CN214473884U

CN214473884U - Receiving coil and coil receiving assembly

Info

Publication number: CN214473884U
Application number: CN202023322399.5U
Authority: CN
Inventors: 张鸣
Original assignee: Wuhan United Imaging Life Science Instrument Co Ltd
Current assignee: Wuhan United Imaging Life Science Instrument Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-22
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a receiving coil and coil receiving assembly. The receiving coil includes: a connection conductor surrounding the detection unit in a set direction; and the telescopic part is arranged on the connecting conductor and is used for enabling the detection unit to be telescopic so as to increase or reduce the sectional area of the receiving coil. The receiving coil is driven to stretch by the telescopic part, so that the sectional area of the coil receiving assembly can be increased or reduced, the coil receiving assembly can adapt to the parts of patients with different body types to be imaged, the imaging result of the parts to be imaged is accurate, and the diagnosis of medical staff is facilitated.

Description

Receiving coil and coil receiving assembly

Technical Field

The utility model relates to an imaging device technical field especially relates to a receiving coil and coil receiving assembly.

Background

When the magnetic resonance equipment is used for scanning knees or abdomen, in order to achieve a better scanning effect, a flexible coil is often used for wrapping an imaging part of a patient so as to achieve a better signal-to-noise imaging effect and ensure the imaging quality of the imaging part.

However, since the clinical scene is very complicated and the patients have different postures, when the coil is fixed in size, the coil cannot cover the imaging area when imaging a fat patient, and for a thin patient, the coil affects the sampling sensitivity because the filling degree is not enough. This can affect the imaging quality of the imaged region and is not conducive to medical personnel diagnosis.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a receiving coil and a coil receiving assembly for solving the problem that the size of the coil is fixed and the imaging of the portion to be imaged cannot be accurately performed.

A receive coil, comprising:

a connection conductor surrounding the detection unit in a set direction;

and the telescopic part is arranged on the connecting conductor and is used for enabling the detection unit to be telescopic so as to increase or reduce the sectional area of the receiving coil.

In one embodiment, the telescopic part comprises a rotating part and a telescopic part arranged on the rotating part, the rotating part is used for winding the connecting conductor, and the telescopic part can provide rotating power for the rotating part so as to wind or release the connecting conductor.

In one embodiment, the telescoping member is a coil spring disposed within the rotating member.

In one embodiment, the telescopic member includes a telescopic rod, and the telescopic rod is disposed on the connecting conductor and drives the connecting conductor to extend or retract.

In one embodiment, the telescopic member includes a spring, and the spring is disposed on the connecting conductor and drives the connecting conductor to extend or retract.

In one embodiment, the telescopic member is an elastic wire made of an elastic material, and two ends of the elastic wire are respectively connected with the connecting conductor.

In one embodiment, the receiving coil further includes an adjustable capacitor, and the adjustable capacitor is disposed on the connecting conductor and is used for adjusting the capacitance of the connecting conductor after expansion and contraction.

A coil receiving assembly comprising a plurality of receiving coils, at least one of the plurality of receiving coils comprising:

a flexible support;

the connecting conductor comprises an upper connecting section, a middle connecting section and a lower connecting section, the upper connecting section and/or the lower connecting section are/is arranged on the flexible supporting body in a bearing mode, and the upper connecting section, the middle connecting section and the lower connecting section form a detection unit together; and

and the telescopic component is arranged on the intermediate connecting section and can change the length of the intermediate connecting section.

In one embodiment, the upper connecting section and the lower connecting section respectively bear the different flexible supporting bodies, an elastic supporting body is arranged between the two flexible supporting bodies, and the telescopic component and the middle connecting section are simultaneously borne and arranged on the elastic supporting body.

In one embodiment, a plurality of receiving coils are distributed in rows and columns, and a decoupling capacitor is arranged between adjacent receiving coils belonging to the same row, and the decoupling capacitor is arranged on the elastic support body.

After the technical scheme is adopted, the utility model discloses following technological effect has at least:

the utility model discloses a receiving coil, connecting conductor enclose through the flexible coil and establish into the detecting element who receives the position magnetic resonance signal of waiting to form images. When the imaging device is used, the part to be imaged can extend into a closed structure surrounded by the connecting conductor and is matched with an imaging body of the magnetic resonance equipment for imaging. When the size of the part to be imaged is larger, the telescopic component can be extended to increase the sectional area of the receiving coil, so that the receiving coil covers the part to be imaged. When the size of the part to be imaged is small, the telescopic component can retract so as to reduce the sectional area of the receiving coil and ensure that the receiving coil can be attached to the part to be imaged. The detection unit that drives connecting conductor through flexible part and form is flexible, can increase or reduce receiving coil's sectional area, and effectual solution is fixed and the unable accurate problem of treating the formation of image position formation of image of coil size at present for receiving coil can adapt to the position of treating the formation of image of different size patients, guarantees to treat that the formation of image position's formation of image result is accurate, the medical personnel's of being convenient for diagnosis.

Drawings

Fig. 1 is a schematic diagram of a receiving coil according to an embodiment of the present invention;

FIG. 2 is a schematic view of the telescoping member of the receiver coil of FIG. 1 from a side view;

FIG. 3 is a schematic view of the telescoping member of the receiver coil shown in FIG. 1 from the other side;

fig. 4 is an equivalent circuit diagram of a receiving coil according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a coil receiving assembly according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a coil receiving assembly according to another embodiment of the present invention.

Wherein: 100. a receiving coil; 110. a connecting conductor; 120. a telescopic member; 121. a rotating member; 122. a telescoping member; 130. an adjustable capacitance; 140. a flexible support; 150. an elastic support; 160. a cross-over capacitor; 170. and a decoupling capacitor.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are 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 invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "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 convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3, the present invention provides a receiving coil 100. The receiving coil 100 is used in a coil receiving assembly of a magnetic resonance apparatus. In actual use, the coil receiving assembly formed by the receiving coil 100 is disposed outside the portion to be imaged of the patient and cooperates with the imaging body of the magnetic resonance apparatus to perform imaging. The receiving coil 100 can be used as a coil for receiving a magnetic resonance signal and can be well attached to the body surface of a part to be imaged, so that an imaging effect with good signal-to-noise ratio can be achieved, and the imaging quality of the part to be imaged is ensured.

However, the clinical scenes are very complicated at present, the patients have different postures, after the coil used by the magnetic resonance device is fixed in size, when a fat patient is imaged, the coil cannot cover the imaging area, and for a thin patient, the coil has insufficient filling degree, so that the sampling sensitivity is influenced. This can affect the imaging quality of the imaged region and is not conducive to medical personnel diagnosis.

Therefore, the utility model provides a novel receiving coil 100, this receiving coil 100 can the sectional area of automatically regulated self to adapt to different size patients 'the position of waiting to form images, make receiving coil 100 can with wait to form images the position laminating, guarantee to wait to form images the imaging quality at position, the medical personnel's of being convenient for diagnosis. The specific structure of the receiving coil 100 is described in detail below.

Referring to fig. 1 to 3, in an embodiment, the receiving coil 100 includes a connecting conductor 110 and a telescopic member 120. The connection conductor 110 surrounds the detection unit in a set direction. The telescopic member 120 is disposed on the connection conductor 110, and the telescopic member 120 is used to make the detection unit telescopic so as to increase or decrease the cross-sectional area of the receiving coil 100 or the surrounding area of the receiving coil 100.

The connecting conductor 110 is a main structure of the receiving coil 100, a part to be imaged is located in a main magnetic field formed by an imaging machine of the magnetic resonance apparatus to generate nuclear spin, and the receiving coil 100 receives a magnetic resonance signal generated by the nuclear spin of the imaging machine. The connection conductor 110 is arranged around and encloses a detection unit capable of receiving magnetic resonance signals generated at the region to be imaged. In practical use, the connecting conductor 110 may be sleeved on the portion to be imaged or tightly attached to the surface of the portion to be imaged. Alternatively, the cross-sectional shape of the accommodating space surrounded by the connecting conductor 110 is closed, and the cross-sectional shape surrounded by the connecting conductor 110 may be any shape such as a ring shape, a rectangle, a butterfly shape, a saddle shape, a trapezoid shape, and the like.

The expansion member 120 is provided on the connection conductor 110. The telescopic member 120 has a telescopic function and can drive the detection unit formed by the connection conductor 110 to be synchronously telescopic. Specifically, when the telescopic member 120 is extended, the telescopic member 120 can extend the detection unit, increase the length of the connection conductor 110, and further increase the sectional area of the accommodating space surrounded by the connection conductor 110, that is, increase the sectional area of the receiving coil 100. When the telescopic member 120 is retracted, the telescopic member 120 can retract the detection unit, and reduce the length of the connection conductor 110, thereby reducing the sectional area of the accommodating space surrounded by the connection conductor 110, that is, reducing the sectional area of the receiving coil 100.

When the receiving coil 100 forms a coil receiving assembly, if the size of the portion to be imaged of the patient is large, the telescopic member 120 is adjusted by external force, so that the telescopic member 120 can be extended to increase the sectional area of the receiving coil 100. Therefore, the receiving coil 100 can be ensured to accurately cover the part to be imaged, the full-area coverage of the part to be imaged is realized, and the receiving coil 100 can be matched with an imaging machine body to accurately perform imaging. If the size of the portion to be imaged of the patient is small, the telescopic member 120 is retracted to reduce the sectional area of the receiving coil 100. Therefore, the receiving coil 100 can be attached to the part to be imaged, and the sampling sensitivity of the receiving coil 100 is ensured.

Receiving coil 100 of the above-mentioned embodiment, it is flexible to drive the detecting element that connecting conductor 110 formed through flexible part 120, can increase or reduce receiving coil 100's sectional area, and effectual solution is fixed and the unable accurate problem of treating the formation of image position formation of image of coil size at present for receiving coil 100 can adapt to the position of treating the formation of image of different size patients, guarantees to treat that the formation of image position's formation of image result is accurate, the medical personnel's of being convenient for diagnosis.

Alternatively, the connection conductor 110 is made of copper sheet. Of course, in other embodiments of the present invention, the connecting conductor 110 may also be made of other coaxial wires capable of realizing electric conduction and having a radio frequency receiving function.

Referring to fig. 1 to 3, in an embodiment, the telescopic member 120 includes a rotating member 121 and a telescopic member 122 disposed on the rotating member 121, the rotating member 121 is used for winding the connection conductor 110, and the telescopic member 122 is capable of providing a rotating power to the rotating member 121 so that the rotating member 121 releases or winds the connection conductor 110.

The rotation member 121 is rotatable. The connection conductor 110 is wound on the rotation member 121, and the connection conductor 110 is wound on the rotation member 121 a plurality of turns. That is, the connection conductor 110 is divided into an external portion and a portion wound around the rotation member 121. The connection conductor 110 of the outside portion encloses an accommodation space that accommodates a portion to be imaged. If the length of the connection conductor 110 of the external portion is increased, the sectional area of the reception coil 100 is increased, and if the length of the connection conductor 110 of the external portion is decreased, the sectional area of the reception coil 100 is decreased.

And the length of the connection conductor 110 of the external portion is controlled by the rotation of the rotation member 121. When the rotation member 121 rotates, the connection conductor 110 of the rotation member 121 may be released or the connection conductor 110 may be wound around the rotation member 121. When the rotation member 121 releases the connection conductor 110, the connection conductor 110 of the external portion increases; when the rotation member 121 winds the connection conductor 110, the connection conductor 110 of the external portion is shortened in length.

Specifically, when the rotating member 121 rotates in one direction, the rotating member 121 can release the connecting conductor 110, so that the length of the external connecting conductor 110 is increased, and further, the sectional area of the accommodating space surrounded by the connecting conductor 110 is increased, so that the sectional area of the receiving coil 100 is increased. When the rotation member 121 rotates in the other direction, the rotation member 121 can wind the connection conductor 110, so that the length of the connection conductor 110 outside is shortened, and the sectional area of the accommodating space surrounded by the connection conductor 110 is reduced, so that the sectional area of the receiving coil 100 is reduced.

The rotation of the rotation member 121 is achieved by the telescopic member 122. The telescopic member 122 can power the rotation of the rotation member 121. When the telescopic member 122 is extended, the extended member can drive the rotating member 121 to rotate around a direction, so that the rotating member 121 releases the connecting conductor 110 to increase the sectional area of the receiving coil 100. When the protruding member retracts, the protruding member can drive the rotating member 121 to rotate around another direction, so that the rotating member 121 winds around the connecting conductor 110, thereby reducing the size of the sensing area surrounded by the receiving coil 100.

Optionally, the rotating member 121 is a reel. Of course, in other embodiments of the present invention, the rotating member 121 may also be a rotatable member such as a rotating shaft that can realize winding and releasing of the connecting conductor 110.

Referring to fig. 1 to 3, in one embodiment, the telescopic member 122 is a coil spring, and the coil spring is disposed in the rotating member 121. The end of the coil spring is connected to the rotating member 121. The rotation member 121 can be rotated by the elastic force of the coil spring. When an external force is applied to the coil spring, the external force can expand the coil spring against the elastic force of the coil spring, thereby increasing the length of the connection conductor 110. When the external force disappears, the elastic force of the coil spring can make the coil spring follow to reduce the length of the connection conductor 110. Alternatively, the inner end of the coil spring is fixed to a support base of the coil receiving assembly.

When the receiving coil 100 of the embodiment is used, the medical staff adjusts the length of the connecting conductor 110 according to the size of the part to be imaged, so as to achieve the purpose of adjusting the sectional area of the receiving coil 100, and adapt to the parts to be imaged with different sizes. Specifically, the method comprises the following steps. When the size of the portion to be imaged is large, the medical staff may drag the connection conductor 110, so that the drag force of the connection conductor 110 acts on the coil spring to overcome the elastic force of the coil spring to extend the coil spring. At this time, the connecting conductor 110 can completely cover the portion to be imaged. When the size of the portion to be imaged is small, the external force acting on the connecting conductor 110 is cancelled, and the elastic force of the torsion spring makes the torsion spring retract, so that the connecting conductor 110 is driven to retract, and the connecting conductor 110 is attached to the portion to be imaged.

In an embodiment, the retractable member 120 includes a retractable rod disposed on the connecting conductor 110 and driving the connecting conductor 110 to extend or retract. The telescopic rod is of a telescopic structure. When the telescopic rod is extended or retracted, the connecting conductor 110 can be driven to move synchronously, so that the connecting conductor 110 is extended or retracted to increase or decrease the length of the connecting conductor 110.

Alternatively, both ends of the telescopic rod are connected with the connection conductors 110, respectively. The position of the telescopic rod on which the connecting conductor 110 is arranged is disconnected, one end of the disconnected connecting conductor 110 is connected with one end of the telescopic rod, and the other end of the disconnected connecting conductor 110 is connected with the other end of the telescopic rod. When external force acts on the telescopic rod or the connecting conductor 110, the connecting rod can drive the connecting conductor 110 to stretch.

Of course, in other embodiments of the present invention, the telescopic rod may be attached to the connecting conductor 110. The two ends of the telescopic rod are fixedly connected with the connecting conductor 110. When the telescopic rod is in the retracted state, the connection conductor 110 is in an untensioned state. When the telescopic rod is extended, the telescopic rod can drive the connecting conductor 110 to gradually drive the connecting conductor 110 to extend so as to increase the length of the connecting conductor 110. When the telescopic rod retracts, the telescopic rod can drive the connecting conductor 110 to retract gradually, so that the length of the connecting conductor 110 is reduced.

In one embodiment, the retractable member 120 includes a spring disposed on the connecting conductor 110 and driving the connecting conductor 110 to extend or retract. The spring can drive the connecting conductor 110 to move synchronously when the spring expands and contracts, so that the connecting conductor 110 can extend or retract to increase or decrease the length of the connecting conductor 110.

Alternatively, both ends of the spring are connected to the connection conductors 110, respectively. The position of the connecting conductor 110 where the spring is provided is a disconnected position, one end of the disconnected connecting conductor 110 is connected to one end of the spring, and the other end of the disconnected connecting conductor 110 is connected to the other end of the spring. When external force acts on the spring or the connecting conductor 110, the connecting rod can drive the connecting conductor 110 to extend out, and when the external force disappears, the elastic force of the spring can drive the connecting conductor 110 to retract.

Of course, in other embodiments of the present invention, the spring may also be attached to the connection conductor 110. Both ends of the spring are fixedly connected to the connection conductor 110. When the spring is in the retracted state, the connection conductor 110 is in an untensioned state. When the spring is extended, the spring can drive the connecting conductor 110 to gradually drive the connecting conductor 110 to extend so as to increase the length of the connecting conductor 110. When the spring is retracted, the spring can bring the connection conductor 110 to gradually retract to reduce the length of the connection conductor 110.

In one embodiment, the telescopic member 120 is an elastic wire made of an elastic material, and both ends of the elastic wire are respectively connected to the connecting conductors 110. The elastic lead is of a structure similar to a rubber band. The position of the elastic lead where the telescopic member 120 is disposed is a disconnected position, one end of the disconnected connecting conductor 110 is connected to one end of the elastic lead, and the other end of the disconnected connecting conductor 110 is connected to the other end of the elastic lead. When an external force acts on the spring or the connection conductor 110, the connection conductor 110 and the elastic wire can be pulled, so that the sectional area of the receiving coil 100 is increased. When the external force disappears, the elastic wire can be retracted to pull the connection conductor 110, so that the sectional area of the receiving coil 100 is reduced.

Referring to fig. 1 to 3, in an embodiment, the number of the telescopic members 120 is multiple, and the plurality of telescopic members 120 are disposed at intervals on the connecting conductor 110. The plurality of telescopic members 120 can ensure that the cross-sectional area of the receiving coil 100 can be adapted to different sizes of the parts to be imaged. Moreover, the plurality of telescopic members 120 also increases the degree of freedom of the receiver coil 100, so that the size of the receiver coil 100 has a plurality of variable degrees of freedom, facilitating adjustment of the cross-sectional size of the receiver coil 100.

Illustratively, the number of telescoping members 120 is two. Of course, in other embodiments of the present invention, the number of the telescopic members 120 may be more.

In an embodiment, the receiving coil 100 further includes an adjustable capacitor 130, and the adjustable capacitor 130 is disposed on the connecting conductor 110 and is used for adjusting the capacitance of the connecting conductor 110 after stretching.

It is understood that the change of the length of the connecting conductor 110 of the receiving coil 100 causes the inductance of the receiving coil 100 to change, and finally causes the resonant frequency of the receiving coil 100 to change. The coil itself is equivalent to an LC resonant circuit with resonant frequency

Where L denotes the equivalent inductance of the coil and C denotes the equivalent capacitance of the coil. A change in the inductance L results in a change in the resonant frequency f.

Therefore, by changing the capacitance of the tunable capacitor 130C, the resonant frequency f is restored to the value before the inductance L is changed, i.e., increasing the inductance L requires a corresponding decrease in the capacitance of the tunable capacitor 130C. In this way, after the receiving coil 100 adjusts the length of the connecting conductor 110 through the telescopic component 120, the capacitance of the telescopic connecting conductor 110 is adjusted through the adjustable capacitor 130, so as to achieve the purpose of adjusting the resonant frequency of the receiving coil 100, and the resonant frequency of the receiving coil 100 can be adapted to the size of the receiving coil 100.

Alternatively, the tunable capacitor 130 may be a voltage tunable capacitor 130 and a mechanical tunable capacitor 130. The voltage-tuned tunable motor senses voltage through the capacitor to be tuned, and the mechanical-tuned tunable capacitor 130 is tuned by the change of the mechanical structure. Wherein the voltage tuning needs to match a corresponding algorithm to be implemented in connection with the computer. It should be noted that the structure and the adjusting method of the adjustable capacitor 130 are the prior art, and are not described in detail herein. The utility model discloses a set up adjustable electric capacity 130 and realize the regulation of connecting conductor 110 electric capacity on connecting conductor 110.

In one embodiment, the tunable capacitor 130 is configured as a voltage tunable capacitor, and the inductance L of the receiver coil 100 changes when the cross-sectional area of the receiver coil 100 is changed by adjusting the telescopic member 120. For example, the processor of the magnetic resonance system monitors the reflectance profile of the receive coil 100 in real time over a set range of main magnetic field frequencies (system frequencies). In this embodiment, the processor of the magnetic resonance system monitors the reflection coefficient curve of the receiver coil 100 at the system frequency ± 1MHz, and performs polynomial fitting on the reflection coefficient curve to determine the peak-valley (lowest point) position of the reflection coefficient curve, where the frequency corresponding to the peak-valley position is the current resonance frequency of the receiver coil 100. Let f1 represent the resonant frequency before the size (i.e. the sectional area) of the receiver coil 100 is changed, C1 is the equivalent capacitance before the size of the receiver coil 100 is changed, L1 is the equivalent inductance before the size of the receiver coil 100 is changed, and L2 is the equivalent inductance after the size of the receiver coil 100 is changed, if it is required that the receiver coil 100 is operated at the target frequency f0 after the size is changed, it should be satisfied:

C2＝(C1*L1/L2)*(f1/f0)^²

in this embodiment, the values of L1/L2 are considered to vary from 0.85 to 1.15 depending on the coil design, and thus the value of C2 has a well-defined constraint. By adjusting the adjustable capacitance 130, the equivalent capacitance of the receiving coil 100 can be changed, so that the resonant frequency of the receiving coil 100 is at f 0. The above process is applicable to any coil size change, so that when the coil size changes, the voltage tuning adjustable capacitor on the coil is adjusted, the resonance frequency of the coil is changed, the system frequency is adaptively tracked, and a laboratory technician is not required to set the voltage of the voltage tuning adjustable capacitor on a computer.

Fig. 4 is an equivalent circuit diagram of a receiving coil 100 according to an embodiment of the present invention. The tunable capacitor 130 is disposed in the connecting conductor 110, and the connecting conductor 110 is connected to a preamplifier AP for amplifying the magnetic resonance signal received by the receiving coil 100. Meanwhile, a matching circuit APD is integrated in the preamplifier AP, and the matching APD circuit can realize impedance matching with the receiving coil 100. By adjusting the impedance of the matching circuit APD in the preamplifier AP, the coupling induced current inside the receiving coil 100 can be suppressed, thereby achieving the effect of reducing the coupling.

When the receiving coil 100 is used, if the size of the portion to be imaged is large, the medical staff may drag the connecting conductor 110, so that the dragging force of the connecting conductor 110 acts on the telescopic member 122, and the elastic force of the telescopic member 120 is overcome to enable the telescopic member 122 to drive the rotating member 121 to rotate, so that the rotating member 121 releases the connecting conductor 110. At this time, the accommodating space formed by the connecting conductor 110 can completely cover the portion to be imaged. If the size of the portion to be imaged is small, the external force acting on the connecting conductor 110 is cancelled, and the elastic force of the telescopic member 122 retracts the telescopic member 122, so as to drive the rotating member 121 to rotate to wind the connecting conductor 110. At this time, the connection conductor 110 can be attached to the tape imaging portion.

The rotation member 121 is driven to rotate by extending and retracting the telescopic member 122, so that the rotation member 121 winds or releases the connection conductor 110, and the extending length of the connection conductor 110 is increased or decreased, thereby achieving the purpose of adjusting the sectional area of the receiving coil 100. Thus, the receiving coil 100 can adapt to the imaging parts of patients with different body types, ensure the accurate imaging result of the part to be imaged and facilitate the diagnosis of medical staff.

The utility model also provides a coil receiving assembly, including a plurality of receiving coil 100. The receiving coil 100 includes a connecting conductor 110 and a telescopic member 120. The connection conductor 110 surrounds the detection unit in a set direction. The telescopic member 120 is provided to the connection conductor 110, and the telescopic member 120 is used to make the detection unit telescopic to increase or decrease the sectional area of the receiving coil 100.

The utility model discloses a coil receiving assembly adopts a plurality of receiving coil 100 of above-mentioned embodiment to form, and a plurality of receiving coil 100's detecting element can form holistic accommodation space to enclose and locate the week side of waiting to form images the position, guarantee to wait to form images the position and lie in coil receiving assembly's inside, like this, can reach the better imaging effect of signal to noise ratio after coil receiving assembly cooperates the image organism, guarantee that the imaging result is accurate.

After the coil receiving assembly adopts the receiving coil 100 of the embodiment, the sectional area of the accommodating space can be adjusted to adapt to the imaging positions of patients with different body types, so that the imaging result of the to-be-imaged position is accurate, and the diagnosis of medical staff is facilitated.

Alternatively, the plurality of receiving coils 100 of the coil receiving assembly may be arranged in a multi-channel manner, or may be arranged in an array manner. Of course, in other embodiments of the present invention, the plurality of receiving coils 100 of the coil receiving assembly are arranged in an array.

Optionally, the coil receiving assembly further comprises a support frame on which the plurality of receiving coils 100 are arranged at intervals in the axial direction. The support frame acts as a support so that the plurality of receiver coils 100 form a unitary structure for ease of use of the coil receiver assembly.

Fig. 5 is a schematic diagram of a coil receiving assembly composed of a plurality of receiving coils 100 according to an embodiment of the present invention. The coil receiving assembly comprises a plurality of receiving coils 100 arranged in rows and columns and a carrier for supporting the receiving coils 100, wherein the connecting conductors 110 of the receiving coils 100 are encircled to form coil units/detection units, and the plurality of coil units are distributed in rows and columns to form a matrix form; the connection conductor 110 is provided with a telescopic member 120; the carrier supporting the receiving coil 100 includes a flexible support 140 and an elastic support 150. For each coil unit, along the length direction of the receiving coil 100, the connection conductor 110 includes an upper connection section, a middle connection section, and a lower connection section, wherein: the upper connection section and the lower connection section are separately arranged on the two flexible supporting bodies 140, an elastic supporting body 150 is arranged between the two flexible supporting bodies 140, and the middle connection section connected with the telescopic component 120 in a communication manner is arranged on the elastic supporting body 150. The elastic support 150 can be stretched along the longitudinal direction of the receiving coil 100 by an external force, and at the same time, the telescopic member 120 is extended, so that the length of the intermediate connection section of the connection conductor 110 is increased; after the external force is removed, the elastic support 150 is restored along the longitudinal direction of the receiving coil 100, and at the same time, the telescopic member 120 is retracted to shorten the length of the connecting conductor 110.

In this embodiment, the coil receiving assembly includes a 4 × 4 array, the flexible supports 140 are spaced apart from the elastic supports 150 along the length direction of the receiving coils 100, the adjacent receiving coils 100 belonging to the same row have an overlap for overlapping decoupling, and the adjacent receiving coils 100 belonging to the same column have a crossover capacitor 160 therebetween for capacitive decoupling. Further, the crossover capacitor 160 is disposed on the flexible support 140.

Fig. 6 is a schematic diagram of a coil receiving assembly composed of a plurality of receiving coils 100 according to another embodiment of the present invention. The coil receiving assembly includes a 4 x 4 array of flexible supports 140 spaced from resilient supports 150 along the length of the receiving coil 100. Capacitive decoupling is adopted between adjacent receiving coils 100 belonging to the same row, and capacitive decoupling is also adopted between adjacent receiving coils 100 belonging to the same column. Specifically, the lower connection segment of the receiving coil 100 in the first row and the upper connection segment of the receiving coil 100 in the second row are simultaneously disposed on the flexible support 140, and a cross-over capacitor 160 is connected therebetween, so as to achieve decoupling of adjacent coil units in the column direction. The intermediate connection sections of the receiving coils 100 belonging to the same row are disposed on the elastic support 150, and the decoupling capacitors 170 are connected between the adjacent receiving coils 100 belonging to the same row, so as to achieve decoupling of the adjacent coil units in the row direction.

The utility model also provides a magnetic resonance equipment, including the formation of image organism, scanning bed and the coil receiving component that have the magnet hole, the scanning bed drives and waits to form images the position and the coil receiving component moves to the magnet hole in. Wherein a plurality of receiving coils 100 are included. The receiving coil 100 includes a connecting conductor 110 and a telescopic member 120. The connection conductor 110 surrounds the detection unit in a set direction. The expansion member 120 is provided on the connection conductor 110, and the expansion member 120 is used to expand and contract the connection conductor 110 so as to increase or decrease the sectional area of the receiving coil 100.

The utility model discloses a magnetic resonance equipment adopts behind the coil receiving assembly that has receiving coil 100, can adjust receiving coil 100's sectional area, and then adjusts coil receiving assembly's accommodation space's sectional area to adapt to different size patients ' the position of waiting to form images, guarantee to wait that the formation of image result at position is accurate, the medical personnel's diagnosis of being convenient for.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A receive coil, comprising:

a connection conductor surrounding the detection unit in a set direction;

2. The receiving coil according to claim 1, wherein the telescopic member includes a rotating member for winding the connecting conductor and a telescopic member provided to the rotating member, and the telescopic member can provide a rotational power to the rotating member to wind or release the connecting conductor.

3. The receive coil of claim 2, wherein the telescoping member is a coil spring disposed within the rotating member.

4. The receiving coil of claim 1, wherein the telescopic member comprises a telescopic rod, and the telescopic rod is disposed on the connecting conductor and drives the connecting conductor to extend or retract.

5. The receiving coil of claim 1, wherein the retractable member comprises a spring, and the spring is disposed on the connecting conductor and drives the connecting conductor to extend or retract.

6. The receiving coil as claimed in claim 1, wherein the flexible member is an elastic wire made of an elastic material, and both ends of the elastic wire are respectively connected to the connecting conductors.

7. The receiving coil according to any one of claims 1 to 5, wherein the receiving coil further comprises an adjustable capacitor, and the adjustable capacitor is disposed on the connecting conductor and is used for adjusting the capacitance of the connecting conductor after expansion and contraction.

8. A coil receiving assembly comprising a plurality of receiving coils, wherein at least one of the plurality of receiving coils comprises:

a flexible support;

9. The coil receiving assembly according to claim 8, wherein the upper connection section and the lower connection section respectively carry the different flexible supports, an elastic support is disposed between the two flexible supports, and the telescopic member and the middle connection section are simultaneously carried by the elastic support.

10. The coil receiving assembly according to claim 9, wherein a plurality of receiving coils are arranged in rows and columns, and a decoupling capacitor is disposed between adjacent receiving coils belonging to the same row, the decoupling capacitor being disposed on the elastic support.