Magnetic resonance coil

Abstract

The utility model provides a magnetic resonance coil. The magnetic resonance coil comprises one or more coil modules. The coil module comprises a coil unit, a light-emitting unit and a power supply circuit, the light-emitting unit is arranged on a metal conductor of the coil unit, the power supply circuit is electrically connected with the light-emitting unit, and the power supply circuit can make the light-emitting unit emit light. Therefore, when a radio frequency field is generated through the coil unit to carry out magnetic resonance imaging scanning on a patient, the light emitting unit can emit light under the cooperation of the power supply circuit and the light emitting unit, and the light emitting unit is arranged on the coil unit, namely, the light emitting unit is equivalent to at least part of the outline of a magnetic resonance coil or at least part of the outline of the coil unit in vision; therefore, the relatively closed environment in the scanning cavity is improved, the nervous mood of a patient is relieved, the clinical experience of the patient is improved, and the science and technology feeling and the product competitiveness of the magnetic resonance coil are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic resonance imaging, in particular to a magnetic resonance coil. Background Art

[0002] The nuclear magnetic resonance phenomenon was first discovered by the research team of Bloch and Purcell in 1946. Its basic principle is: under the action of an external magnetic field, some protons (including hydrogen protons in the human body) that precess around the main magnetic field (external magnetic field) will increase their precession angle under the action of a short radio frequency wave; when the radio frequency wave stops, those protons will gradually return to their original state and release radio frequency signals with the same frequency as the excitation wave. This physical phenomenon is called nuclear magnetic resonance. In medical applications, the "nucleus" is removed and called magnetic resonance. Magnetic resonance imaging technology uses this principle. By adding a pulse gradient magnetic field to the main magnetic field, the atomic nuclei in the human body at the required position are selectively excited, and then the nuclear magnetic resonance signals generated by the atomic nuclei are received. Finally, Fourier transform is performed in a computer to frequency encode and phase encode these signals, thereby establishing a complete magnetic resonance image.

[0003] The magnetic resonance coil of the magnetic resonance system is a component that generates radio frequency fields and receives and transmits signals. It is set in the scanning cavity. During scanning, the patient is pushed into the scanning cavity by the scanning bed. The scanning cavity is a relatively claustrophobic space. The patient is prone to tension when in it, which is not conducive to improving the patient's clinical experience. Utility Model Content

[0004] The purpose of the utility model is to provide a magnetic resonance coil, which can allow patients to relieve nervousness through the luminous coil module during magnetic resonance scanning and improve clinical experience.

[0005] In order to solve the above technical problems, based on one aspect of the present utility model, the present utility model provides a magnetic resonance coil, which includes a plurality of coil modules, and one or more of the coil modules include:

[0006] a coil unit, the coil unit comprising a metal conductor;

[0007] a light emitting unit, which is arranged on the metal conductor of the coil unit;

[0008] A power supply circuit is electrically connected to the light emitting unit and is used to make the light emitting unit emit light.

[0009] Optionally, the light emitting unit may emit light to illustrate at least a partial outline of the magnetic resonance coil or at least a partial outline of the coil unit.

[0010] Optionally, the material of the light-emitting unit includes light-emitting fiber.

[0011] Optionally, the light-emitting unit includes a conductor and a light-emitting layer, the light-emitting layer is electrically connected to the conductor, and the conductor is connected to the power supply circuit.

[0012] Optionally, the coil unit and the light emitting unit are integrally constructed.

[0013] Optionally, the coil unit 10 formed by the metal conductor is a ring coil, a rectangular coil, a butterfly coil, a saddle coil or a birdcage coil; the light-emitting unit is wound around the surface of the coil unit along an extension path of the coil unit, and both ends of the light-emitting unit are connected to the power supply circuit.

[0014] Optionally, when the coil unit 10 is a ring-shaped coil, the coil unit is in a circular ring shape, an elliptical ring shape or a rectangular shape.

[0015] Optionally, the coil module further includes a tuning and detuning circuit, which is electrically connected to the coil unit and is used for tuning or detuning the coil unit.

[0016] Optionally, the coil module includes a substrate, the substrate is connected to the coil unit, and the power supply circuit and the detuning circuit are both integrated on the substrate.

[0017] Optionally, the coil units of a plurality of the coil modules are arranged in rows and columns to form a coil array, and the light-emitting unit is disposed on a metal conductor corresponding to an edge portion of the coil array.

[0018] Optionally, a plurality of the coil modules (100) are arranged on a flexible carrier, and the flexible carrier is fabric or fur.

[0019] Based on another aspect of the present invention, the magnetic resonance coil provided by the present invention comprises:

[0020] A carrier, made of a hard material or a flexible material;

[0021] A coil unit, carried by the carrier, the coil unit comprising a metal conductor, a light-emitting layer is arranged on the metal conductor, or a light-emitting fiber is arranged on the metal conductor;

[0022] The light-emitting layer or the light-emitting fiber can emit light to show at least a partial outline of the magnetic resonance coil or at least a partial outline of the coil unit.

[0023] Optionally, a luminous fiber is disposed on the carrier, and the luminous fiber can emit light in response to a user's touch.

[0024] Optionally, the hard material is a polycarbonate material, and the flexible material is an EVA material or fabric.

[0025] In summary, in the magnetic resonance coil provided by the utility model, the magnetic resonance coil includes one or more coil modules, the coil module includes a coil unit, a light-emitting unit and a power supply circuit, the light-emitting unit is arranged on the metal conductor of the coil unit, the power supply circuit is electrically connected to the light-emitting unit, and the power supply circuit can make the light-emitting unit emit light. In this way, when the coil unit generates a radio frequency field to perform a magnetic resonance imaging scan on the patient, the light-emitting unit can be made to emit light under the cooperation of the power supply circuit and the light-emitting unit, and the light-emitting unit is arranged on the coil unit, that is, visually equivalent to at least part of the outline of the magnetic resonance coil or at least part of the outline of the coil unit emitting light, thereby improving the relatively claustrophobic environment in the scanning cavity, so as to relieve the patient's nervous mood, enhance the patient's clinical experience, and enhance the sense of technology and product competitiveness of the magnetic resonance coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Those skilled in the art should understand that the drawings provided are for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0027] Figure 1 is a schematic diagram of a coil module of a magnetic resonance coil according to a first embodiment of the present utility model;

[0028] Figure 2 is a schematic diagram of a magnetic resonance coil according to a first embodiment of the present utility model;

[0029] Figure 3 is a schematic diagram of a coil array according to a first embodiment of the present utility model;

[0030] Figure 4 is another schematic diagram of the coil array of the first embodiment of the utility model;

[0031] Figure 5 It is a schematic diagram of some coil units in the coil array of the first embodiment of the utility model emitting light;

[0032] Figure 6 is a schematic diagram of a coil module of a magnetic resonance coil according to a second embodiment of the present utility model;

[0033] Figure 7 It is a schematic diagram of a magnetic resonance coil according to the second embodiment of the present invention.

[0034] In the attached figure:

[0035] 100 - coil module; 10 - coil unit; 20 - light emitting unit; 30 - substrate. DETAILED DESCRIPTION

[0036] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0037] As used in the present invention, the singular forms "one", "an" and "the" include plural objects, the term "or" is usually used to include the meaning of "and / or", the term "several" is usually used to include the meaning of "at least one", and the term "at least two" is usually used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" 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 as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which not only include the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in the present invention, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element may be in any orientation such as inside, outside, above, below or on one side of another element, unless otherwise clearly indicated in the content. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] [Example 1]

[0039] For this example, please refer to Figure 1 and Figure 2 To understand, Figure 1 is a schematic diagram of a coil module of a magnetic resonance coil according to a first embodiment of the present utility model, Figure 2 It is a schematic diagram of a magnetic resonance coil according to the first embodiment of the present utility model.

[0040] like Figure 1As shown, the present embodiment provides a magnetic resonance coil for a magnetic resonance system, wherein the magnetic resonance coil comprises one or more coil modules 100, wherein the coil module 100 comprises a coil unit 10, a light emitting unit 20 and a power supply circuit, wherein the coil unit 10 comprises a metal conductor. When radio frequency energy is passed into the metal conductor of the coil unit 10, the coil unit 10 can generate a radio frequency field, thereby performing a magnetic resonance imaging scan on the patient. In practice, the metal conductor of the coil unit 10 can be a copper wire. The light emitting unit 20 is arranged on the metal conductor of the coil unit 10, and the arrangement manner is not specifically limited. The power supply circuit is electrically connected to the light emitting unit 20, and the power supply circuit can provide the required power to the light emitting unit 20, so that the light emitting unit 20 emits light. Furthermore, the light emitted by the light emitting unit 20 can show at least a partial outline of the magnetic resonance coil or can show at least a partial outline of the coil unit 10.

[0041] In this way, when the coil unit 10 generates a radio frequency field to perform a magnetic resonance imaging scan on the patient, the light-emitting unit 20 can be illuminated under the cooperation of the power supply circuit and the light-emitting unit 20. The light-emitting unit 20 is arranged on the coil unit 10, that is, visually equivalent to at least part of the outline of the magnetic resonance coil or at least part of the outline of the coil unit 10 emitting light, thereby improving the relatively claustrophobic environment in the scanning cavity, relieving the patient's nervous mood, improving the patient's clinical experience, and improving the sense of technology and product competitiveness of the magnetic resonance coil. It should be noted that the color of the light generated by the light-emitting unit 20 of different coil modules 100 can be different, and the color of the light-emitting unit 20 is mainly softer, which can give the patient a better visual experience.

[0042] In one embodiment, the material of the light-emitting unit 20 includes a light-emitting fiber. It can be understood by those skilled in the art that the light-emitting polymer active material is coated on the surface of the fiber electrode, that is, the polymer composite fiber loaded with the light-emitting active material. After the AC voltage is applied, the polymer composite light-emitting active layer located on the light-emitting fiber is excited by the electric field in the overlap area, and light-emitting "pixels" are formed. The light-emitting unit of this embodiment is configured based on this principle of the light-emitting fiber. Structurally, it can be understood that the light-emitting fiber includes a conductor (which can be understood as a fiber electrode) and a light-emitting layer (which can be understood as a light-emitting polymer active material), the power supply circuit is electrically connected to the conductor, and the conductor is electrically connected to the light-emitting layer, so that the electric energy of the power supply circuit is transmitted to the light-emitting layer to make the light-emitting layer emit light.

[0043] In one embodiment, the coil unit 10 formed by the metal conductor may be a ring coil, a rectangular coil, a butterfly coil, a saddle coil or a birdcage coil. When the coil unit 10 is a ring coil, the specific shape is not limited, for example, it may be a circular ring, an elliptical ring, a rectangular ring, etc. The light emitting unit 20 is wound on the surface of the coil unit 10 along the extension path of the coil unit, for example, see Figure 1, the light-emitting unit 20 is linear, and the specific arrangement of the light-emitting unit 20 on the coil unit 10 is as follows: the light-emitting unit 20 is wound around the surface of the coil unit 10 along the annular path of the coil unit 10, and the light-emitting unit 20 is connected to the power supply circuit to meet the power supply demand of the light-emitting unit 20. Preferably, the light-emitting unit 20 is arranged on the coil unit 10 and extends along the annular path of the coil unit 10, so that the light-emitting unit 20 can be in the shape of a halo after emitting light, thereby improving the uniformity of light.

[0044] See also Figure 2 The coil units 10 of the plurality of coil modules 100 are arranged in rows and columns to form a coil array. Figure 3 is a schematic diagram of a coil array according to the first embodiment of the present utility model, Figure 4 is another schematic diagram of the coil array of the first embodiment of the utility model, see Figure 3 and Figure 4 The coil array can further form a birdcage coil, and the light-emitting unit 20 is arranged on the metal conductor corresponding to the edge portion of the coil array. In this way, the light-emitting unit 20 can be used to display the range of activation of the coil array, that is, the distribution range of the coil units 10 in the coil array, on the metal conductor of the edge region of each coil unit 10 in the coil array. For example, see Figure 5 A light emitting unit 20 is arranged on the metal conductor corresponding to each coil unit 10 of the end ring of the birdcage coil. When the light emitting unit 20 emits light, it indicates the activated coil unit 10 in the coil array. Figure 5 As shown, the solid line shows the activated coil unit, and the dotted line shows the inactivated coil unit.

[0045] Further, the coil module 100 also includes a tuning and detuning circuit, which is electrically connected to the coil unit 10 and is used to tune or detune the coil unit 10. It can be understood by those skilled in the art that when the tuning and detuning circuit tunes the coil unit 10, that is, adjusts the resonant frequency of the coil unit 10, the coil unit 10 can work; when the tuning and detuning circuit detunes the coil unit 10, the coil unit 10 stops working. Further, the coil module 100 includes a substrate 30 (such as a PCB board), the substrate 30 is connected to the coil unit 10, and the power supply circuit and the resonant circuit are integrated on the substrate 30.

[0046] Further, the plurality of coil modules 100 are disposed on a flexible carrier, and the flexible carrier may be fabric or fur.

[0047] It should be noted that the magnetic resonance coil of this embodiment can be used as a receiving coil for receiving magnetic resonance signals, as a transmitting coil for transmitting radio frequency signals, or as an integrated transmitting and receiving coil with both signal transmitting and receiving functions. The coil unit 10 is adjusted accordingly to serve as a transmitting channel or a receiving channel for the signal.

[0048] [Example 2]

[0049] For this example, please refer to Figure 6 and Figure 7 To understand, Figure 6 is a schematic diagram of a coil module of a magnetic resonance coil according to a second embodiment of the present utility model, Figure 7 Schematic diagram of a magnetic resonance coil according to Embodiment 2 of the present invention. This embodiment only describes the differences from Embodiment 1, and for the same or similar parts, please refer to the description of Embodiment 1.

[0050] In this embodiment, the light-emitting unit 20 and the coil unit 10 are integrally constructed, that is, the two are integrally formed. Specifically, the coil unit 10 is made of special materials, and the coil unit 10 can realize both the work of magnetic resonance imaging and the work of luminescence. Then, when the coil unit 10 is powered on, the coil unit 10 will emit light at the same time, so as to show the entire outline of the coil unit 10. The light-emitting unit 20 and the coil unit 10 are integrally constructed, which can save design costs. In one embodiment, the material of the coil unit 10 includes a light-emitting fiber. It can be understood by those skilled in the art that the light-emitting polymer active material is coated on the surface of the fiber electrode, that is, the polymer composite fiber loaded with the light-emitting active material. After applying an alternating voltage, the polymer composite light-emitting active layer located on the light-emitting fiber is excited by the electric field in the overlap area, and light-emitting "pixel points" are formed. The coil unit 10 of this embodiment is configured based on this principle of the light-emitting fiber. In this way, the light-emitting fiber can realize both the light-emitting demand and the magnetic resonance imaging demand. Structurally, the luminous fiber includes a conductor (which can be understood as a fiber electrode, and the conductor here also serves as a metal conductor of the coil unit 10) and a luminous layer (which can be understood as a luminous polymer active material), the power supply circuit is electrically connected to the conductor, and the conductor is electrically connected to the luminous layer, so that the power supply circuit is electrically connected to the luminous layer, so that the luminous layer emits light. In one embodiment, the conductor of the luminous fiber can be connected end to end to form a closed loop, so that the coil unit 10 has the function of being a toroidal coil.

[0051] See also Figure 7 The coil units 10 of the plurality of coil modules 100 are arranged in rows and columns to form a coil array, and the coil array can further form a birdcage coil (see Figure 3 ). In this way, the coil unit 10 and the light-emitting unit 20 are integrally formed. When the coil unit 10 is activated and working, the coil unit 10 will also emit light to show the overall outline of the coil unit 10, thereby showing the distribution range of the coil unit 10 in the coil array, that is, the distribution range of the activated coil unit 10.

[0052] It should be noted that the magnetic resonance coil of this embodiment can be used as a receiving coil for receiving magnetic resonance signals, as a transmitting coil for transmitting radio frequency signals, or as an integrated transmitting and receiving coil with both signal transmitting and receiving functions. The coil unit 10 is adjusted accordingly to serve as a transmitting channel or a receiving channel for the signal.

[0053] [Example 3]

[0054] The present embodiment provides a magnetic resonance coil, including a carrier and a coil unit 10, wherein the coil unit includes a metal conductor. The material of the carrier is a hard material or a flexible material, that is, the carrier is a hard carrier or a flexible carrier (fabric, fur, etc.), and the hard material may be, for example, a polycarbonate material, and the flexible material may be an EVA (ethylene-vinyl acetate copolymer) material. The coil unit 10 is carried on the carrier, and a light-emitting layer is provided on the metal conductor of the coil unit 10, or a light-emitting fiber is provided on the metal conductor of the coil, and the light-emitting layer or the light-emitting fiber can emit light, thereby showing at least a partial outline of the magnetic resonance coil or at least a partial outline of the coil unit 20. Furthermore, a light-emitting fiber is provided on the carrier, and the light-emitting fiber can emit light in response to a user touch.

[0055] The magnetic resonance coil of this embodiment is different from both the first and second embodiments. The luminous fiber of the magnetic resonance coil of this embodiment does not need to be provided with a power supply circuit to supply power to make the luminous fiber emit light, but uses the electromagnetic energy in the magnetic resonance environment to drive the luminous fiber to emit light. Specifically, the luminous fiber of the magnetic resonance coil of this embodiment has a three-layer sheath-core structure, the inner layer is a fiber antenna (silver-plated nylon fiber) that induces an alternating electromagnetic field, the middle layer is a dielectric layer (BaTiO3 composite resin) that improves the electromagnetic energy coupling capacity, and the outer layer is an electric field-sensitive luminous layer (ZnS composite resin). Based on the energy interaction mechanism of "human body coupling", the electromagnetic energy in the magnetic resonance environment is used as a wireless driving force, and then the energy is transferred to the luminous fiber through the conductor of the "patient", which promotes the energy interaction of "patient coupling". When the user gently touches the luminous fiber, the luminous fiber will emit light. The luminous fiber of the magnetic resonance coil of this embodiment can realize luminous display without relying on chips and power supply circuits.

[0056] Although the utility model is disclosed as above with preferred embodiments, the above embodiments are not intended to limit the utility model. For any technician familiar with the art, without departing from the scope of the technical solution of the utility model, the above disclosed technical content can be used to make many possible changes and modifications to the technical solution of the utility model, or modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A magnetic resonance coil, characterized in that: The invention comprises a coil module (100), wherein one or more of the coil modules (100) comprises a coil unit (10), a light-emitting unit (20) and a power supply circuit; the coil unit comprises a metal conductor, and the light-emitting unit (20) is arranged on the metal conductor; the power supply circuit is electrically connected to the light-emitting unit (20) and is used to make the light-emitting unit (20) emit light.

2. The magnetic resonance coil according to claim 1, characterized in that The material of the light-emitting unit (20) includes light-emitting fibers, and the light emitted by the light-emitting unit (20) can show at least a partial outline of the magnetic resonance coil or at least a partial outline of the coil unit (10).

3. The magnetic resonance coil according to claim 2, characterized in that: The light-emitting unit (20) comprises a conductor and a light-emitting layer, the light-emitting layer is electrically connected to the conductor, and the conductor is connected to the power supply circuit.

4. The magnetic resonance coil according to any one of claims 1 to 3, characterized in that: The coil unit (10) formed by the metal conductor is a ring coil, a rectangular coil, a butterfly coil, a saddle coil or a birdcage coil; the light-emitting unit (20) is wound around the surface of the coil unit (10) along an extension path of the coil unit (10).

5. The magnetic resonance coil according to claim 1, characterized in that: The coil module (100) further comprises a tuning and detuning circuit and a substrate (30); the tuning and detuning circuit is electrically connected to the coil unit (10) and is used to tune or detune the coil unit (10); the substrate (30) is connected to the coil unit (10), and the power supply circuit and the tuning and detuning circuit are both integrated on the substrate (30).

6. The magnetic resonance coil according to claim 1, characterized in that: The coil units (10) of the plurality of coil modules (100) are arranged in rows and columns to form a coil array; the light-emitting unit (20) is arranged on a metal conductor corresponding to an edge portion of the coil array.

7. The magnetic resonance coil according to claim 1 or 6, characterized in that: A plurality of coil modules (100) are arranged on a flexible carrier, and the flexible carrier is fabric or fur.

8. A magnetic resonance coil, characterized in that: include: A carrier, made of a hard material or a flexible material; A coil unit (10) is carried on the carrier, the coil unit (10) comprises a metal conductor, a luminous layer is arranged on the metal conductor, or a luminous fiber is arranged on the metal conductor; The light-emitting layer or the light-emitting fiber can emit light to show at least a partial outline of the magnetic resonance coil or at least a partial outline of the coil unit (10).

9. The magnetic resonance coil according to claim 8, characterized in that: The carrier is provided with a light-emitting fiber, and the light-emitting fiber can emit light in response to a user's touch.

10. The magnetic resonance coil according to claim 8, characterized in that The hard material is a polycarbonate material, and the flexible material is an EVA material or fabric.

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