CN217506099U

CN217506099U - Tuning and matching device and magnetic resonance imaging equipment

Info

Publication number: CN217506099U
Application number: CN202123118738.2U
Authority: CN
Inventors: 徐长斌; 陈文松; 李胜
Original assignee: Wuhan United Imaging Life Science Instrument Co Ltd
Current assignee: Wuhan United Imaging Life Science Instrument Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2022-09-27
Anticipated expiration: 2030-12-07
Also published as: CN215227607U

Abstract

The application relates to a tuning and matching device and a magnetic resonance imaging device. The tuning and matching control device comprises a tuning screw connected with a transmitting coil in the magnetic resonance imaging equipment and used for tuning and matching the transmitting coil. The display interaction means comprises at least one display panel arranged on the housing for displaying tuning and matching data. The application provides a tuning and matching device, when adjusting tuning screw rod in order to tune and match transmitting coil, tuning screw rod and at least one display panel are located the same one side of frame, realize the limit and look aside and transfer for tuning and matching are more accurate, and efficiency is higher.

Description

Tuning and matching device and magnetic resonance imaging equipment

Description of the drawings: the application is a divisional application which is provided by a parent application with the original application number of 2020229069171, the application date of 2020-12-07 and the name of the invention of tuning and matching device and magnetic resonance imaging equipment.

Technical Field

The present application relates to the field of magnetic resonance imaging technology, and in particular, to a tuning and matching apparatus and a magnetic resonance imaging device.

Background

The 9.4T ultrahigh field large caliber animal magnetic resonance imaging instrument is used as part of the national large scientific engineering, and the successful operation of the instrument inevitably brings a new development opportunity for the Chinese high field magnetic resonance imaging. The device is the first most advanced 9.4T magnetic resonance imager in Asia-Pacific region, the first integrated magnetic resonance imaging-animal experiment research platform in China, and the caliber of the magnet reaches 300 mm. The most prominent characteristic of the ultra-high field magnetic resonance imaging system is that it can bring higher signal-to-noise ratio, so under the continuous driving of higher signal-to-noise ratio, ultra-high field magnetic resonance imaging becomes a new development trend in recent years.

Ultra-high field magnetic resonance imaging devices require tuning and matching of the radio frequency transmit coil during use. Referring to fig. 1, in the conventional solution, an ultra-high field magnetic resonance imaging apparatus includes an operation room, a scan room and a cabinet room. The display is placed in the operation room, the display host is placed in the cabinet, the tuning and matching knob is arranged on the volume coil, and the volume coil is located at the rack of the scanning room during tuning and matching. When tuning and matching are carried out, the control console 201 of the operating room is triggered to start tuning and matching, then the control console returns to the scanning room to adjust the tuning and matching knobs to carry out tuning and matching, after the tuning and matching are completed, the control console also needs to return to the operating room to watch the tuning and matching results on the display, the tuning and matching state cannot be known in the scanning room, and if the first tuning and matching does not meet the requirements, the control console also needs to be confirmed between the scanning room and the working room back and forth, so that the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

Based on this, aiming at the problem that the tuning and matching process of the traditional magnetic resonance imaging device is too complicated, the application provides a tuning and matching device and a magnetic resonance imaging device.

The application provides a magnetic resonance imaging equipment's tuning and matching device, and magnetic resonance imaging equipment includes transmitting coil and frame, and the tuning and matching device includes:

the tuning and matching control device is connected with the transmitting coil and used for tuning and matching the transmitting coil, and the tuning and matching control device comprises a tuning screw rod;

a display interaction device comprising a display panel for displaying tuning and matching data;

the transmitting coil is arranged in the gradient coil in the stand, the tuning screw rod extends out of the stand, and the tuning screw rod and the at least one display panel are positioned on the same side of the stand.

In one embodiment, the display panel includes a plurality of functional regions, the plurality of functional regions including:

a display area for displaying the tuning and matching data; and

and an operation area for inputting start-up tuning and matching information and/or stop-tuning and matching information.

In one embodiment, the operation area further includes: and the channel switching area is used for switching the channels tuned and matched by the transmitting coil.

In one embodiment, each tuned channel corresponds to two tuning screws, and the two tuning screws respectively adjust the impedance matching and the resonant frequency of the transmitter coil channel.

In one embodiment, the plurality of functional areas further includes:

and the prompting area is used for prompting the currently rotating tuning screw and/or is used for prompting the tuning screw which is tuned or matched with the current transmitting coil and is required to be adjusted.

In one embodiment, a prompt icon is correspondingly arranged at the spatial arrangement position of each tuning screw in the prompt area; and each tuning screw is provided with a mark corresponding to the prompt icon.

In one embodiment, the prompt icon prompts, by highlighting and/or animation, the channel that should currently be tuned and matched.

In one embodiment, the tuning and matching control means further comprises:

and the input end of the tuning and matching circuit is connected with the tuning screw, and the output end of the tuning and matching circuit is electrically connected with the transmitting coil.

Based on the same inventive concept, the embodiment of the application provides a tuning and matching device of a magnetic resonance imaging device, the display interaction device comprises a data acquisition device, and after the data acquisition device acquires one or both of the bias voltage and the bias current of the tuning and matching control device, data conversion is carried out to obtain the reflection coefficient so as to display in a display panel.

Based on the same inventive concept, the embodiment of the application provides a magnetic resonance imaging device, which comprises the tuning and matching device of the magnetic resonance imaging device.

The tuning and matching device of the magnetic resonance imaging equipment comprises a display interaction device and a tuning and matching control device, and has at least the following beneficial effects:

and a tuning screw in the tuning and matching control device is connected with a transmitting coil in the magnetic resonance imaging equipment and is used for tuning and matching the transmitting coil. Each display panel in the display interaction device is used for displaying tuning and matching data, each display panel is also arranged on a rack of the magnetic resonance imaging equipment, and when the tuning screw rod is adjusted to tune and match the transmitting coil, the tuning screw rod and at least one display panel are positioned on the same side of the rack. When the magnetic resonance imaging device is tuned and matched, the tuning screw is used for tuning and matching, and then tuning and matching data are sent to a display panel of the display interaction device to be displayed. The tuning and matching data displayed on the display panel on the same side can be watched in real time in the tuning and matching processes, and the tuning and matching are realized while watching, so that the tuning and matching are more accurate and the efficiency is higher.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a magnetic resonance imaging apparatus provided in the present application;

fig. 2 is a schematic structural connection diagram of a tuning and matching apparatus of a magnetic resonance imaging apparatus according to an embodiment of the present application;

figure 3 is a schematic view of a display panel of a tuning and matching apparatus of a magnetic resonance imaging device mounted on a housing of a gantry according to an embodiment of the present application;

fig. 4 is a schematic structural connection diagram of a tuning and matching apparatus of a magnetic resonance imaging apparatus according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a tuning and matching device of a magnetic resonance imaging apparatus according to an embodiment of the present application;

fig. 6 is a display schematic diagram of a display panel according to an embodiment of the present application.

Fig. 7 is a schematic diagram illustrating a functional division of a display panel according to an embodiment of the present application.

Description of the main element reference numerals

11. A transmitting coil; 20. a display interaction device; 21. a control host; 22. a display panel; 23. a data acquisition device; 221. a display area; 222. an operation area; 223. a prompt area; 30. a tuning and matching control device; 31. a tuning screw; 32. a tuning and matching circuit; 100. a frame; 201. a console; 202. a console host.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application 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 application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first acquisition module may be referred to as a second acquisition module, and similarly, a second acquisition module may be referred to as a first acquisition module, without departing from the scope of the present application. The first acquisition module and the second acquisition module are both acquisition modules, but are not the same acquisition module.

It will be understood that when an element is referred to as being "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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2, the present application provides a tuning and matching apparatus for a magnetic resonance imaging device. In one possible implementation, the magnetic resonance imaging device is an ultra-high field animal magnetic resonance imaging device, for example, a 9.4T animal magnetic resonance imaging device. The magnetic resonance imaging apparatus comprises a transmit coil 11. The tuning and matching means comprise display interaction means 20 and tuning and matching control means 30.

The display interaction device 20 is disposed in the scanning room. The display interaction device 20 is connected to the transmitting coil 11, and can control the transmitting coil 11 to transmit the test radio frequency pulse or stop transmitting the test radio frequency pulse. It will be appreciated that the test rf pulses may also be controlled by other internal control means connected to the display device. For example, it is shown that the interactive device 20 is turned on, i.e. controls the transmitting coil 11 to start transmitting the test rf pulse, and is turned off, i.e. controls the transmitting coil 11 to stop transmitting the test rf pulse. The tuning and matching control means 30 are connected to the transmission coil 11, and the tuning control means 30 are adapted to tune and match the radio frequency coil when the radio frequency coil transmits a test radio frequency pulse. The display interaction means 20 is used to display tuning and matching data.

Referring to fig. 3, optionally, the display interaction means 20 is arranged close to the tuning and matching control means 30. The display interaction device 20 being located close to the tuning and matching control device 30 means that the display interface of the display interaction device 20 is in the vicinity of the tuning and matching control device 30, so that the staff can also view the tuning and matching data when adjusting the tuning and matching control device 30.

It can be understood that the radio frequency pulse generated by the radio frequency power amplifier can excite the transmitting coil 11 to generate a uniform radio frequency field, so as to excite the body to be scanned to generate a magnetic resonance signal. The receive coil may receive magnetic resonance signals generated from a body to be scanned. The body to be scanned may be an animal. In detail, the transmission coil 11 may transmit an RF signal having the same frequency as that of a spin-in motion to nuclei having a spin-in motion included in a body to be scanned. The receive coils then receive MR signals emitted from nuclei included in the body to be scanned.

For example, in order to convert nuclei from a low energy state to a high energy state, the transmission coil 11 may generate and apply an electromagnetic wave signal, e.g., an RF signal, having an RF corresponding to the type of nuclei to the subject. When the electromagnetic wave signal generated by the transmitting coil 11 is applied to the nuclei, the nuclei may transition from a low energy state to a high energy state. Then, after the transmission coil 11 stops generating the electromagnetic wave, the nuclei to which the electromagnetic wave is applied are changed from a high energy state to a low energy state, thereby transmitting the electromagnetic wave having a larmor frequency. In other words, when the application of the electromagnetic wave signal to the atomic nucleus is stopped, the energy level of the atomic nucleus is changed from a high energy level to a low energy level, and thus the atomic nucleus can emit an electromagnetic wave having a larmor frequency. The receiving coil may receive an electromagnetic wave signal from nuclei included in the object. The received electromagnetic wave signal may be referred to as a Free Induction Decay (FID) signal.

In one possible implementation, the transmitting Coil 11 is configured as a Volume Coil (VTC) corresponding to the operating frequency of the magnetic resonance system. The receiving coils are configured as Loop coils (LC, Loop Coil) of the same frequency.

The transmission coil 11 and the reception coil may communicate with an external device via wire and/or wirelessly, and may also perform double tuning and matching communication according to a communication band.

The transmitting coil 11 is generally a dual-channel coil, and is used for orthogonal excitation and can generate a uniform radio frequency field; the receive coil may be a single channel radio frequency coil, a dual channel radio frequency coil, or a multi-channel radio frequency coil.

It is understood that the structure of the display interaction device 20 is not particularly limited as long as the radio frequency coil can be controlled to emit test radio frequency pulses and the tuning and matching data can be displayed.

Referring to fig. 4, in one embodiment, the display interaction device 20 includes a control host 21, a display panel 22, and a data acquisition device 23. One end of the control host 21 is in signal connection with the transmitting coil 11. The display panel 22 is in signal connection with the other end of the control host 21. Starting tuning and matching information is input through the display panel 22, and the starting tuning and matching information is sent to the transmitting coil 11 through the control host 21 so as to control the transmitting coil 11 to transmit a test pulse.

The input end of the data acquisition device 23 is in signal connection with the tuning and matching control device 30 and is used for acquiring tuning and matching data, and the output end of the data acquisition device 23 is in signal connection with the display interaction device 20 and is used for sending the tuning and matching data to the display interaction device 20 for displaying.

Referring to fig. 5, the position of the control host 21 is not specifically limited, and referring to fig. 5, in one embodiment, the control host 21 may be disposed between cabinets to reduce magnetic field interference. The control host 21 may pre-store RF pulses at larmor frequency. The start-up tuning and matching information may be information that the test pulse triggers the transmission. When the control host 21 receives the start tuning information, an RF pulse of a larmor frequency is supplied to the transmission coil 11 to control the transmission coil 11 to transmit a test pulse.

It will be appreciated that the present application utilizes the tuning and matching control means 30 to perform tuning and matching, and thereafter transmits the tuning and matching data to the display interaction means 20 for display. No action is required on the operator console 201 during tuning and matching. Of course, the operator's console 201 may also be connected to the transmitting coil 11 through the console host 202 for inputting startup tuning and matching information and displaying tuning and matching data in the console 201, if necessary.

Optionally, referring to fig. 6 and 7, a trigger key and a stop key are disposed on the display panel 22. The user sends the start tuning and matching information to trigger start tuning and matching by clicking a trigger button, and the user stops tuning and matching by clicking a stop button. In one embodiment, the display panel 22 includes a plurality of functional areas that cooperate to enable the input of start-up tuning and matching information and/or stop tuning and matching information to the radio frequency coil and display of the tuning and matching data.

In one of the possible implementations, the plurality of functional areas include a display area 221, an operation area 222, and a prompt area 223.

The display area 221 is used to display the tuning and matching data. The operation area 222 is used to input the start-up tuning and matching information and/or the stop-up tuning and matching information.

Specifically, the display area 221 may be above the display panel 22. The upper left hand side shows the tuning and matching data (rf pulse frequency-reflection coefficient curve), where the vertical axis represents the reflection coefficient and the horizontal axis represents the relative frequency (according to larmor equation w r B) ₀ R is the magnetic rotation ratio of hydrogen atoms in water, B ₀ The field intensity of the main magnetic field, w is the resonance frequency of hydrogen atoms in water under the field intensity of 9.4T); the relevant data during the tuning and matching process can be displayed on the upper left of the display panel 22 in real time, and the tuning and matching state can be known in real time and the tuning and matching can be guided based on the displayed tuning and matching data. And because the data curve that shows more accurate compares in current pilot lamp display scheme, the demonstration of this application enables tuning and matches more accurately. The upper right is a prompt area 223 for prompting the channel of the transmitting coil which should be tuned and matched currently, the screw corresponding to the channel which should be tuned and matched currently, and/or the screw which should be adjusted for prompting the channel which should be tuned and matched currently. The prompt field 223 displays the type of the rf coil and the position of the knob that needs to be operated currently. I.e. the user can be instructed how to adjust the screw 31 of the tuning and matching control device 30 by displaying the position of the knob to be operated in the upper right.

Below the display panel 22 may be an operation area 222. The operation region 222 may include a start tuning key, a stop tuning key, a channel selection key, and an exit tuning key. The channel selection key is positioned in the channel switching area and used for switching the tuned channel, and the tuning key simultaneously comprises tuning and matching functions.

It is to be understood that the structure of the tuning and matching control device 30 is not particularly limited as long as the radio frequency coil can be tuned and matched. The transmitting coil 11 may be tuned and matched by the tuning and matching control means 30, and the tuning and matching control means 30 may be electrically connected to the transmitting coil 11.

In one possible embodiment, the tuning and matching control means 30 may comprise at least one adjustable capacitance. The tuning and matching control means 30 may tune and match the transmission coil 11 based on whether an RF signal is transmitted through the transmission coil 11. The tuning and matching control means 30 may adjust the resonance frequency and impedance of the transmitting coil 11. The resonance frequency and the impedance of the transmitting coil 11 can be adjusted separately by changing the capacitance value of the adjustable capacitor.

Alternatively, the tuning and matching control means 30 is a manual tuning and matching means, i.e. the tuning and matching control means 30 may comprise a tuning screw 31 and a tuning and matching circuit 32. The tuning screw 31 is connected to a transmitting coil 11 (in an alternative embodiment, a volume coil), the transmitting coil 11 is disposed in a gradient coil in the gantry 100, and the tuning screw 31 can extend out of the gantry 100. The display panel 22 is disposed on an outer surface of the chassis 100. And the tuning screw 31 and at least one of the display panels 22 are located on the same side of the housing. Optionally, the display panel 22 is disposed adjacent to the tuning screw 31. The display panel 22 is disposed close to the tuning screw 31, which means that the display interface of the display panel 22 is near the tuning screw 31, so that the staff can also view tuning and matching data when adjusting the tuning screw 31. Of course, it is understood that the display panel 22 may be provided in a plurality and disposed at different positions of the rack 100. A plurality of display panels 22 may be provided on one side of the chassis 100, or may be provided on different sides of the chassis. The input end of the tuning and matching circuit 32 is connected to the tuning screw 31, the output end of the tuning circuit 32 is electrically connected to the transmitting coil 11, and the output capacitance of the tuning and matching circuit 32 is adjusted by adjusting the tuning screw 31 to tune and match the transmitting coil 11. The tuning and matching circuit 32 may include at least two tunable capacitors. Each tuned and matched channel corresponds to two tuning screws 31, and a prompt icon is correspondingly arranged at the spatial arrangement position of each tuning screw 31 in the prompt area 223. For example, referring to fig. 6, the cross-sectional positions of the four tuning screws 31 correspond to the rotation icons T1, M1, T2 and M2 of the display interaction device 20 one by one. Optionally, each tuning screw 31 is provided with a mark corresponding to the prompt icon. That is, it can be understood that the tuning screw 31 corresponding to the TI rotary icon is provided with a mark of "T1", and the tuning screw 31 corresponding to the MI rotary icon is provided with a mark of "M1", and the like.

The tuning and matching control means 30 may also comprise at least one switching element. For example, the switching element may be a diode, e.g., a positive-intrinsic-negative (PIN) diode. The tuning and matching control means 30 may tune and match the radio frequency coil based on whether an RF signal is transmitted or received by the radio frequency coil. The radio frequency coil can be detuned and matched by the switched-off tuning control device 30 and the radio frequency coil can be tuned and matched by the switched-on tuning and matching control device 30, or vice versa. The tuning and matching control means 30 may be switched by means of PIN diodes based on the transmission and reception of RF signals.

Upon entering the tuning and matching interface, the upper information display area 221 has no relevant information. Clicking the lower part (starting tuning) (after the tuning is started, the current button is displayed as stop tuning), the system enters a tuning and matching state, starts to send tuning and matching data to the display panel 22, and the display panel 22 draws the tuning and matching data in the display area 221 after acquiring the data. After Tuning is started, the acquired VTC model is displayed in the upper right area, the current VTC model is defaulted to be the first channel, the T1 and M1 rotating icons in the prompt area 223 are highlighted (T represents Tuning, M represents Match, and T1 and M1 are a group of channels), the T1 Tuning screw and the M1 Tuning screw are prompted to be turned currently, and meanwhile, a data curve of the first channel is drawn in the upper left area. Wherein the T1 tuning screw is used to tune the resonant frequency of the first channel of the transmitter coil and the M1 tuning screw is used to tune the impedance matching of the first channel of the transmitter coil. Clicking (next channel), highlighting the rotating icons of T2 and M2 in the prompt area 223 to prompt that the T2 tuning screw and the M2 tuning screw should be rotated currently, and simultaneously drawing a data curve of the second channel in the upper left area. Wherein the T2 tuning screw is used to tune the resonant frequency of the second channel of the transmitter coil and the M2 tuning screw is used to tune the impedance matching of the second channel of the transmitter coil. After tuning is finished, the user can check the channel through the channel (the previous channel) and the channel (the next channel), and after the user confirms that the user is correct, the user can click the channel (quit tuning) to quit tuning and matching interface.

Optionally, in the prompt area, the rotation icon is also used to prompt the current transmit coil to tune the tuning screw 31 corresponding to the matched channel, specifically, the rotation icon may prompt the rotating tuning screw. For example, when the T1 and M1 rotary icons in the notification area 223 are highlighted, but the rotating tuning screws 31 are T2 tuning screws and M2 tuning screws, the T2 and M2 rotary icons in the notification area 223 are also lighted to prompt the operator to switch to the tuning screws 31 that should be rotated as soon as possible. In one possible implementation, the T2 and M2 spin icons are highlighted in a different color or animation than the T1 and M1 spin icons in normal operation as a cue for abnormal operation. For example, the T1 and M1 spin icons for normal operation are colored green and/or a clockwise spin animation; if the T2 tuning screw or the M2 tuning screw is misoperated, the T2 or the M2 rotates the icon to display a red and/or counterclockwise rotation animation.

In one possible implementation, the tuning and matching control means 30 may be an active circuit. For example, the tuning and matching control means 30 as an active circuit may comprise at least one PIN diode. The bias circuit may be switched by a PIN diode powered by a Direct Current (DC) power supply.

In one possible implementation, the tuning and matching control means 30 may be a passive circuit. For example, the tuning and matching control means 30 as a passive circuit may comprise at least two PIN diodes connected back-to-back in parallel. The bias circuit may be switched by two PIN diodes using a voltage induced by an RF signal transmitted in the RF signal transmission mode.

The switching requirements of the tuning and matching control 30 may differ based on the elements of the tuning and matching control 30, the connectivity between the elements, the size or type of power supply connected to the bias circuit, etc.

The data acquisition device 23 may monitor the tuning and matching control device 30. The data acquisition device 23 may monitor one or both of the bias voltage and the bias current of the tuning control/matching device 30. The bias voltage or bias current of the tuning and matching control 30 is monitored so that it can be determined whether the tuning and matching control 30 is suitably operative to tune and match the radio frequency coil. After the data acquisition device obtains one or both of the bias voltage and the bias current of the tuning and matching control device 30, data conversion to reflection coefficients may be performed for display in the display panel 22. For example, after the bias voltage of the tuning and matching control device 30 is obtained from the acquisition device, it can be converted into a reflection coefficient by the ratio to the input voltage.

Of course, it will be understood that the data acquisition means 23 may also acquire the model of the currently tuned and matched transmit coil 11 and the tuned and matched channel.

The gantry 100, the transmit coil 11, the display interaction means 20, the tuning and matching control means 30 and the data acquisition means 23 may be connected to each other by wire or wirelessly, and when they are wirelessly connected, the magnetic resonance imaging apparatus may further comprise means for synchronizing a clock signal therebetween. The communication between the chassis 100, the transmitting coil 11, the display interaction means 20, the tuning and matching control means 30 and the data acquisition means 23 may be performed by using a high-speed digital interface such as Low Voltage Differential Signaling (LVDS), asynchronous serial communication such as universal asynchronous receiver/transmitter (UART), a low-delay network protocol such as error synchronous serial communication or Controller Area Network (CAN), optical communication, or any other various communication methods known to those of ordinary skill in the art.

The magnetic resonance imaging device may further comprise a communication interface. The communication interface may be connected to at least one selected from the housing 100, the display interaction means 20, the tuning control means 30 and the data acquisition means 23 of fig. 5.

The communication interface may transmit and receive data to and from a server or another medical device connected through a Picture Archiving and Communication System (PACS), and perform data communication according to the digital imaging and communications in medicine (DICOM) standard.

The communication interface may be connected to a network by wire or wirelessly to communicate with a server, medical device, or portable device.

Furthermore, the communication interface may send information about a malfunction of the magnetic resonance imaging apparatus or about the medical image quality to the user over the network and receive feedback about the information from the user.

The communication interface may include at least one component capable of communicating with an external device. For example, the communication interface may include a local area communication interface, a wired communication interface, and a wireless communication interface.

The local area communication interface refers to an interface for performing local area communication with a device within a predetermined distance. Examples of local area communication technologies according to example embodiments of the present disclosure include, but are not limited to, wireless Local Area Networks (LANs), Wi-Fi, bluetooth, ZigBee, Wi-Fi direct (WFD), Ultra Wideband (UWB), infrared data association (IrDA), Bluetooth Low Energy (BLE), and Near Field Communication (NFC).

The wired communication interface refers to an interface for performing communication by using an electrical signal or an optical signal. Examples of wired communication technologies according to example embodiments of the present disclosure include wired communication technologies using twisted pair cables, coaxial cables, and fiber optic cables, and other well-known wired communication technologies.

The wireless communication interface transmits and receives wireless signals to and from at least one selected from a base station, an external device, and a server in the mobile communication network. Here, the wireless signal may be a voice call signal, a video call signal, or data in any one of various formats according to transmission and reception of text/multimedia messages.

When the magnetic resonance imaging device in the present application performs tuning and matching, the tuning and matching control device 30 performs tuning and matching, and then sends tuning and matching data to the display interaction device 20 for displaying. In the tuning and matching process, the console 201 in the operating room does not need to be operated, so that the complexity of the tuning and matching process is reduced, and the working efficiency is improved. And since the display interaction device 20 is disposed between the scans, tuning and matching data displayed on the display interaction device 20 can be viewed in real time, making tuning and matching more accurate.

Based on the same inventive concept, the present application provides a tuning and matching method of a magnetic resonance imaging apparatus, which tunes and matches a transmit coil using the tuning and matching device of any one of the above embodiments.

The tuning and matching method comprises controlling the transmitting coil 11 to transmit a test pulse by means of the display interaction device 20; when the radio frequency coil transmits a test pulse, the radio frequency coil is tuned and matched by the tuning and matching control means 30 and the tuning and matching data is displayed by the display interaction means 20.

It will be appreciated that the present application utilizes the tuning and matching control means 30 to perform tuning and matching, and thereafter transmits the tuning and matching data to the display interaction means 20 for display. In the tuning and matching process, the operation on the console 201 in the operation room is not needed, so that the complexity of the tuning and matching process is reduced, and the working efficiency is improved. Of course, the console 201 of the operating room may also be connected to the transmitting coil 11 and the receiving coil, respectively, through the console host 202, for inputting start-up tuning and matching information and displaying the tuning and matching data in the console 201, if necessary.

Before an animal body is scanned, the transmitting coil 11 is firstly installed and fixed at the central position of the aperture of the gradient coil, meanwhile, the cross section positions of four tuning screws 31 of the transmitting coil at the rear end of the magnet correspond to the rotating icons T1, M1, T2 and M2 of the display interaction device 20 one by one, at the moment, the prompting area 223 automatically displays the identified model number of the transmitting coil 11, and if a tuning and matching interface is triggered, a reflection coefficient curve displayed by the display area 221 of the display panel represents the resonant frequency and impedance matching of each channel when the transmitting coil is in no-load; then, the animal body and the receiving coil which are installed and fixed are positioned to the central position of the transmitting coil, the reflection coefficient curve of the display area 221 deviates from the track when the animal body is unloaded along with pushing, and finally, tuning and matching are carried out: if the tuning screw of the T1 and the tuning screw of the M1 are rotated, the rotating icons of the T1 and the M1 in the prompt area 223 are highlighted, the curve change of the reflection coefficient of the first channel can be displayed in real time in the display area 221, and the rotating icons of the T2 and the M2 in the prompt area 223 are highlighted by rotating the tuning screw of the T2 and the tuning screw of the M2, and the curve change of the reflection coefficient of the second channel can be displayed in real time in the display area. Thus, the first channel and the second channel are tuned and matched respectively until the lowest point of the emission coefficient curve of each channel moves to a standard area set by people (such as the horizontal axis is +/-0.2, and the vertical axis is within 0.1), the tuning and the matching can be finished, and the tuning is stopped by clicking and the channel is withdrawn.

Based on the same inventive concept, the present application provides a magnetic resonance imaging apparatus comprising the tuning and matching device of any one of the above embodiments.

Based on the same inventive concept, the application provides a tuning and matching device of a magnetic resonance imaging apparatus. The magnetic resonance imaging apparatus comprises a gantry, and the tuning and matching device comprises a display interaction device. The display interaction device comprises a display panel, the display panel is arranged on the rack, and the display panel is used for displaying tuning and matching data.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A tuning and matching apparatus of a magnetic resonance imaging device comprising a transmit coil and a gantry, characterized in that the tuning and matching apparatus comprises:

the transmitting coil is arranged in a gradient coil in the stand, the tuning screw rod extends out of the stand, and the tuning screw rod and the at least one display panel are positioned on the same side of the stand.

2. The tuning and matching apparatus of a magnetic resonance imaging device according to claim 1, wherein the display panel comprises a plurality of functional areas, the plurality of functional areas comprising:

a display area for displaying the tuning and matching data; and

3. The tuning and matching device of claim 2, wherein the operating region further comprises: a channel switching region for switching channels tuned and matched by the transmit coil.

4. The apparatus of claim 3, wherein each of said tuned channels corresponds to two of said tuning screws, said two tuning screws adjusting impedance matching and resonant frequency of the transmit coil channel, respectively.

5. The tuning and matching apparatus of a magnetic resonance imaging device according to claim 4, wherein the plurality of functional zones further comprises:

and the prompting area is used for prompting the currently rotating tuning screw and/or is used for prompting the tuning screw which is currently tuned or matched with the transmitting coil and is adjusted.

6. The tuning and matching device of claim 5, wherein a prompt icon is disposed at the prompt region corresponding to the spatial location of each tuning screw; and each tuning screw is provided with a mark corresponding to the prompt icon.

7. The tuning and matching device of claim 6, wherein the prompt icon prompts the channel to be tuned and matched by highlighting and/or animation.

8. The tuning and matching device of a magnetic resonance imaging apparatus according to any one of claims 1-7, wherein the tuning and matching control device further comprises:

and the input end of the tuning and matching circuit is connected with the tuning screw rod, and the output end of the tuning and matching circuit is electrically connected with the transmitting coil.

9. The apparatus according to any one of claims 1-7, wherein the display interface means comprises data acquisition means for performing data conversion to reflection coefficients for display on the display panel after the data acquisition means acquires one or both of the bias voltage and the bias current of the tuning and matching control means.

10. A magnetic resonance imaging apparatus, characterized in that it comprises a tuning and matching device according to any of the preceding claims 1-9.