Radio frequency probe, magnetic resonance coil structure and method of manufacturing thereof

Abstract

The present application relates to a kind of radio frequency probe, magnetic resonance coil structure and its manufacturing method.The magnetic resonance coil structure includes: cold plate for transferring cold quantity;And radio frequency coil is arranged on the cold plate;Radio frequency coil is attached between the cold plate by negative pressure mode;When cold plate refrigerates radio frequency coil, since radio frequency coil and cold plate are closely attached, the cold quantity of cold plate can be effectively transferred to radio frequency coil, to effectively reduce the temperature of radio frequency coil, improve refrigeration efficiency, realize efficient cold conduction, to improve the signal-to-noise ratio of radio frequency coil, while also guarantee the use performance of radio frequency probe, guarantee the imaging effect of magnetic resonance equipment.Moreover, the radio frequency coil is attached to the cold plate by negative pressure mode, without using embedding mode or 3D printing mode, reduce the complexity of process, easy to realize.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic resonance equipment, in particular to a magnetic resonance coil structure, a radio frequency probe and a manufacturing method of the magnetic resonance coil. BACKGROUND

[0002] Compared with normal temperature coils, low temperature probes have the advantage of high signal-to-noise ratio (SNR), and the key to realizing low temperature probes lies in how to efficiently cool the radio frequency coil in the low temperature probe. The radio frequency coil is a core component of a magnetic resonance / nuclear magnetic resonance imaging system, and as the front end of the signal receiving chain, it plays an important role in imaging quality. The radio frequency coil is used for transmitting radio frequency pulses and receiving MR signals, and the performance of the radio frequency coil will directly affect the improvement of the signal-to-noise ratio of imaging.

[0003] When the radio frequency coil is working, heat will be generated, and the heat will affect the performance of the radio frequency coil, and then affect the signal-to-noise ratio. Therefore, the radio frequency coil is usually installed on a cold conducting material to dissipate heat through the cold conducting material to reduce the working temperature of the radio frequency coil. However, at present, the coil is embedded on the cold conducting material by slotting or printed on the cold conducting material by 3D printing, and these methods are complex in process, difficult to realize, high in cost, or there is a gap between the coil and the cold conducting material, which affects the performance of the coil. SUMMARY

[0004] Therefore, the present application provides a radio frequency probe capable of guaranteeing fitting and reducing cost, a magnetic resonance coil structure and a manufacturing method thereof.

[0005] A magnetic resonance coil structure comprises:

[0006] a cold conducting plate for transferring cold energy; and

[0007] a radio frequency coil arranged on the cold conducting plate;

[0008] The radio frequency coil and the cold conducting plate are fitted by a negative pressure mode.

[0009] In one embodiment, the radio frequency coil and the cold conducting plate are in a vacuum state.

[0010] In one embodiment, the radio frequency coil is connected to the cold conducting plate by a sealing glue.

[0011] In one embodiment, the radio frequency coil is in a flexible film state, the cold conducting plate has an arc-shaped accommodating groove, and the radio frequency coil is fitted to the inner wall of the accommodating groove.

[0012] In one of the embodiments, the cold plate is made of a cold conducting material, and the radio frequency coil comprises a base and a circuit fixed to the surface of the base and / or in the base, and the base of the radio frequency coil is made of a cold conducting material.

[0013] In one of the embodiments, the magnetic resonance coil structure further comprises a vacuum assembly, the vacuum assembly comprises a connecting pipe and a one-way valve, the one-way valve is arranged on the connecting pipe, the cold plate has a connecting hole, the connecting pipe is communicated with the connecting hole, and the connecting pipe is used to connect a vacuumizing device.

[0014] A radio frequency probe comprises a probe shell, a refrigeration assembly, and the coil structure as claimed in any one of the above technical features, the cold plate in the coil structure is connected to the refrigeration assembly and arranged in the probe shell.

[0015] A manufacturing method of a magnetic resonance coil structure, the manufacturing method comprises:

[0016] The radio frequency coil edge is sealingly connected with the cold plate;

[0017] The radio frequency coil is attached to the cold plate by a negative pressure mode.

[0018] In one of the embodiments, the negative pressure mode is a vacuumizing mode.

[0019] A manufacturing method of a magnetic resonance coil structure as claimed in any one of the above technical features, the manufacturing method comprises:

[0020] The radio frequency coil edge is sealingly connected with the cold plate;

[0021] The radio frequency coil is attached to the cold plate by a vacuumizing mode.

[0022] After the above technical solutions are adopted, the present application has at least the following technical effects:

[0023] The radio frequency probe, the magnetic resonance coil structure and the manufacturing method thereof, the radio frequency coil of the magnetic resonance coil structure is arranged on the surface of the cold plate, and the radio frequency coil is fixed to the cold plate by a negative pressure adsorption mode, so as to ensure that the radio frequency coil is closely attached to the surface of the cold plate. The magnetic resonance coil structure of the present application closely attaches the radio frequency coil to the cold plate by a negative pressure adsorption mode, when the cold plate cools the radio frequency coil, since the radio frequency coil is closely attached to the cold plate, the cold energy of the cold plate can be effectively transferred to the radio frequency coil, so as to effectively reduce the temperature of the radio frequency coil, improve the refrigeration efficiency, realize efficient cold conduction, improve the signal-to-noise ratio of the radio frequency coil, and ensure the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment. Moreover, the radio frequency coil can be installed to the cold plate by a negative pressure mode, without using an embedding mode or a 3D printing mode, so as to reduce the complexity of the process and be easy to realize. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of a magnetic resonance coil structure according to an embodiment of the present application, as shown in

[0025] Figure 2 A perspective view of a magnetic resonance coil structure according to an embodiment of the present application, as shown in Figure 1 A perspective view of a magnetic resonance coil structure according to an embodiment of the present application, as shown in

[0026] 100, magnetic resonance coil structure; 110, cold plate; 111, accommodating groove; 120, radio frequency coil; 130, vacuum assembly; 131, vacuum pump; 132, connecting assembly; 1321, connecting pipe; 1322, plug; 1323, one-way valve. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways without departing from the spirit thereof and it is understood that variations can be made in view of the above teachings or can be obtained from practice of the application. Therefore, the present application is not limited to the specific embodiments disclosed below, but only constrained by the scope of the claims.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] See Figure 1 and Figure 2 This invention provides a magnetic resonance coil structure 100, which is applied in the radio frequency (RF) probe of a magnetic resonance imaging (MRI) device. The MRI device can scan and image a subject. When imaging a subject using the MRI device, the RF probe is located in the magnet aperture of the MRI machine, working in conjunction with the MRI machine to image the subject within the magnet aperture. The RF coil 120 here can transmit radio frequency pulses and / or receive magnetic resonance signals. The subject can be an animal, such as a laboratory mouse or rabbit.

[0034] The radio frequency coil in the low temperature probe is prone to generate thermal noise during operation, which affects the performance of the radio frequency coil and further affects the signal-to-noise ratio. Therefore, the radio frequency coil is usually installed on the cold conducting material, and the radio frequency coil is in a low temperature (for example, superconducting) state through the cold conducting material to improve the signal-to-noise ratio of the radio frequency coil. However, at present, the coil is embedded on the cold conducting material by slotting or printed on the cold conducting material by 3D printing, which has complex process and large implementation difficulty, and there is a gap between the coil and the cold conducting material, which affects the performance of the coil.

[0035] Therefore, the application provides a novel magnetic resonance coil structure 100, which can effectively reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, realize efficient heat conduction, and improve the signal-to-noise ratio of the radio frequency coil 120. Moreover, the radio frequency coil 120 can be installed on the cold conducting plate 110 by negative pressure method, without using embedding method or 3D printing method, which reduces the complexity of the process and is easy to implement. The specific structure of the magnetic resonance coil structure 100 in an embodiment is introduced below.

[0036] Referring to Figure 1 and Figure 2 In an embodiment, the magnetic resonance coil structure 100 includes a cold conducting plate 110 and a radio frequency coil 120. The radio frequency coil 120 is located on the cold conducting plate 110. The radio frequency coil 120 and the cold conducting plate 110 are attached by negative pressure method.

[0037] The radio frequency coil 120 is used to emit radio frequency pulses and / or receive magnetic resonance signals, and the cold conducting plate 110 is provided in the magnetic resonance coil structure 100. The cold conducting plate 110 is made of cold conducting material (for example, sapphire) and is connected with the refrigeration component of the radio frequency probe, so that the cold conducting plate 110 is at a lower temperature. The radio frequency coil 120 is arranged on the surface of the cold conducting plate 110. In this way, the cold conducting plate 110 can transfer cold to the radio frequency coil 120 to reduce the temperature of the radio frequency coil 120.

[0038] To avoid the gap between the radio frequency coil 120 and the cold conducting plate 110, the magnetic resonance coil structure 100 of the application fixes the radio frequency coil 120 on the cold conducting plate 110 by negative pressure method, and makes the surface of the radio frequency coil 120 attach to the surface of the cold conducting plate 110. In this way, the gap between the radio frequency coil 120 and the cold conducting plate 110 can be minimized or even eliminated, so that the radio frequency coil 120 directly attaches to the cold conducting plate 110, and the cold is effectively transferred to the radio frequency coil 120.

[0039] Referring to Figure 1 and Figure 2The magnetic resonance coil structure 100 of the present application makes the radio frequency coil 120 closely adhere to the cold plate 110 through a negative pressure mode, and when the cold plate 110 cools the radio frequency coil 120, the negative pressure mode can make the radio frequency coil 120 closely adhere to the cold plate 110, and then the cold energy of the cold plate 110 can be effectively transmitted to the radio frequency coil 120 to reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, realize efficient cooling, and improve the signal-to-noise ratio of the radio frequency coil 120, while also ensuring the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment.

[0040] Moreover, the radio frequency coil 120 can be installed on the cold plate 110 through a negative pressure mode, without using embedding or 3D printing, reducing the complexity of the process, being easy to realize, and also reducing production costs.

[0041] It is worth noting that in the present application, the radio frequency coil 120 and the cold plate 110 are mainly introduced to adhere through a negative pressure mode, to ensure that the radio frequency coil 120 is adhered to the cold plate 110, and then to ensure the cooling effect of the cold plate 110 on the radio frequency coil 120. Of course, in other embodiments of the present application, the radio frequency coil 120 can be further mechanically fixed by increasing a fixing member to the radio frequency coil 120 adhered to the cold plate 110 in a negative pressure state, and fixed to the cold plate 110.

[0042] Referring to Figure 1 and Figure 2 In an embodiment, the radio frequency coil 120 and the cold plate 110 are in a vacuum state. That is, the magnetic resonance coil structure 100 of the present application makes the radio frequency coil 120 closely adhere to the cold plate 110 through vacuum extraction, eliminating the spacing between the radio frequency coil 120 and the cold plate 110, to effectively reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, and realize efficient cooling.

[0043] Referring to Figure 1 and Figure 2 In an embodiment, the radio frequency coil 120 is connected to the cold plate 110 by a sealing glue. That is, the sealing glue is coated on the edge of the radio frequency coil 120, and the edge of the radio frequency coil 120 is sealed and arranged on the cold plate 110 by the sealing glue to avoid air entering the edge of the radio frequency coil 120 during vacuum extraction. Alternatively, the sealing glue is a low-temperature glue to ensure the bonding performance in a low-temperature environment.

[0044] Referring to Figure 1 and Figure 2In an embodiment, the radio frequency coil 120 is in a flexible film state, and the cold guide plate 110 has an arc-shaped accommodating groove 113, and the inner wall of the accommodating groove 113 is in a circular arc shape, facilitating the radio frequency probe to image the head of the subject. The radio frequency coil 120 is attached to the inner wall of the accommodating groove 113.

[0045] In the direction shown in Figure 1 , the cold guide plate 110 has a recessed accommodating groove 113, which is arc-shaped, and the radio frequency coil 120 is located in the arc-shaped accommodating groove 113, and the bottom of the radio frequency coil 120 is attached to the arc-shaped inner wall of the accommodating groove 113 by negative pressure.

[0046] That is, the radio frequency coil 120 is tightly attached to the inner wall of the accommodating groove 113 by negative pressure, eliminating the gap between the radio frequency coil 120 and the cold guide plate 110. In this way, when the cold guide plate 110 cools the radio frequency coil 120, the cold energy of the cold guide plate 110 can be effectively transferred to the radio frequency coil 120 to effectively reduce the temperature of the radio frequency coil 120, improve the cooling efficiency, realize efficient cooling, and improve the signal-to-noise ratio of the radio frequency coil 120, while ensuring the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment.

[0047] Optionally, the shape of the cold guide plate 110 is part of a cylinder. The upper surface of the cold guide plate 110 is provided with the accommodating groove 113, and the radio frequency coil 120 is adsorbed by negative pressure to attach to the inner wall of the accommodating groove 113. For example, the cold guide plate 110 is semicircular, as shown in Figure 1 , the end face of the cold guide plate 110 is semicircular, and the top surface of the cold guide plate 110 is planar. The semicircular planar structure facilitates the installation and fixation of the cold guide plate 110. The top plane of the cold guide plate 110 is provided with the accommodating groove 113, which can form a semi-enclosed shape for the subject, facilitating scanning and imaging.

[0048] Optionally, the length of the accommodating groove 113 is less than the length of the cold guide plate 110. The length refers to the axial direction of the cold guide plate 110 shown in Figure 1 . After the length of the accommodating groove 113 is less than the length of the cold guide plate 110, the left side of the cold guide plate 110 is provided with the recessed accommodating groove 113, and the right side is still provided with the semicircular cylinder. That is, the front end of the cold guide plate 110 is provided with the accommodating groove 113.

[0049] Referring to Figure 1 and Figure 2In an embodiment, the accommodating groove 113 is semicircular. That is, the cross-sectional shape of the accommodating groove 113 is a part of a circle. When the radio frequency coil 120 is installed into the accommodating groove 113, the negative pressure adsorption can make the radio frequency coil 120 adhere to the inner wall of the arc-shaped accommodating groove 113, so as to ensure the cooling effect of the radio frequency coil 120.

[0050] Referring to Figure 1 and Figure 2 , the magnetic resonance coil structure 100 of the present application, the radio frequency coil 120 is adsorbed and fixed on the cooling guide plate 110 by the direction of vacuum adsorption, so that the radio frequency coil 120 can be tightly adsorbed in the accommodating groove 113, and the space between the radio frequency coil 120 and the inner wall of the accommodating groove 113 is eliminated, so that the cooling guide plate 110 can effectively transfer the cold to the radio frequency coil 120, ensure the cooling effect of the radio frequency coil 120, and ensure the signal-to-noise ratio.

[0051] The magnetic resonance coil structure 100 of the present application, the radio frequency coil 120 and the accommodating groove 113 of the cooling guide plate 110 are tightly adhered by the negative pressure mode, when the cooling guide plate 110 cools the radio frequency coil 120, because the radio frequency coil 120 and the cooling guide plate 110 are tightly adhered, the cooling guide plate 110 can effectively transfer the cold to the radio frequency coil 120, so as to reduce the temperature of the radio frequency coil 120, improve the cooling efficiency, realize efficient cooling, improve the signal-to-noise ratio of the radio frequency coil 120, and also ensure the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment. Moreover, the radio frequency coil 120 can be installed on the cooling guide plate 110 by the negative pressure adsorption mode, without using the embedding mode or the 3D printing mode, so as to reduce the complexity of the process and be easy to realize.

[0052] Referring to Figure 1 and Figure 2 In an embodiment of the present application, the cooling guide plate 110 is made of a cooling material, the radio frequency coil 120 includes a base and a circuit fixed on the surface of the base and / or in the base, and the base of the radio frequency coil 120 is made of a cooling material. The cooling guide plate 110 is made of a cooling material, which can ensure the cooling effect. The circuit includes circuit structures and the like. The circuit is arranged on the surface of the base of the radio frequency coil 120 or in the base. The base of the radio frequency coil 120 is also made of a cooling material, so that the cold can be effectively transferred to the radio frequency coil 120, and the cooling effect of the radio frequency coil 120 is ensured. The cooling material of the base can be sapphire, ceramic material or other materials with good cooling effect. In some embodiments, the base of the radio frequency coil 120 can be flexible, and the radio frequency coil 120 is in a flexible film state. In some embodiments, the base can be controlled to be in a flexible state by controlling the thickness of the base within a small range. The flexible base can make the radio frequency coil better adhere to the cooling guide plate, and enhance the cooling effect.

[0053] Referring to Figure 1 and Figure 2 In an embodiment of the present application, the magnetic resonance coil structure 100 comprises a vacuum assembly 130, the vacuum assembly 130 is communicated with the cold guide plate 110, and the vacuum assembly 130 evacuates the cold guide plate 110. That is, the vacuum assembly 130 makes the cold guide plate 110 and the radio frequency coil 120 in a vacuum state, so as to ensure that the cold guide plate 110 and the radio frequency coil 120 are closely attached, so that the cold of the cold guide plate 110 can be effectively transmitted to the radio frequency coil 120, so as to reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, realize efficient cold conduction, improve the signal-to-noise ratio of the radio frequency coil 120, and also ensure the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment.

[0054] In an embodiment, the vacuum assembly 130 comprises a vacuum pump 131 and at least one connecting group 132, one end of the connecting group 132 is connected to the vacuum pump 131, and the other end of the connecting group 132 is communicated with the cold guide plate 110. The vacuum pump 131 evacuates the cold guide plate 110 through the connecting group 132, so that the radio frequency coil 120 is attached to the cold guide plate 110.

[0055] That is, the magnetic resonance coil structure 100 of the present application makes the radio frequency coil 120 attached in the accommodating groove 113 of the cold guide plate 110 through the vacuum evacuation form, and closely attached to the inner wall of the accommodating groove 113, so as to eliminate the spacing between the radio frequency coil 120 and the cold guide plate 110, effectively reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, and realize efficient cold conduction.

[0056] The vacuum pump 131 is the power source of the vacuum assembly 130, and provides a vacuum environment through the vacuum pump 131. The connecting group 132 is a communication component of the vacuum pump 131 and the cold guide plate 110, one end of the connecting group 132 is connected to the vacuum pump 131, and the other end of the connecting group 132 is connected to the cold guide plate 110. The radio frequency coil 120 is sealedly installed on the cold guide plate 110. When the vacuum pump 131 works, the vacuum pump 131 can evacuate the inside of the cold guide plate 110 through the connecting group 132, so as to make the radio frequency coil 120 and the inner wall of the accommodating groove 113 have a vacuum degree, avoid air entering between the radio frequency coil 120 and the inner wall of the accommodating groove 113, and also ensure that the radio frequency coil 120 can be reliably attached to the inner wall of the accommodating groove 113 through the vacuum environment.

[0057] In the embodiment, the number of the connection groups 132 is one, and the end of the connection group 132 connected to the cold plate 110 is arranged at the bottom end of the cold plate 110. Of course, in other embodiments of the present application, the number of the connection groups 132 can also be multiple, and one end of the multiple connection groups 132 is connected to one vacuum pump 131 or corresponds to one vacuum pump 131 respectively, and the other end of the multiple connection groups 132 is arranged at intervals on the arc surface 111 of the cold plate 110.

[0058] Referring to Figure 1 and Figure 2 In an embodiment, the surface of the cold plate 110 on which the radio frequency coil 120 is mounted has a through hole, and the radio frequency coil 120 can seal the through hole after being mounted on the cold plate 110. That is, the cold plate 110 has a through hole on the inner wall of the accommodating groove 113, which can communicate with the inside of the cold plate 110, and the vacuum pump 131 can make the cold plate 110 adsorb the radio frequency coil 120 through the through hole, so that the radio frequency coil 120 is tightly attached to the cold plate 110.

[0059] When the radio frequency coil 120 is mounted in the accommodating groove 113 of the cold plate 110, the radio frequency coil 120 covers the through hole and makes the edge of the radio frequency coil 120 attached to the inner wall of the accommodating groove 113, so that the radio frequency coil 120 seals the through hole. When the vacuum pump 131 pumps the cold plate 110 through the connection group 132, the radio frequency coil 120 is adsorbed, so that the radio frequency coil 120 is attached to the inner wall of the accommodating groove 113, which can effectively cool the radio frequency coil 120.

[0060] Referring to Figure 1 and Figure 2 In an embodiment, the connection group 132 includes a connection pipe 1321 and a plug 1322, the cold plate 110 has a mounting hole communicating with the inside, one end of the connection pipe 1321 is connected to the vacuum pump 131, the other end of the connection pipe 1321 is mounted with the plug 1322, and the plug 1322 is mounted in the mounting hole.

[0061] The connection pipe 1321 is used to realize the communication between the cold plate 110 and the vacuum pump 131. Moreover, the plug 1322 is mounted at the end of the connection pipe 1321, the connection pipe 1321 is mounted in the mounting hole of the cold plate 110 through the plug 1322, and after the plug 1322 is mounted in the mounting hole, the sealing between the plug 1322 and the cold plate 110 can be ensured, and the other end of the connection pipe 1321 is connected to the vacuum pump 131. The vacuum pump 131 communicates with the inside of the cold plate 110 through the connection pipe 1321 and the plug 1322, and pumps the cold plate 110.

[0062] Optionally, the mounting hole is a threaded hole, and correspondingly, the plug 1322 is a hollow bolt, so that the sealing of the connection group 132 and the cold plate 110 is ensured by the cooperation of the bolt and the threaded hole in a vacuum state. Of course, in other embodiments of the present application, the mounting hole and the plug 1322 can also be other structures that can realize sealing.

[0063] Referring to Figure 1 and Figure 2 In an embodiment, the connection group 132 further comprises a one-way valve 1323, which is arranged in the connection pipe 1321. The one-way valve 1323 is arranged in the connection pipe 1321. The one-way valve 1323 is arranged in the connection pipe 1321 to allow air to flow in one direction, so as to prevent air from entering the cold plate 110 through the vacuum pump 131, and to ensure the vacuum degree between the radio frequency coil 120 and the cold plate 110.

[0064] In another embodiment of the present application, the magnetic resonance coil structure 100 further comprises a fixing member. The fixing member is a plurality of mechanical fixing members, and the plurality of mechanical fixing members fix the radio frequency coil 120 to the cold plate 110. That is, the fixing member further fixes the radio frequency coil 120 to the surface of the cold plate 110 by a mechanical method. In some embodiments, the fixing member comprises a fixing plate made of a cold material, such as sapphire. The fixing plate is arranged on the outer surface of the radio frequency coil 120, so that the radio frequency coil 120 is located between the fixing plate and the cold plate 110. In this way, the radio frequency coil 120 can be tightly attached to the cold plate 110, and the cooling effect of the radio frequency coil 120 can be further improved.

[0065] Referring to Figure 1 and Figure 2 In the magnetic resonance coil structure 100 of the present application, the radio frequency coil 120 is placed in the accommodating groove 113 of the cold plate 110, and the edge of the radio frequency coil 120 is adhered to the inner wall of the accommodating groove 113 of the cold plate 110 by low-temperature glue, so as to ensure that the edge of the radio frequency coil 120 is tightly attached to the inner wall of the accommodating groove 113. The plug 1322, the connection pipe 1321, the one-way valve 1323 and the vacuum pump 131 are normally connected. The vacuum pump 131 is started to vacuumize the sealed space between the radio frequency coil 120 and the inner wall of the accommodating groove 113 of the cold plate 110, so that the radio frequency coil 120 is tightly attached to the cold plate 110 in a vacuum environment, thereby realizing efficient heat transfer and keeping the radio frequency coil 120 in a low-temperature state.

[0066] The magnetic resonance coil structure 100 of the present application is attached to the cold guide plate 110 through the radio frequency coil 120 to effectively transfer to the radio frequency coil 120, so as to effectively reduce the temperature of the radio frequency coil 120, improve the refrigeration efficiency, realize efficient cold guide, improve the signal-to-noise ratio of the radio frequency coil 120, and also ensure the use performance of the radio frequency probe and the imaging effect of the magnetic resonance equipment. Moreover, the radio frequency coil 120 can be adsorbed and fixed to the cold guide plate 110 through a negative pressure mode without using embedding or 3D printing mode, thereby reducing the complexity of the process and being easy to realize.

[0067] The present application also provides a radio frequency probe, which comprises a probe shell, a refrigeration assembly and the magnetic resonance coil structure 100 of any one of the above embodiments, wherein the cold guide plate 110 in the magnetic resonance coil structure 100 is connected to the refrigeration assembly and arranged in the probe shell. The cold guide plate 110 of the magnetic resonance coil structure 100 is located at the front end of the probe shell, and the cold guide plate 110 is connected to the refrigeration assembly, so that the refrigeration assembly transfers cold energy to the cold guide plate 110. It is worth noting that the structure of the refrigeration assembly is a prior art, which is not described here. After the radio frequency probe adopts the magnetic resonance coil structure 100 of the above embodiments, the cooling effect of the radio frequency probe can be ensured, the imaging quality can be ensured, and the burn of the examinee can be avoided.

[0068] The present application also provides a magnetic resonance equipment, which comprises a magnetic resonance machine body and the radio frequency probe of the above embodiments, wherein the magnetic resonance machine body has a magnet hole, the radio frequency probe is located in the magnet hole, and the magnetic resonance machine body cooperates with the radio frequency probe to perform imaging operation on the examinee in the magnet hole. The magnetic resonance equipment of the present application cooperates with the magnetic resonance coil structure 100 of the above embodiments to ensure the imaging quality and avoid the frostbite of the examinee.

[0069] The present application also provides a manufacturing method of the magnetic resonance coil structure 100, which can be used to manufacture the magnetic resonance coil structure in the above embodiments, and the manufacturing method comprises:

[0070] The edge of the radio frequency coil 120 is sealingly connected with the cold guide plate 110;

[0071] The radio frequency coil 120 is attached to the cold guide plate 110 through a negative pressure mode.

[0072] When the magnetic resonance coil structure 100 is manufactured, the radio frequency coil 120 and the cold guide plate 110 are manufactured first, the radio frequency coil 120 is arranged on the cold guide plate 110, and the edge of the radio frequency coil 120 is sealingly connected to the cold guide plate 110. The radio frequency coil 120 is adsorbed and fixed to the cold guide plate 110 through a negative pressure mode, so that the radio frequency coil 120 is tightly attached to the cold guide plate 110.

[0073] The radio frequency coil 120 is closely attached to the cold plate 110 through the negative pressure mode, when the cold plate 110 cools the radio frequency coil 120, because the radio frequency coil 120 is closely attached to the cold plate 110, the cold energy of the cold plate 110 can be effectively transferred to the radio frequency coil 120, so as to reduce the temperature of the radio frequency coil 120, improve the cooling efficiency, realize efficient cooling, and improve the signal-to-noise ratio of the radio frequency coil 120, and at the same time, the use performance of the radio frequency probe can be ensured, and the imaging effect of the magnetic resonance equipment can be ensured.

[0074] In an embodiment, the negative pressure mode is a vacuum extraction mode, that is, the radio frequency coil 120 and the cold plate 110 are in a vacuum state. The magnetic resonance coil structure 100 of the present application closely attaches the radio frequency coil 120 to the cold plate 110 through the vacuum extraction mode, eliminates the spacing between the radio frequency coil 120 and the cold plate 110, effectively reduces the temperature of the radio frequency coil 120, improves the cooling efficiency, and realizes efficient cooling.

[0075] The technical features of the above-mentioned embodiments can be combined arbitrarily, in order to make the description simple, not all possible combinations of the technical features in the above-mentioned embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0076] The above-mentioned embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A magnetic resonance coil structure (100), characterized by The application relates to a coil structure (100) for a magnetic resonance imaging system, comprising: a cold conducting plate (110) for conducting cold; and a radio frequency coil (120) arranged on the cold conducting plate (110); wherein the radio frequency coil (120) is in a flexible film state, the cold conducting plate (110) has an arc-shaped accommodating groove (113), and the radio frequency coil (120) is attached to the inner wall of the accommodating groove (113); the radio frequency coil (120) comprises a base body and a circuit fixed to the surface of the base body and / or in the base body, and the base body of the radio frequency coil (120) is made of a cold conducting material; the radio frequency coil (120) is attached to the cold conducting plate (110) through a negative pressure mode, the radio frequency coil (120) is connected to the cold conducting plate (110) through sealing glue around the radio frequency coil (120), and the radio frequency coil (120) is tightly attached to the arc-shaped inner wall of the accommodating groove (113); a vacuum assembly (130) is arranged, the vacuum assembly (130) comprises a connecting pipe (1321) and a one-way valve (1323), the one-way valve (1323) is arranged on the connecting pipe (1321), the cold conducting plate (110) has a connecting hole, the connecting pipe is communicated with the connecting hole, and the connecting pipe is used for connecting a vacuumizing device; and the radio frequency coil (120) and the cold conducting plate (110) are in a vacuum state. The cold conducting plate (110) is made of a cold conducting material, the radio frequency coil (120) comprises a base body and a circuit fixed to the surface of the base body and / or in the base body, and the base body of the radio frequency coil (120) is made of a cold conducting material. The coil structure (100) is connected with a refrigeration assembly and arranged in a probe shell. The manufacturing method comprises the following steps: sealingly connecting the edge of the radio frequency coil (120) to the cold conducting plate (110); and attaching the radio frequency coil (120) to the cold conducting plate (110) through a negative pressure mode. The negative pressure mode is a vacuumizing mode. The manufacturing method comprises the following steps: sealingly connecting the edge of the radio frequency coil (120) to the cold conducting plate (110); and attaching the radio frequency coil (120) to the cold conducting plate (110) through a vacuumizing mode.

2. The magnetic resonance coil structure (100) according to claim 1, characterized in that ​ 3. A radio frequency probe, characterized by, ​ 4. A method of manufacturing a magnetic resonance coil structure (100) as claimed in claim 1 or 2, characterized in that, ​ ​ ​ 5. The method of manufacturing a magnetic resonance coil structure (100) according to claim 4, characterized in that ​ 6. A method of manufacturing a magnetic resonance coil structure (100) as claimed in claim 1 or 2, characterized in that, ​ ​ ​

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