving channels and two radio frequency transmitting channels.

[0029] As a preferred technical solution, the signal control and filtering module includes a plurality of signal filters.

[0030] As a preferred technical solution, the ground wire terminal block includes a plurality of grounding terminals.

[0031] As a preferred technical solution, the pipe body module includes a plurality of cutoff waveguides, magnet helium pipes and / or gradient water cooling pipes.

[0032] The beneficial effects of the present utility model are as follows:

[0033] On the conduction plate body of the present utility model, there are independent strong electricity area and weak electricity area. The power filter module and the gradient filter module are both located in the strong electricity area, and the radio frequency module, the signal control and filtering module, the ground wire terminal block and the pipe body module are all located in the weak electricity area. The strong and weak electricity, large and small currents will not cross each other and generate interference. The space distribution is reasonable, the installation is simple, and it is easy to perform maintenance and upgrade in the later stage. Moreover, the filtering performance is good, which can meet the requirements of a high-performance magnetic resonance imaging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the conduction plate body in a high-performance magnetic resonance conduction plate of the present utility model;

[0035] Figure 2 It is a schematic structural diagram of the power filter module in the present utility model;

[0036] Figure 3 It is a schematic structural diagram of the dual-channel filter in the gradient filter module of the present utility model;

[0037] Figure 4 It is a schematic structural diagram of the bracket in the gradient filter module of the present utility model;

[0038] Figure 5 It is a schematic structural diagram of the twenty-five channel signal control filter in the signal control and filtering module of the present utility model;

[0039] Figure 6 This is a schematic structural diagram of a nine-channel signal system filter in the signal control filter module of the present utility model.

[0040] In the figure: 1 - conduction plate body, 11 - strong electricity area, 12 - weak electricity area, 2 - feedthrough filter, 21 - housing, 22 - nut, 3 - gradient filter module, 31 - dual-channel filter, 311 - terminal, 312 - transparent protective cover, 32 - bracket, 321 - support plate, 322 - first fixed seat, 323 - second fixed seat, 4 - RF module, 5 - signal control filter module, 6 - ground wire terminal block, 7 - tube body module. Specific embodiments

[0041] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0042] Please refer to Figures 1 - 6 , which is an embodiment of a high-performance magnetic resonance conduction plate provided by the present utility model, including a conduction plate body 1, on which a strong electricity area 11 and a weak electricity area 12 are provided; a power filter module and several gradient filter modules 3 are both installed on the conduction plate body 1 and located in the strong electricity area 11; an RF module 4, a signal control filter module 5, a ground wire terminal block 6 and a tube body module 7 are all installed on the conduction plate body 1 and located in the weak electricity area 12; there will be no mutual crossing and interference between strong and weak electricity, large and small currents, the space distribution is reasonable, the installation is simple, it is easy to perform later maintenance and upgrade, and the filtering performance is good, which can meet the requirements of a high-performance magnetic resonance imaging system.

[0043] It should be noted that the material of the conduction plate body 1 is preferably set as mirror stainless steel for better aesthetics, the thickness of the conduction plate body 1 is preferably set as 3 mm, and the specification of the conduction plate body 1 is preferably set as 800×350 mm. Compared with the traditional conduction plate body 1 of 1300×800 mm, it has a smaller volume, lower cost, reasonable layout, is easy to transport and install, has a low risk of shielding leakage, and has good filtering performance. It can meet the requirements of a high-field-strength and high-performance magnetic resonance system while taking into account aesthetics.

[0044] In this embodiment, please refer to Figure 2 , the power filter module preferably includes a twenty-four-channel feedthrough filter 2; specifically, the feedthrough filter 2 is preferably set as a τ-type feedthrough power filter, which can be used on AC and DC devices with a rated voltage of 500 V and a rated current of 30 A or less, and can meet the power filtering requirements of high-power devices such as shim coils, scanning beds, and magnet cold heads; in other embodiments, the number of feedthrough filters 2 can also be set to other values as long as good filtering performance can be achieved.

[0045] Furthermore, please refer to Figure 2The feed-through filter 2 includes a shell 21, and both ends of the shell 21 are provided with through-hole capacitors, which isolate the input and output ends of the feed-through filter 2, and the through-hole capacitors are grounded, have small parasitic inductance, have very low impedance at high frequencies, and can effectively suppress high-frequency radiation interference; a high-frequency nickel-zinc magnetic ring is installed on the shell 21, and the high-frequency nickel-zinc magnetic ring has low magnetic permeability, very small loss at high frequencies, good heat dissipation, and small size, and can effectively suppress high-frequency conducted interference. The insertion loss can reach more than 90dB when the frequency is greater than 10MHz.

[0046] For clarification, please refer to Figure 2 The feed-through filter 2 is preferably vertically mounted on the conductive plate body 1 through a nut 22, which occupies a small area and is easy and firm to install.

[0047] In this embodiment, please refer to Figure 3 and Figure 4 , the number of gradient filter modules 3 is set to three, and the gradient filter module 3 includes a one-to-one corresponding dual-path filter 31 and a bracket 32; specifically, the rated voltage of the dual-path filter 31 is set to 1500V, and the rated current is set to 900A, which can simultaneously filter the positive and negative paths of the gradient coil, a total of six paths, and can meet the filtering requirements of the 3T high-field magnetic resonance gradient system; in other embodiments, the number of gradient filter modules 3 can also be set to other values, based on the ability to meet the filtering requirements of the high-field magnetic resonance gradient system.

[0048] Based on the above examples, please refer to Figure 3 Both ends of the dual-channel filter 31 are provided with connection terminals 311, and the end surface of the dual-channel filter 31 is provided with a transparent protective cover 312 surrounding the connection terminals 311 for protection, which can reduce safety risks and facilitate observation by staff.

[0049] For further information, please refer to Figure 4 The bracket 32 includes a support plate 321, and the dual-channel filter 31 is fixed on the support plate 321, which can support the dual-channel filter 31; the dual-channel filter 31 is placed on the support plate 321; the two ends of the support plate 321 are respectively provided with a first fixing seat 322 and a second fixing seat 323; the first fixing seat 322 is fixedly connected to the conductive plate body 1; the dual-channel filter 31 is connected to a cable, and the cable is fixed on the second fixing seat 323, which can effectively prevent the cable from being displaced due to the force of its rapid switching of large current during magnetic resonance scanning.

[0050] It should be noted that the radio frequency module 4 preferably includes sixteen radio frequency receiving channels and two radio frequency transmitting channels.

[0051] In this embodiment, please refer to Figure 5 and Figure 6, the signal control filtering module 5 includes several signal filters, which can filter signals such as magnet monitoring and temperature probes, and also filter control circuits such as magnet heating and scanning bed control; specifically, the signal filters are preferably set to three types, namely four twenty-five-channel, five fifteen-channel, and six nine-channel signal filters, with a total of two hundred and twenty-nine channels, which can meet the needs of most magnetic resonance systems.

[0052] It should be noted that the ground wire terminal block 6 includes several grounding terminals for grounding the equipment and will not be blocked; the tube body module 7 preferably includes several cutoff waveguides, magnet helium tubes, and / or gradient water cooling tubes.

[0053] Specifically, the materials of the power filter module, the RF module 4, and the signal control filtering module 5 are preferably the same as those of the conduction plate body 1, and are preferably connected and fixed to the conduction plate body 1 by screws, which is convenient for disassembly, replacement, and later maintenance; the power filter module, the RF module 4, and the signal control filtering module 5 have a large redundancy in design. When the required number of channels is small, it can be solved by replacing the module, or by pasting and blocking the remaining unused screw holes with copper foil paper.

[0054] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-performance magnetic resonance conduction plate, characterized in that, include: A conductive plate body (1), wherein a strong current region (11) and a weak current region (12) are provided on the conductive plate body (1); A power filter module, the power filter module being mounted on the conductive plate (1) and located in the high-voltage area (11); A plurality of gradient filter modules (3), wherein the plurality of gradient filter modules (3) are all mounted on the conductive plate body (1) and are located in the high-voltage area (11); A radio frequency module (4), the radio frequency module (4) being mounted on the conductive plate (1) and located within the weak current area (12); A signal control filter module (5), the signal control filter module (5) being mounted on the conductive plate body (1) and located in the weak current area (12); A ground wire terminal block (6), the ground wire terminal block (6) being mounted on the conductive plate body (1) and located in the weak current area (12); A tube body module (7), wherein the tube body module (7) is mounted on the conductive plate body (1) and is located in the weak current area (12).

2. The high-performance magnetic resonance conduction plate according to claim 1, characterized in that, The material of the conductive plate (1) is mirror-finished stainless steel; And / or, the thickness of the conductive plate (1) is set to 3 mm; And / or, the specifications of the conductive plate body (1) are set to 800×350 mm.

3. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that The power supply filter module comprises a plurality of feed-through filters (2).

4. A high-performance magnetic resonance conduction plate according to claim 3, wherein The power supply filter module comprises twenty-four feed-through filters (2); And / or, the feed-through filter (2) is configured as a τ-type feed-through power supply filter; And / or, the feed-through filter (2) comprises a housing (21), both ends of the housing (21) are provided with through-hole capacitors, and a high-frequency nickel-zinc magnetic ring is installed on the housing (21); And / or, the feed-through filter (2) is vertically mounted on the conductive plate body (1) via a nut (22).

5. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that, The gradient filter module (3) comprises a dual-path filter (31) and a bracket (32).

6. The high-performance magnetic resonance conduction plate according to claim 5, characterized in that, The rated voltage of the dual-channel filter (31) is set to 1500V, and the rated current is set to 900A; And / or, both ends of the dual-channel filter (31) are provided with connection terminals (311), and an end surface of the dual-channel filter (31) is provided with a transparent protective cover (312) arranged around the connection terminals (311); And / or, the bracket (32) comprises a support plate (321), the dual-channel filter (31) is placed on the support plate (321); two ends of the support plate (321) are respectively provided with a first fixing seat (322) and a second fixing seat (323); the first fixing seat (322) is fixedly connected to the conductive plate body (1); the dual-channel filter (31) is connected to a cable, and the cable is fixed to the second fixing seat (323); And / or, the number of the gradient filter modules (3) is set to three.

7. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that, The radio frequency module (4) comprises sixteen radio frequency receiving channels and two radio frequency transmitting channels.

8. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that The signal control filtering module (5) comprises a plurality of signal filters.

9. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that, The ground wire terminal block (6) comprises a plurality of grounding terminals.

10. A high-performance magnetic resonance conduction plate according to claim 1, characterized in that, The tube body module (7) comprises a plurality of cutoff waveguide tubes, magnet helium tubes and / or gradient water cooling tubes.

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