Magnetic resonance imaging method and magnetic resonance imaging device

Abstract

The embodiment of the invention provides a magnetic resonance imaging method and a magnetic resonance imaging device.The method is executed by the magnetic resonance imaging device.The method comprises the steps that the working frequency of electronic equipment located in a scanning room and / or entering the scanning room is adjusted, and the adjusted frequency of the electronic equipment is located outside the working frequency range of the magnetic resonance imaging device; wherein the adjustment comprises the step of performing clock synchronization on the magnetic resonance imaging device and the electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of magnetic resonance technology, and in particular to a magnetic resonance imaging method and a magnetic resonance imaging device. Background Art

[0002] In order to ensure the clarity of the image, magnetic resonance imaging technology is extremely sensitive to noise within the frequency bandwidth. With the rapid development of medical technology and biomedical engineering, more and more electronic devices are brought into the scanning room of magnetic resonance imaging to support more complex and accurate diagnosis and treatment processes. However, electronic devices will generate specific electromagnetic waves during operation, and their frequency range may overlap with the operating frequency of the magnetic resonance imaging device. Since the working principle of the magnetic resonance imaging device relies on precisely controlled radio frequency pulses and magnetic field gradients, any external electromagnetic interference may lead to a decrease in image quality, a decrease in signal-to-noise ratio, and even data acquisition errors, seriously affecting the final diagnosis results.

[0003] Therefore, it is desired to provide a magnetic resonance imaging method and a magnetic resonance imaging apparatus, which can ensure that the electronic device can work normally in the magnetic resonance imaging scanning room without causing negative impact on the performance of the magnetic resonance imaging apparatus. Summary of the invention

[0004] One or more embodiments of the present specification provide a magnetic resonance imaging method, which is performed by a magnetic resonance imaging device, and the method includes: adjusting the operating frequency of an electronic device located in a scanning room and / or entering the scanning room, wherein the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes synchronizing the clocks of the magnetic resonance imaging device and the electronic device.

[0005] In some embodiments, the method of synchronizing the clocks of the magnetic resonance imaging device and the electronic device includes at least one of the following: connecting the magnetic resonance imaging device and the electronic device via a cable; screening and / or frequency testing the electronic device; sending a wireless clock signal to the electronic device via wireless clock broadcasting.

[0006] In some embodiments, there are multiple electronic devices, and sending a wireless clock signal to the electronic devices through wireless clock broadcasting includes: the wireless clock broadcasting sends the wireless clock signal to each of the multiple electronic devices in a one-to-many manner in a unidirectional manner.

[0007] In some embodiments, the wireless clock signal is used to synchronize a first clock frequency of the electronic device with a second clock frequency of the magnetic resonance imaging device.

[0008] In some embodiments, the wireless clock signal is used to desynchronize a first clock phase of the electronic device with a second clock phase of the magnetic resonance imaging device.

[0009] In some embodiments, the wireless clock signal is transmitted via a carrier, and the carrier includes at least one of infrared, electromagnetic waves and ultrasonic waves.

[0010] One or more embodiments of the present specification provide a magnetic resonance imaging device, which is configured to: adjust the operating frequency of electronic equipment located in a scanning room and / or entering the scanning room, wherein the adjusted frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes synchronizing the clocks of the magnetic resonance imaging device and the electronic equipment.

[0011] In some embodiments, the magnetic resonance imaging device includes a wireless clock broadcasting module, which is configured to send a wireless clock signal to the electronic device via wireless clock broadcasting; the wireless clock broadcasting module includes a standard clock source, a power amplifier and a wireless transmitter; the standard clock source is configured to generate a standard clock; the power amplifier is configured to amplify the standard clock and transmit it to the wireless transmitter; the wireless transmitter is configured to convert the amplified standard clock into the wireless clock signal.

[0012] In some embodiments, the electronic device includes a wireless clock receiving module, which includes a wireless receiver and a signal amplifier; the wireless receiver is configured to receive the wireless clock signal and perform signal conversion; the signal amplifier is configured to amplify the converted signal.

[0013] In some embodiments, the electronic device includes a first device related to magnetic resonance scanning, and the first device includes at least one of a wireless coil, a scanning bed, a power transmission module, a signal receiving module, and a safety monitoring module.

[0014] In some embodiments, the electronic device includes a second device unrelated to magnetic resonance scanning, and the second device includes a patient monitoring module, a patient sensing module, a high-pressure injection module, a physiological monitoring module, a patient care module, an environmental monitoring module, a mobile controller carried by a caregiver and / or a doctor, a computer, and at least one of a mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] This specification will be further described in the form of exemplary embodiments, which will be described in detail by the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0016] Figure 1 is an exemplary schematic diagram of a magnetic resonance imaging method according to some embodiments of the present specification;

[0017] Figure 2 is an exemplary schematic diagram of a wired clock synchronization link connection according to some embodiments of this specification;

[0018] Figure 3 is an exemplary schematic diagram of a wireless clock broadcast module according to some embodiments of this specification;

[0019] Figure 4 is an exemplary schematic diagram of a wireless clock receiving module according to some embodiments of this specification;

[0020] Figure 5 is an exemplary flow chart of wireless clock synchronization according to some embodiments of this specification;

[0021] Figure 6 is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to some embodiments of this specification;

[0022] Figure 7 is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to other embodiments of this specification;

[0023] Figure 8 It is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to other embodiments of the present specification. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of this specification. For ordinary technicians in this field, this specification can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0025] It should be understood that the "system", "device", "unit" and / or "module" used herein are a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0026] Unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0027] Flowcharts are used in this specification to illustrate the operations performed by the system according to the embodiments of this specification. It should be understood that the preceding or following operations are not necessarily performed precisely in order. Instead, the steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0028] Magnetic resonance imaging technology uses high-intensity magnetic fields and radio frequency pulses to obtain images of the internal structures of the human body. In magnetic resonance imaging, radionuclides have specific Larmor precession frequencies under specific magnetic fields. The acquired signals are modulated by gradient magnetic fields and radio frequency signals, and the acquired signals are distributed within a specific frequency bandwidth. In order to maintain image quality, magnetic resonance imaging is sensitive to noise within the bandwidth, and electronic equipment is usually restricted from entering the scanning room of magnetic resonance imaging to eliminate external interference.

[0029] Therefore, the embodiments of the present specification provide a magnetic resonance imaging method and system, which adjusts the operating frequency of an electronic device located in and / or entering a scanning room so that the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging device, thereby ensuring that the electronic device can operate normally in the scanning room of the magnetic resonance imaging without negatively affecting the performance of the magnetic resonance imaging device. Furthermore, by adjusting the operating frequency of the electronic device in a manner that the magnetic resonance imaging device and the electronic device are clock-synchronized, a more efficient and reliable frequency adjustment can be achieved.

[0030] Figure 1 is an exemplary schematic diagram of a magnetic resonance imaging method according to some embodiments of the present specification.

[0031] In some embodiments, Figure 1 As shown, the magnetic resonance imaging device adjusts the operating frequency 110 of an electronic device 130 located in and / or entering the scanning room, and the adjusted frequency of the electronic device is outside the operating frequency range 150 of the magnetic resonance imaging device; wherein the adjustment of the operating frequency includes clock synchronization 140 of the magnetic resonance imaging device 120 and the electronic device 130.

[0032] The operating frequency range of a magnetic resonance imaging device refers to the frequency range in which the collected signals are distributed when the collected signals are modulated by gradient magnetic fields and radio frequency signals during the imaging process using magnetic resonance imaging technology.

[0033] The scanning room refers to the space where the MRI device is located. The scanning room is a shielded and isolated space between the MRI device and the outside world to ensure the accuracy of the MRI results.

[0034] An electronic device is any device made up of electronic components.

[0035] In some embodiments, the electronic device includes a first device associated with magnetic resonance scanning.

[0036] The first device refers to a device that participates in the magnetic resonance imaging process, directly participates in or supports the magnetic resonance scanning process. In some embodiments, the first device includes at least one of a wireless coil, a scanning bed, a power transmission module, a signal receiving module, and a safety monitoring module.

[0037] In some embodiments, the wireless coil may include a coil and a magnetic resonance signal receiver, wherein the coil is used to receive a radio frequency signal, and the magnetic resonance signal receiver is used to convert the radio frequency signal into a digital signal and transmit it wirelessly.

[0038] Radio frequency signals are signals used to excite and detect magnetic resonance phenomena in tissues within a patient's body.

[0039] The scanning bed refers to a bed in a magnetic resonance imaging device for placing a patient for scanning. In some embodiments, the scanning bed is provided with an electronic controller to control the movement of the scanning bed during the magnetic resonance scanning process.

[0040] The power transmission module refers to a module used to adjust and transmit the power of the radio frequency signal.

[0041] In some embodiments, the magnetic resonance imaging device can control the output power through the power transmission module to provide radio frequency pulses.

[0042] The signal receiving module refers to a module used for receiving radio frequency signals released from excited hydrogen nuclei in the patient's body.

[0043] In some embodiments, the magnetic resonance imaging device can receive, amplify, pre-process, digitize and transmit radio frequency signals through a signal receiving module to ensure high-quality image generation.

[0044] The safety monitoring module refers to a module for real-time monitoring and management of relevant parameters (e.g., magnetic field strength, radio frequency radiation level, etc.) during magnetic resonance scanning. In some embodiments, the safety monitoring module includes sensors, alarms, or other safety devices.

[0045] In some embodiments, the magnetic resonance imaging device can monitor and manage relevant parameters in real time through a safety monitoring module, thereby preventing and responding to potential dangerous situations in advance, improving the overall safety and reliability of the magnetic resonance imaging device, and ensuring the safety of patients and operators.

[0046] In some embodiments of the present specification, since the operating frequency of the electronic device may overlap or conflict with the operating frequency of the magnetic resonance imaging device, interference may occur. Therefore, by synchronizing the clock of the first device related to the magnetic resonance scanning with the magnetic resonance imaging device, the frequency interference between the magnetic resonance imaging device and the first device during the magnetic resonance scanning process can be avoided, the image quality and signal-to-noise ratio can be improved, and the accuracy of the diagnosis result can be improved.

[0047] In some embodiments, the electronic device includes a second device unrelated to the magnetic resonance scanning.

[0048] The second device refers to a device that does not directly participate in or support the magnetic resonance scanning process. In some embodiments, the second device includes at least one of a patient monitoring module, a patient sensing module, a high-pressure injection module, a physiological monitoring module, a patient care module, an environmental monitoring module, a mobile controller carried by a caregiver and / or a doctor, a computer, a mobile phone, etc.

[0049] The patient monitoring module refers to a module used to monitor the patient's vital signs in real time and provide early warnings. For example, the patient monitoring module includes a respiratory monitor, an alarm, and the like.

[0050] In some embodiments, the magnetic resonance imaging device can monitor the patient's physiological parameters and status in real time through the patient's monitoring module, which helps the operator to promptly detect and handle potential emergencies and ensure the smooth progress of the scanning process.

[0051] The patient's perception module refers to a module used to perceive various physiological states of the patient in real time during the scanning process. For example, the patient's perception module includes a pressure pad and the like.

[0052] In some embodiments, the magnetic resonance imaging device can sense the patient's physiological state, such as pressure distribution, in real time through the patient's sensing module, and can promptly detect abnormal conditions during the scanning process, such as patient movement or discomfort, so as to take measures to prevent potential risks.

[0053] The high-pressure injection module refers to a module used to inject contrast agents and the like into a patient's body during contrast agent enhanced scanning. For example, the high-pressure injection module includes a syringe, an injection pump, and the like.

[0054] In some embodiments, the magnetic resonance imaging device can quickly and accurately inject contrast agents through a high-pressure injection module, which can not only significantly improve image quality and diagnostic accuracy, but also ensure patient safety.

[0055] The physiological monitoring module refers to a module for monitoring the physiological data of the patient. Physiological monitoring may include multiple monitoring, for example, at least one of heart rate monitoring, respiration monitoring, blood oxygen saturation monitoring, blood pressure monitoring, and body temperature monitoring. In some embodiments, the physiological monitoring module includes a heart rate monitor, a respiration monitor, a blood oxygen saturation monitor, a sphygmomanometer, a body temperature monitor, and the like.

[0056] In some embodiments, the magnetic resonance imaging device can monitor the patient's physiological parameters in real time during the scanning process through the physiological monitoring module, ensure continuous monitoring of the patient's vital signs, and help operators to detect and deal with abnormal situations in a timely manner.

[0057] The patient care module refers to a module used to assist patients in magnetic resonance imaging examinations and provide a comfortable environment. For example, the patient care module includes a temperature control device, a lighting adjustment device, and the like.

[0058] In some embodiments, the magnetic resonance imaging device can perform physiological monitoring, psychological support, physical support and corresponding emergency management for the patient through the patient care module, which helps the operator to promptly detect and handle potential emergencies and ensure the smooth progress of the scanning process.

[0059] The environment monitoring module refers to a module used to monitor and manage various indoor environmental parameters in real time. For example, the environment monitoring module includes a temperature sensor, a humidity sensor, a magnetic field intensity meter, etc.

[0060] In some embodiments, the magnetic resonance imaging device can monitor and manage the environmental parameters in the scanning room in real time through the environmental monitoring module, which helps the operator to promptly discover and deal with potential environmental problems and ensure the smooth progress of the scanning process.

[0061] A mobile controller refers to a device used to remotely control a magnetic resonance imaging device or interact with a patient. For example, a mobile controller includes a handheld terminal, an intercom, etc.

[0062] In some embodiments, the magnetic resonance imaging device can improve scanning efficiency and patient safety by moving the controller, while optimizing workflow, reducing misoperation, enhancing aseptic operation capabilities, and allowing operators to perform multitasking.

[0063] In some embodiments of the present specification, by using a second device that is not related to magnetic resonance scanning, the patient's vital signs and physiological indicators can be better monitored to ensure the patient's safety and improve the patient's comfort. By synchronizing the clock of the second device with the magnetic resonance imaging device, the frequency interference between the magnetic resonance imaging device and the second device during the magnetic resonance scanning process can be avoided, which not only improves the image quality and signal-to-noise ratio, improves the accuracy of the diagnosis results, but also assists in the monitoring, perception, and care of the patient or environment during the magnetic resonance scanning process.

[0064] In some embodiments, the electronic device includes a wireless clock receiving module, and the wireless clock receiving module includes a wireless receiver and a signal amplifier. For more information, see Figure 4 Related description.

[0065] The operating frequency of an electronic device refers to the frequency at which the electronic device transmits or receives electromagnetic waves when in operation. The operating frequency of an electronic device can be a fixed value or a frequency range. Different electronic devices have different operating frequencies.

[0066] In some embodiments, the magnetic resonance imaging device can adjust the operating frequency of the electronic equipment located in and / or entering the scanning room in a variety of ways so that the operating frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging device to avoid interference of the electronic equipment to the magnetic resonance imaging device. In some embodiments, the magnetic resonance imaging device can synchronize the clocks of the magnetic resonance imaging device and the electronic equipment.

[0067] Clock synchronization refers to synchronizing the MRI device and at least one electronic device under the same source clock. In the standard operating procedures of the MRI device, the MRI device needs to achieve the same source clock synchronization in the scanning room, that is, all electronic devices need to share the same master clock signal source (standard clock source). Through precise frequency planning, the operating frequency of the electronic device is outside the operating frequency range of the MRI device, which can effectively suppress the noise within the bandwidth.

[0068] In some embodiments, the method of synchronizing the clocks of the magnetic resonance imaging device and the electronic device includes: connecting the magnetic resonance imaging device and the electronic device via a cable; screening and / or frequency testing the electronic device; or sending a wireless clock signal to the electronic device via wireless clock broadcasting, etc.

[0069] For more information on connecting MRI equipment to electronic devices via cables, see Figure 2 Related description.

[0070] In some embodiments, electronic devices located in and / or entering the scanning room can be screened and / or frequency tested in real time to determine whether the operating frequency of the electronic device is within the operating frequency range of the magnetic resonance imaging device. For example, in the case of a known operating frequency range of the magnetic resonance imaging device, the operating frequency of the electronic device in the scanning room is tested, and in response to the operating frequency of the electronic device in the scanning room being within the operating frequency range of the magnetic resonance imaging device, the operating frequency of the electronic device can be adjusted so that the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging device. For another example, in the case of a known operating frequency range of the magnetic resonance imaging device, the operating frequency of the electronic device that is about to enter the scanning room is tested, and only electronic devices with operating frequencies outside the operating frequency range of the magnetic resonance imaging device can enter the scanning room. For another example, in response to the operating frequency of the electronic device that is about to enter the scanning room being within the operating frequency range of the magnetic resonance imaging device, the operating frequency of the electronic device is first adjusted so that its operating frequency is outside the operating frequency of the magnetic resonance imaging device, and then enter the scanning room after the adjustment.

[0071] Wireless clock broadcasting refers to sending signals to electronic devices by wireless broadcasting. Wireless clock broadcasting is transmitted in the space of the MRI scanning room through electromagnetic waves, light waves, sound waves and other media carrying standard clock signals.

[0072] In some embodiments, through the form of wireless clock broadcasting, the aforementioned electronic device can achieve wireless clock synchronization with the standard clock source after receiving the wireless clock signal, thereby ensuring the clock synchronization between the magnetic resonance imaging device and the electronic device. For more information about wireless clock synchronization, please refer to Figure 5 Related description.

[0073] The wireless clock signal refers to a signal sent by the magnetic resonance imaging device through wireless broadcasting. In some embodiments, the wireless clock signal is transmitted through a carrier, and the carrier includes but is not limited to at least one of infrared, electromagnetic waves and ultrasonic waves. For more information, please refer to the following Figures 6 to 8 Related description.

[0074] In some embodiments, the magnetic resonance imaging device includes a wireless clock broadcast module, which is configured to send a wireless clock signal to the electronic device via wireless clock broadcast. For more information, see Figure 3 Related description.

[0075] In some embodiments, the wireless clock signal is used to synchronize only a first clock frequency of the electronic device and a second clock frequency of the magnetic resonance imaging device.

[0076] In some embodiments, there is no need to synchronize the first clock phase of the electronic device with the second clock phase of the magnetic resonance imaging device.

[0077] The first clock frequency refers to the adjusted clock frequency of the electronic device. The clock frequency refers to the number of pulses generated per second.

[0078] The second clock frequency is the clock frequency of the magnetic resonance imaging device. The magnitude of the second clock frequency can be preset in advance.

[0079] In some embodiments, the synchronization of the clock frequencies of the two devices means that the frequencies of the two clocks of the two devices are the same, but the phases are not necessarily the same, which means that the clock periods of the two devices are the same, but there may be a fixed delay in time.

[0080] The first clock phase refers to the clock phase of the electronic device. The clock phase refers to the position of the rising edge and the falling edge of the clock signal. The second clock phase refers to the phase of the clock of the magnetic resonance imaging device.

[0081] In some embodiments, phase synchronization of two devices means that the frequencies and phases of two clocks of the two devices are the same, that is, the rising edges and falling edges of the two clock signals are completely consistent without any time difference.

[0082] In some embodiments, when the magnetic resonance imaging device performs clock synchronization, the first clock frequency of the electronic device and the second clock frequency of the magnetic resonance imaging device are synchronized only through the wireless clock signal, so that the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging device. The wireless clock signal does not include relevant information about the phase, and thus there is no need to synchronize the first clock phase of the electronic device with the second clock phase of the magnetic resonance imaging device.

[0083] In some embodiments of the present specification, by synchronizing only the frequency and not the phase, it is possible to avoid the need for the magnetic resonance imaging device and the electronic device to use complex algorithms to adjust the phase of the electronic device, thereby eliminating the need for a computing device to run the algorithm, greatly reducing the implementation cost, and reducing the size and power consumption of the magnetic resonance imaging device and the electronic device. For example, the size and power consumption of the wireless clock broadcast module in the magnetic resonance imaging device and the signal receiving module in the electronic device can be reduced. For more information about the wireless clock broadcast module, see Figure 3 For more information about the signal receiving module, see Figure 4 Related description.

[0084] In some embodiments, clock synchronization can be achieved by connecting the magnetic resonance imaging device and the electronic device through a cable; screening and / or frequency testing the electronic device; and sending a wireless clock signal to the electronic device through wireless clock broadcasting. In some embodiments, clock synchronization can also be achieved by any two of the above three methods or a combination of the three.

[0085] In some embodiments of the present specification, clock synchronization is achieved by a separate method or a combination of methods, which can reflect the diversity and optionality of clock synchronization. Different clock synchronization methods have their own advantages and disadvantages. For example, by arranging cables inside the magnetic resonance imaging device, it is not necessary to install a signal receiving module on the electronic equipment inside the magnetic resonance imaging device, and the cables will not be exposed, and the effect of clock synchronization can also be achieved. However, with the increase in the number of electronic equipment in the scanning room, the existence of clock cables limits the flexibility of component layout. Therefore, the magnetic resonance imaging device and its external electronic equipment (for example, a patient's monitoring module, a patient's perception module, a high-pressure injection module, a physiological monitoring module, a patient care module, an environmental monitoring module, a mobile controller carried by a caregiver and / or a doctor, a computer, a mobile phone, etc.) can be synchronized by wirelessly broadcasting a wireless clock signal, thereby avoiding the cable layout outside the magnetic resonance imaging device. In some embodiments, in order to avoid the increase in the number of interfaces between the movable scanning bed, control screen, etc. and the magnetic resonance imaging device caused by the use of clock cables, the heavy weight of the cables, the high cost, and other problems, a wireless clock signal is sent to the electronic devices located in the scanning room or entering the scanning room through wireless clock broadcasting. When the electronic device enters the scanning room, the signal receiving module in the electronic device can automatically receive the wireless clock signal broadcast in the space, so as to achieve the effect of signal synchronization with the standard clock. The method is simple and easy to implement. The wireless clock broadcasting can remove heavy cables, simplify the connection interface of the movable parts, and save costs. It can also realize the automatic clock synchronization of electronic products in the scanning room, and support more electronic products to enter the scanning room.

[0086] In some embodiments, there are multiple electronic devices, and sending a wireless clock signal to the electronic devices through wireless clock broadcasting includes: the wireless clock broadcasting sends the wireless clock signal to each of the multiple electronic devices in a one-to-many manner.

[0087] In some embodiments, the number of wireless clock broadcasting modules in the magnetic resonance imaging device is one. One electronic device corresponds to one signal receiving module. Multiple electronic devices correspond to multiple signal receiving modules. One-to-many means that one wireless clock broadcasting module can send wireless clock signals to multiple signal receiving modules.

[0088] "One-way" means that the wireless clock broadcasting module sends a wireless clock signal to multiple signal receiving modules, and the multiple signal receiving modules do not need to provide information feedback (such as frequency or phase feedback, etc.) to the wireless clock broadcasting module.

[0089] In some embodiments of the present specification, through a one-to-many approach, each electronic device entering the scanning room can obtain a wireless clock signal from the wireless clock broadcast, thereby completing clock synchronization. By sending a wireless clock signal to the electronic device in a unidirectional manner, the implementation cost can be further greatly reduced, and the volume and power consumption of the wireless clock broadcast module in the magnetic resonance imaging device and the signal receiving module in the electronic device can be further reduced.

[0090] In some embodiments of the present specification, by adjusting the operating frequency of electronic devices located in and / or entering the scanning room so that the adjusted frequency of the electronic devices is outside the operating frequency range of the magnetic resonance imaging device, interference of the electronic devices to the magnetic resonance imaging device can be avoided.

[0091] Figure 2 is an exemplary schematic diagram of a wired clock synchronization link connection according to some embodiments of the present specification.

[0092] In some embodiments, the magnetic resonance imaging device and the electronic device can be connected via a cable. Figure 2 As shown, the clock signal is output by a standard clock source 222 and transmitted via cables to various modules in the scanning room 200, such as the monitoring module 210 (patient monitoring module), the control screen 230, the scanning bed 240, the power transmission module 221 in the magnet 220, the safety monitoring module 223 and the signal receiving module 224, etc.

[0093] For more information about the power transmission module 221, the monitoring module 210, the scanning bed 240, the safety monitoring module 223, and the signal receiving module 224, please refer to Figure 1 For more information about the standard clock source 222, see Figure 3 and its related description.

[0094] The magnet 220 is a core component for generating a magnetic field in the magnetic resonance imaging device. The control panel 230 refers to a terminal device for controlling the magnetic resonance imaging device.

[0095] Figure 3 is an exemplary schematic diagram of a wireless clock broadcast module according to some embodiments of the present specification.

[0096] In some embodiments, Figure 3 As shown, the magnetic resonance imaging apparatus 300 includes a wireless clock broadcast module 320 . The wireless clock broadcast module 320 includes a standard clock source 222 , a power amplifier 321 and a wireless transmitter 323 .

[0097] The wireless clock broadcast module 320 is a module for sending wireless clock signals. For a description of wireless clock signals, see Figure 1 and its related description.

[0098] In some embodiments, the wireless clock broadcast module 320 is configured to send a wireless clock signal to the electronic device via the wireless clock broadcast 330. For more information about electronic devices and wireless clock broadcast, please refer to Figure 1 and its related description.

[0099] The standard clock source 222 refers to a device for generating a standard clock signal, for example, the standard clock source 222 includes but is not limited to a crystal oscillator, a semiconductor oscillator, an atomic clock, and other clock generating devices.

[0100] In some embodiments, the standard clock source 222 is configured to generate a standard clock, for example, by outputting a standard clock signal through a phase-locked loop, a clock fan-out chip, or the like.

[0101] In some embodiments, the magnetic resonance imaging apparatus 300 further includes an external clock 310. The external clock 310 refers to a clock source outside the magnetic resonance imaging apparatus. For example, the external clock may include but is not limited to a clock generating device, a GPS clock, a network clock, and the like.

[0102] In some embodiments, the standard clock source 222 can be connected to an external clock 310. Since the external clock 310 can provide an accurate time signal, its accuracy is usually higher than most standard clock sources 222. By connecting to the external clock 310, the accuracy of the standard clock source 222 is improved.

[0103] The power amplifier 321 is used to enhance the signal strength of the standard clock source to ensure that the signal has sufficient power to reach the electronic device during the transmission process.

[0104] In some embodiments, the power amplifier 321 is configured to amplify the standard clock and transmit it to the wireless transmitter 323 .

[0105] The wireless transmitter 323 refers to a device for converting a clock signal into a wireless signal (eg, electromagnetic wave, light wave, sound wave, etc.). For example, the wireless transmitter 323 includes but is not limited to an antenna, an LED, a laser transmitter, a piezoelectric ceramic, an ultrasonic transducer, and the like.

[0106] In some embodiments, the wireless transmitter 323 is configured to convert the amplified standard clock into a wireless clock signal.

[0107] In some embodiments, the standard clock source 222 generates a standard clock, which is amplified by the power amplifier 321 and then sent into space by the wireless transmitter 323 to form a wireless clock broadcast 330 .

[0108] In some embodiments, Figure 3As shown, the magnetic resonance imaging apparatus 300 further includes a modulator 322 . The modulator 322 is between the power amplifier 321 and the wireless transmitter 323 .

[0109] The modulator 322 is a device that modulates the amplitude, frequency, phase, etc. of the amplified standard clock signal to obtain better clock performance. The wireless transmitter 323 converts the modulated standard clock into a wireless clock signal.

[0110] In some embodiments of the present specification, the wireless clock broadcast module has the advantages of simple deployment, low cost, low power consumption and small size, and can synchronize the clocks of all electronic devices equipped with wireless clock receiving modules in the scanning room without the need to install a transmission link and a receiving link at each site. This not only simplifies the architecture of the magnetic resonance imaging device, reduces hardware and maintenance costs, but also improves synchronization efficiency and accuracy.

[0111] Figure 4 is an exemplary schematic diagram of a wireless clock receiving module according to some embodiments of this specification.

[0112] In some embodiments, Figure 4 As shown, the electronic device 130 includes a wireless clock receiving module 131, and the wireless clock receiving module 131 includes a wireless receiver 131-1 and a signal amplifier 131-3.

[0113] The wireless clock receiving module 131 refers to a device for receiving a wireless clock signal and converting it into a standard clock signal for use by the electronic device 130 .

[0114] In some embodiments, in response to the wireless clock receiving module 131 receiving the wireless clock broadcast, the wireless clock signal is converted into a standard clock signal through the wireless receiver 131 - 1 , and the standard clock signal is amplified by the signal amplifier 131 - 3 for use by the electronic device 130 .

[0115] The wireless receiver 131-1 refers to a device that converts a wireless clock signal into a standard clock signal such as an electromagnetic wave, an optical wave, or an acoustic wave. For example, the wireless receiver 131-1 may include but is not limited to an antenna, a photoelectric converter, a piezoelectric ceramic, an ultra-wave transducer, and the like.

[0116] In some embodiments, the wireless receiver 131 - 1 is configured to receive a wireless clock signal and perform signal conversion.

[0117] The signal amplifier 131 - 3 is a device for amplifying the received standard clock signal and transmitting it to the electronic device 130 .

[0118] In some embodiments, the signal amplifier 131 - 3 is configured to amplify the converted signal.

[0119] In some embodiments, Figure 4 As shown, the wireless clock receiving module 131 further includes a demodulator 131 - 2 . The demodulator 131 - 2 is between the wireless receiver 131 - 1 and the signal amplifier 131 - 3 .

[0120] The demodulator 131 - 2 refers to a device for demodulating the clock signal modulated by the wireless receiver 131 - 1 in the wireless clock receiving module 131 by amplitude, frequency, phase, etc., and restoring it to a standard clock signal.

[0121] In some embodiments, Figure 4 As shown, the wireless clock receiving module 131 further includes a phase-locked loop 131 - 4 . The phase-locked loop 131 - 4 is between the signal amplifier 131 - 3 and the electronic device 130 .

[0122] The phase-locked loop 131 - 4 is a device for converting a standard clock signal into a clock signal of the same source but different frequency for free use by the electronic device 130 .

[0123] Same source but different frequency refers to two or more signals that have the same phase reference and stability (that is, they originate from the same signal generator or clock source), but have different frequency values.

[0124] In some embodiments of the present specification, the wireless clock receiving module also has the advantages of simple deployment, low cost, low power consumption, and small size. Electronic equipment entering the scanning room only needs to install the wireless clock receiving module to receive the wireless clock signal sent by the wireless clock broadcasting module, thereby realizing wireless clock synchronization and improving the accuracy and efficiency of synchronization.

[0125] Figure 5 FIG. 1 is an exemplary flow chart of wireless clock synchronization according to some embodiments of this specification. Figure 5 As shown, the process 500 includes the following steps. In some embodiments, the process 500 may be performed by a magnetic resonance imaging device.

[0126] Step 510: The wireless clock broadcasting module performs wireless clock broadcasting of a standard clock.

[0127] In some embodiments, a standard clock signal is generated through an external clock and / or a standard clock source, and the wireless clock broadcast module performs wireless clock broadcast of the standard clock, which can ensure that the medium carrying the standard clock signal is propagated inside the magnetic resonance scanning room, so that the standard clock signal can be received in the entire scanning room.

[0128] Step 520: an electronic device with a wireless clock receiving module enters a scanning room.

[0129] In some embodiments, the wireless clock receiving module integrated in the electronic device is in a standby state, ready to receive a signal from the wireless clock broadcasting module.

[0130] Step 530: The wireless clock receiving module receives the wireless broadcast in the space.

[0131] In some embodiments, in response to the wireless clock receiving module capturing the wireless clock broadcast signal propagating in the scanning room, components inside the wireless clock receiving module amplify and frequency-convert the signal to convert it into a signal form suitable for subsequent processing.

[0132] Step 540: The wireless clock receiving module outputs a standard clock.

[0133] In some embodiments, after signal processing, the wireless clock receiving module locks the received signal through a phase-locked loop (PLL) technology to ensure that the frequency of the output signal is the same as the broadcast clock signal. The phase-locked loop adjusts the oscillator inside the wireless clock receiving module to match its frequency with the broadcast standard clock signal, and outputs a stable and accurate standard clock signal, which can be used by the internal clock system of the electronic device.

[0134] Step 550: The electronic device completes clock synchronization of the standard clock.

[0135] In some embodiments, the internal clock system of the electronic device receives the standard clock signal output by the wireless clock receiving module, and the clock synchronization algorithm of the electronic device starts to work and makes necessary adjustments by comparing the internal clock with the received standard clock signal.

[0136] In some embodiments, the adjustment may include changing the frequency of the internal clock or directly replacing the internal clock signal to ensure that the clock of the electronic device is completely synchronized with the clock of the wireless clock broadcast module. Once the synchronization is completed, the electronic device can rely on this precise time reference for various time-sensitive operations, such as data acquisition, processing and storage in magnetic resonance scanning.

[0137] In some embodiments of the present specification, frequency adjustment is achieved by clock synchronization, which can ensure that the electronic equipment in the scanning room operates within a predetermined frequency range. Not only does it avoid conflicts with the Larmor precession frequency of the collected nuclides, but it also ensures that there is only natural background noise in the frequency bandwidth of the collected nuclides in the space, without external noise. That is, the above method not only achieves time synchronization of all electronic equipment in the scanning room, but also effectively eliminates external noise sources that may affect the nuclide signal through frequency planning, thereby ensuring the accuracy and reliability of the scan.

[0138] In some embodiments, by converting wired clock signals into wireless clock signals and broadcasting them in the scanning room, clock synchronization of various electronic devices can be achieved, heavy radio frequency cables can be removed, and the connection interface of movable parts can be simplified, thereby saving costs. At the same time, automatic synchronization of devices in the scanning room can simplify the integration process of smart products.

[0139] In some embodiments, the wireless clock signal is propagated over a carrier.

[0140] The carrier refers to a physical medium or wave type used to propagate the wireless clock signal. In some embodiments, the carrier includes but is not limited to at least one of infrared, electromagnetic wave and ultrasonic wave.

[0141] Infrared refers to electromagnetic waves with a wavelength between microwaves and visible light. In some embodiments, the wireless clock signal can be transmitted by infrared.

[0142] In some embodiments, the carrier may also include light of other wavelengths, such as visible light.

[0143] Figure 6 is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to some embodiments of the present specification.

[0144] In some embodiments, Figure 6 As shown, the standard clock is sent by the standard clock source 222 to the wireless clock broadcast module 320, and the standard clock signal is generated by the components inside the wireless clock broadcast module 320. After being amplified by the power amplifier, it is input into the laser generator, and an infrared light signal carrying the standard clock signal is output, which is broadcast in the magnetic resonance scanning room 600. The magnetic resonance signal receivers 610-1, 610-2, etc. placed inside the bed board of the scanning bed 240 and the patient monitoring module 210 placed on the wall receive the infrared light signal broadcast in the magnetic resonance scanning room 600 through the photoelectric converter inside the wireless clock receiving module, convert it into a clock signal, and output it to the magnetic resonance signal receivers 610-1, 610-2, etc. and the monitoring module 210 for use after passing through the signal amplifier.

[0145] For more information about monitoring modules and scanning rooms, see Figure 1 For more information about the standard clock source, magnet, signal receiving module, safety monitoring module, and power transmission module, please refer to Figure 2 For more information about the wireless clock broadcast module, see Figure 3 For more information about wireless clock receiving modules, signal amplifiers, etc., see Figure 4 and its related description.

[0146] A magnetic resonance signal receiver is a device used to receive radio frequency signals generated by hydrogen nuclei (or other nuclides) in a sample or patient after radio frequency pulse excitation. For example, a magnetic resonance signal receiver may include but is not limited to a receiving coil, a signal processor, and the like.

[0147] In some embodiments, through the aforementioned method, the magnetic resonance signal receiver of the scanning bed 240 (for example, the magnetic resonance signal receiver 610-1, the magnetic resonance signal receiver 610-2) and the patient's monitoring module 210 achieve automatic clock synchronization, simplifying the cables from the side of the magnet 220 to the patient's monitoring module 210 on the wall, and the cables from the inside of the scanning bed 240 to the magnetic resonance signal receivers (for example, the magnetic resonance signal receiver 610-1, the magnetic resonance signal receiver 610-2) inside the bed board, thereby reducing the cost of the cables themselves, the deployment and design costs of the cables, and the potential personal / equipment safety hazards such as leakage and tripping.

[0148] Electromagnetic waves are wave phenomena that are caused by electric fields and magnetic fields being perpendicular to each other and exciting each other, and propagating in space in the form of waves. In some embodiments, the wireless clock signal can also be propagated in the form of electromagnetic waves.

[0149] Figure 7 It is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to other embodiments of the present specification.

[0150] In some embodiments, Figure 7 As shown, the wireless clock broadcast module 320 has a built-in oven-controlled crystal oscillator as a standard clock source, and the standard clock signal is transmitted through a cable into the signal receiving module 224, the safety monitoring module 223, and the power transmitting module 221 on the side of the magnet 220.

[0151] In some embodiments, after power amplification, the standard clock signal enters the modulator inside the wireless clock broadcast module 320, and through amplitude modulation, a clock signal with electromagnetic waves (for example, radio with a frequency band of 5.8 GHz, etc.) as a carrier is obtained, which is sent to the antenna and broadcast in the scanning room 700.

[0152] In some embodiments, the signal receiving module 224 is located in the magnetic resonance signal receiver 730 inside the wireless coil, the patient monitoring module 210 on the wall, the scanning bed controller 720 at the bottom of the mobile scanning bed 740, and the mobile controller 710 in the hand of the operator 750 that is not directly connected to the magnetic resonance imaging device.

[0153] In some embodiments, the signal receiving module 224 detects the clock signal with electromagnetic waves (for example, at a frequency of 5.8 GHz) as a carrier broadcast in the scanning room 700 through the antenna, performs amplitude demodulation through a demodulator, converts it back into a clock signal, passes through a signal amplifier, enters a phase-locked loop, and outputs a clock signal of the same source but different frequency required by each electronic device.

[0154] For more information about the signal receiving module, security monitoring module, scanning room, and mobile controller, please refer to Figure 1 For more information about the power transmitter module and standard clock source, see Figure 2 For more information about the wireless clock broadcast module, see Figure 3 For more information about demodulators and signal amplifiers, see Figure 4 and its related description.

[0155] The bed controller 720 refers to a device for controlling the movement of the mobile bed. For example, the bed controller 720 may include but is not limited to a control template, a motor driver, and the like.

[0156] In some embodiments, the aforementioned method can simplify the cable from the magnet 220 side to the patient monitoring module 210 on the wall, thereby reducing the cost of the cable itself, the deployment and design cost of the cable, and the potential safety hazards to life / equipment such as leakage and tripping.

[0157] In some embodiments, by reducing the clock interface between the mobile scanning bed 740 and the magnet 220, the complexity of the connection interface between the mobile scanning bed 740 and the magnet 220 can be reduced, thereby reducing the design and deployment costs brought about by the stable connection between the mobile scanning bed 740 and the magnet 220. In addition, the safety hazards of personal / equipment such as leakage and mechanical damage are also reduced.

[0158] In some embodiments, the above method can also achieve automatic synchronization between the magnetic resonance signal receiver 730 located inside the wireless coil and the mobile controller 710 in the hands of the operator 750 and the clock of the magnetic resonance imaging device. In addition, since the components in the magnetic resonance imaging device avoid the limitation of cable connection, the operator is allowed to use the electronic equipment and the mobile controller more freely, further improving the quality of the scanned image.

[0159] Ultrasonic waves refer to sound waves with frequencies higher than the upper limit of human hearing (about 20 kHz). In some embodiments, the wireless clock signal can also be transmitted by ultrasonic waves.

[0160] Figure 8 It is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to other embodiments of the present specification.

[0161] In some embodiments, Figure 8 As shown, the wireless clock broadcast module 320 has a built-in cesium atomic clock as a standard clock source, and the standard clock signal is transmitted through a cable into the signal receiving module 224, the safety monitoring module 223, and the power transmitting module 221 on the side of the magnet 220.

[0162] In some embodiments, after power amplification, the standard clock signal enters the ultrasonic transducer inside the wireless clock broadcast module 320 to generate ultrasonic waves carrying the standard clock signal, which are broadcast in the magnetic resonance scanning room 800.

[0163] In some embodiments, the signal receiving module 224 is located in the magnetic resonance signal receiver 730 inside the wireless coil, the patient monitoring module 210 on the wall, the scanning bed controller 720 at the bottom of the mobile scanning bed 740, the patient sensing module 810 at the ceiling, the environmental monitoring module 840 on the opposite wall, and the high-pressure injection module 820 for patient care, the physiological monitoring module 850, the patient care robot 830, etc. that are not related to the system.

[0164] In some embodiments, the signal receiving module 224 detects the ultrasound wave carrying the standard clock signal in the scanning room 800 through the ultrasonic transducer, converts it back into a clock signal, passes through a signal amplifier, enters a phase-locked loop, and outputs a clock signal of the same source but different frequency required by the electronic device for use.

[0165] For more information about the signal receiving module, security monitoring module, scanning room, and mobile controller, please refer to Figure 1 For more information about the power transmitter module and standard clock source, see Figure 2 For more information about the wireless clock broadcast module, see Figure 3 For more information about signal amplifiers, see Figure 4 and its related description.

[0166] In some embodiments, the aforementioned method can simplify the cables from the magnet 220 to the patient monitoring module 210 on the wall, the patient sensing module 810 on the ceiling, and the environmental monitoring module 840 on the wall, thereby reducing the cost of the cables themselves, the deployment and design costs of the cables, and the potential safety hazards to people / equipment such as leakage and tripping, allowing more smart devices to enter the scanning room.

[0167] In some embodiments, by reducing the clock interface between the mobile scanning bed 740 and the magnet 220 side, the complexity of the connection interface between the mobile scanning bed 740 and the magnet 220 side is reduced, and the design and deployment costs brought about by the stable connection between the mobile scanning bed 740 and the magnet 220 side, as well as the potential safety hazards to personal / equipment such as leakage and mechanical damage, are further reduced.

[0168] In some embodiments, through the aforementioned method, automatic synchronization of the magnetic resonance signal receiver 730, the high-pressure injection module 820, the physiological monitoring module 850, and the patient care robot 830 inside the wireless coil with the standard clock is also achieved, allowing more intelligent devices for patient monitoring and care to enter the scanning room 800.

[0169] In some embodiments, since the various components in the magnetic resonance imaging device avoid the limitation of cableless connection, the influence of frequency interference on the magnetic resonance image can be avoided, which is convenient for medical staff to use and also helps to treat patients, allowing patients with various physical conditions to enter the scanning room 800 for safe and effective image scanning.

[0170] In some embodiments of this specification, the wireless clock synchronization method can be used in different environments and usage scenarios through multiple carriers, which makes it universal. In addition, it can also reduce deployment costs and avoid potential personal / equipment safety hazards such as leakage and mechanical damage. It should be understood that Figure 6-8 This is only an example and does not limit the specific electronic device and the specific carrier.

[0171] Some embodiments of the present specification provide a magnetic resonance imaging device, which is configured to adjust the operating frequency of electronic equipment located in and / or entering the scanning room, wherein the adjusted frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes synchronizing the clocks of the magnetic resonance imaging device and the electronic equipment.

[0172] In some embodiments, the magnetic resonance imaging apparatus includes at least one of a processor, a storage device, and the like.

[0173] The processor may process information and / or data related to the magnetic resonance imaging device to perform one or more functions described in the present embodiment. In some embodiments, the processor may include one or more processing engines (e.g., a single-chip processing engine or a multi-chip processing engine). By way of example only, the processor may include a central processing unit (CPU), an application specific integrated circuit (ASIC), etc., or any combination thereof.

[0174] A storage device refers to a device for storing data, instructions and / or any other information. In some embodiments, a storage device may include one or more storage components, each of which may be an independent device or part of another device. In some embodiments, a storage device may include a random access memory (RAM), a read-only memory (ROM), etc. or any combination thereof. In some embodiments, a storage device may be implemented on a cloud platform.

[0175] The beneficial effects that may be brought about by the embodiments of this specification include but are not limited to: (1) By adjusting the frequency of electronic devices in a clock synchronization manner, a variety of electronic devices can enter the scanning room without affecting the image quality and diagnostic results of the magnetic resonance scanning, providing intelligent and diversified functions for magnetic resonance scanning. (2) Through the above method, complex algorithms and cumbersome adjustment processes can be abandoned, that is, there is no need to equip dedicated computing equipment to run the algorithm. Not only does it greatly reduce costs, but it also significantly reduces the volume and power consumption of the wireless clock broadcast module and the wireless clock receiving module, thereby improving the cost-effectiveness and energy efficiency of the magnetic resonance imaging device. (3) The highly automated characteristics make it unnecessary for electronic devices to perform any configuration, communication or calculation operations when entering the scanning room. Electronic devices only need to be placed in the scanning room to automatically complete synchronization with the standard clock, which greatly simplifies the operation process and improves the synchronization efficiency. (4) Only one wireless clock broadcast module is required to achieve clock synchronization of all devices equipped with wireless clock receiving modules in the scanning room, eliminating the need to install transmission and receiving links at each site, thereby reducing the complexity and cost of the system.

[0176] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification.

[0177] At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined.

[0178] In addition, unless explicitly stated in the claims, the order of the processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not intended to limit the order of the processes and methods of this specification. Although the above disclosure discusses some invention embodiments that are currently considered useful through various examples, it should be understood that such details are only for illustrative purposes, and the attached claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this specification. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0179] Similarly, it should be noted that in order to simplify the description disclosed in this specification and thus help understand one or more embodiments of the invention, in the above description of the embodiments of this specification, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the subject matter of this specification are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.

[0180] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of this specification are approximate values, in specific embodiments, the setting of such numerical values ​​is as accurate as possible within the feasible range.

[0181] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, etc., cited in this specification are hereby incorporated by reference in their entirety. Except for application history documents that are inconsistent with or conflicting with the contents of this specification, documents that limit the broadest scope of the claims of this specification (currently or later attached to this specification) are also excluded. It should be noted that if the descriptions, definitions, and / or use of terms in the materials attached to this specification are inconsistent or conflicting with the contents described in this specification, the descriptions, definitions, and / or use of terms in this specification shall prevail.

[0182] Finally, it should be understood that the embodiments described in this specification are only used to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, as an example and not a limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly introduced and described in this specification.

Claims

1. A magnetic resonance imaging method, characterized in that: The method is performed by a magnetic resonance imaging device, and comprises: Adjusting the operating frequency of electronic equipment located in and / or entering the scanning room, wherein the adjusted frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes synchronizing the clocks of the magnetic resonance imaging device and the electronic equipment.

2. The method according to claim 1, characterized in that The method of performing clock synchronization between the magnetic resonance imaging device and the electronic device includes at least one of the following: Connecting the magnetic resonance imaging device and the electronic device via a cable; performing screening and / or frequency testing on said electronic equipment; A wireless clock signal is sent to the electronic device through wireless clock broadcasting.

3. The method according to claim 2, characterized in that The number of the electronic devices is multiple, and sending the wireless clock signal to the electronic devices through wireless clock broadcasting includes: The wireless clock broadcast sends the wireless clock signal to each of the plurality of electronic devices in a one-to-many manner.

4. The method according to claim 2, characterized in that The wireless clock signal is used to synchronize a first clock frequency of the electronic device with a second clock frequency of the magnetic resonance imaging device.

5. The method according to claim 2, characterized in that The wireless clock signal is used to asynchronously synchronize a first clock phase of the electronic device with a second clock phase of the magnetic resonance imaging device.

6. The method according to claim 2, characterized in that The wireless clock signal is transmitted through a carrier, and the carrier includes at least one of infrared, electromagnetic waves and ultrasonic waves.

7. A magnetic resonance imaging device, characterized in that: The magnetic resonance imaging apparatus is configured as follows: Adjusting the operating frequency of electronic equipment located in and / or entering the scanning room, wherein the adjusted frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes synchronizing the clocks of the magnetic resonance imaging device and the electronic equipment.

8. The magnetic resonance imaging apparatus according to claim 7, characterized in that The magnetic resonance imaging device comprises a wireless clock broadcast module, and the wireless clock broadcast module is configured to send a wireless clock signal to the electronic device through wireless clock broadcast; The wireless clock broadcast module includes a standard clock source, a power amplifier and a wireless transmitter; The standard clock source is configured to generate a standard clock; the power amplifier is configured to amplify the standard clock and transmit it to the wireless transmitter; and the wireless transmitter is configured to convert the amplified standard clock into the wireless clock signal.

9. The magnetic resonance imaging apparatus according to claim 8, characterized in that The electronic device comprises a wireless clock receiving module, and the wireless clock receiving module comprises a wireless receiver and a signal amplifier; The wireless receiver is configured to receive the wireless clock signal and perform signal conversion; The signal amplifier is configured to amplify the converted signal.

10. The magnetic resonance imaging apparatus according to claim 7, characterized in that: The electronic device includes a first device related to magnetic resonance scanning, wherein the first device includes at least one of a wireless coil, a scanning bed, a power transmission module, a signal receiving module, and a safety monitoring module; or The electronic device includes a second device unrelated to magnetic resonance scanning, and the second device includes a patient monitoring module, a patient sensing module, a high-pressure injection module, a physiological monitoring module, a patient care module, an environmental monitoring module, and at least one of a mobile controller, a computer, and a mobile phone carried by a caregiver and / or a doctor.

Images