A magnetic resonance imaging method and a magnetic resonance imaging apparatus

Abstract

This specification provides a magnetic resonance imaging method and a magnetic resonance imaging apparatus. The method is performed by the magnetic resonance imaging apparatus and includes: adjusting the operating frequency of an electronic device located in and / or entering the scanning chamber, wherein the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging apparatus; wherein the adjustment includes synchronizing the magnetic resonance imaging apparatus and the electronic device with a clock.

Description

Technical Field

[0001] This specification relates to the field of magnetic resonance technology, and in particular to a magnetic resonance imaging method and a magnetic resonance imaging device. Background Technology

[0002] To ensure image clarity, magnetic resonance imaging (MRI) is extremely sensitive to noise within its frequency bandwidth. With the rapid development of medical technology and biomedical engineering, more and more electronic devices are being incorporated into MRI scanning rooms to support more complex and precise diagnostic and treatment processes. However, these electronic devices generate specific electromagnetic waves during operation, the frequency range of which may overlap with the operating frequency of the MRI device. Because the working principle of MRI devices relies on precisely controlled radio frequency pulses and magnetic field gradients, any external electromagnetic interference can lead to degraded image quality, reduced signal-to-noise ratio, or even data acquisition errors, severely impacting the final diagnostic results.

[0003] Therefore, it is desirable to provide a magnetic resonance imaging method and a magnetic resonance imaging apparatus that can ensure that electronic devices can operate normally within the scanning chamber of magnetic resonance imaging without negatively impacting the performance of the magnetic resonance imaging apparatus. Summary of the Invention

[0004] This specification provides one or more embodiments of a magnetic resonance imaging method, the method being performed by a magnetic resonance imaging device, the method comprising: adjusting the operating frequency of an electronic device located within and / or entering the scanning chamber, wherein the adjusted frequency of the electronic device is outside the operating frequency range of the magnetic resonance imaging device; wherein the adjustment includes clock synchronization between the magnetic resonance imaging device and the electronic device.

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

[0006] In some embodiments, the number of electronic devices is multiple, and the step of sending a wireless clock signal to the electronic devices via wireless clock broadcasting includes: the wireless clock broadcasting sends the wireless clock signal unidirectionally to each of the multiple electronic devices in a one-to-many 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 the first clock phase of the electronic device with the second clock phase of the magnetic resonance imaging device.

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

[0010] This specification provides one or more embodiments of a magnetic resonance imaging (MRI) apparatus configured to: adjust the operating frequency of an electronic device located within and / or entering the scanning chamber, wherein the adjusted frequency of the electronic device is outside the operating frequency range of the MRI apparatus; wherein the adjustment includes clock synchronization between the MRI apparatus and the electronic device.

[0011] In some embodiments, the magnetic resonance imaging apparatus includes a wireless clock broadcast module configured to transmit a wireless clock signal to the electronic device via 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; 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 associated with magnetic resonance scanning, the first device including at least one of a wireless coil, a scanning bed, a power transmission module, a signal receiving module, and a security monitoring module.

[0014] In some embodiments, the electronic device includes a second device independent of magnetic resonance scanning, the second device including 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 doctor, a computer, and a mobile phone. Attached Figure Description

[0015] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0016] Figure 1 These are exemplary schematic diagrams of magnetic resonance imaging methods according to some embodiments of this specification;

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

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

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

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

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

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

[0023] Figure 8 This is an exemplary schematic diagram of a wireless clock broadcast synchronization link according to other embodiments of this specification. Detailed Implementation

[0024] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0025] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one way to distinguish different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0026] Unless the context clearly indicates an exception, words such as "a," "an," "a kind," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

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

[0028] Magnetic resonance imaging (MRI) technology uses high-intensity magnetic fields and radio frequency pulses to acquire images of the internal structures of the human body. In MRI, nuclides exhibit specific Larmor precession frequencies under a particular magnetic field. Signals are acquired through modulation by a gradient magnetic field and radio frequency signals, with the acquired signals distributed within a specific frequency bandwidth. To maintain image quality, MRI is sensitive to noise within this bandwidth; therefore, electronic equipment is typically restricted from entering the MRI scanning chamber to eliminate external interference.

[0029] Therefore, the embodiments in this specification provide a magnetic resonance imaging method and system that adjusts the operating frequency of electronic devices located within and / or entering the scanning chamber so that the adjusted frequency of the electronic devices is outside the operating frequency range of the magnetic resonance imaging device. This ensures that the electronic devices can operate normally within the scanning chamber of the magnetic resonance imaging system without negatively impacting the performance of the magnetic resonance imaging device. Furthermore, by adjusting the operating frequency of the electronic devices through clock synchronization between the magnetic resonance imaging device and the electronic devices, more efficient and reliable frequency adjustment can be achieved.

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

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

[0032] The operating frequency range of a magnetic resonance imaging device refers to the frequency range in which the acquired signals are distributed during the imaging process using magnetic resonance imaging technology, when signals are acquired through gradient magnetic fields and radio frequency signal modulation.

[0033] The scanning room refers to the space where the magnetic resonance imaging (MRI) device is located. The scanning room shields and isolates the MRI device from the outside environment to ensure the accuracy of the MRI results.

[0034] Electronic equipment refers to any device composed of electronic components.

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

[0036] The first device refers to a device that participates in or supports the magnetic resonance imaging 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. The coil is used to receive radio frequency signals. The magnetic resonance signal receiver is used to convert the radio frequency signals into digital signals and transmit them wirelessly.

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

[0039] A scanning bed is a bed in a magnetic resonance imaging (MRI) apparatus used to place a patient for scanning. In some embodiments, the scanning bed is equipped with an electronic controller to control its movement during the MRI scan.

[0040] A power transmission module is a module used to regulate and transmit radio frequency signals.

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

[0042] A signal receiving module is a module used to receive radio frequency signals released from excited hydrogen nuclei within a patient's body.

[0043] In some embodiments, the magnetic resonance imaging apparatus, through a signal receiving module, is capable of receiving, amplifying, preprocessing, digitizing, and transmitting radio frequency signals to ensure high-quality image generation.

[0044] A safety monitoring module is a module used to monitor and manage relevant parameters (e.g., magnetic field strength, radio frequency radiation levels, etc.) during magnetic resonance imaging (MRI) scanning in real time. 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 this specification, interference may occur because the operating frequency of the electronic device may overlap or conflict with the operating frequency of the magnetic resonance imaging device. Therefore, by synchronizing the clock of the first device associated with the magnetic resonance scan with the magnetic resonance imaging device, frequency interference between the magnetic resonance imaging device and the first device during the magnetic resonance scan can be avoided, thereby improving image quality and signal-to-noise ratio and increasing the accuracy of diagnostic results.

[0047] In some embodiments, the electronic device includes a second device independent of the magnetic resonance scan.

[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 the following: 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 doctor, a computer, a mobile phone, etc.

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

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

[0051] The patient sensing module refers to a module used to sense various physiological states of the patient in real time during the scanning process. For example, the patient sensing module includes pressure pads, etc.

[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 abnormalities during the scanning process, such as patient movement or discomfort, thereby taking measures to prevent potential risks.

[0053] A high-pressure injection module is a module used to inject contrast agents into a patient's body during contrast-enhanced scanning. For example, a high-pressure injection module includes a syringe and an infusion pump.

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

[0055] A physiological monitoring module refers to a module used to monitor a patient's physiological data. Physiological monitoring can include at least one of various monitoring methods, such as 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 blood pressure monitor, and a body temperature monitor.

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

[0057] The patient care module refers to a module designed to assist patients during magnetic resonance imaging (MRI) examinations by providing a comfortable environment. For example, a patient care module may include temperature control devices and lighting adjustment devices.

[0058] In some embodiments, the magnetic resonance imaging device, through a patient care module, can provide physiological monitoring, psychological support, physical support, and handle corresponding emergencies for the patient, helping operators to promptly identify and address potential emergencies and ensure the smooth progress of the scanning process.

[0059] An environmental monitoring module is a module used to monitor and manage various indoor environmental parameters in real time. For example, an environmental monitoring module includes temperature sensors, humidity sensors, and magnetic field strength meters.

[0060] In some embodiments, the magnetic resonance imaging device, through an environmental monitoring module, can monitor and manage environmental parameters inside the scanning chamber in real time, which helps operators to promptly identify and address potential environmental problems and ensure the smooth progress of the scanning process.

[0061] A mobile controller is a device used to remotely control a magnetic resonance imaging (MRI) device or to interact with a patient. Examples of mobile controllers include handheld terminals and walkie-talkies.

[0062] In some embodiments, the magnetic resonance imaging device, through a mobile controller, can improve scanning efficiency and patient safety, while optimizing workflow, reducing errors, enhancing aseptic operation capabilities, and allowing operators to multitask.

[0063] In some embodiments of this specification, by using a second device independent of the magnetic resonance imaging (MRI) scan, it is possible to better monitor the patient's vital signs and physiological indicators, ensuring patient safety and improving patient comfort. By synchronizing the second device with the MRI scanner's clock, frequency interference between the MRI scanner and the second device during the MRI scan can be avoided. This not only improves image quality and signal-to-noise ratio, and enhances the accuracy of diagnostic results, but also assists in the monitoring, sensing, and care of the patient or environment during the MRI scan process.

[0064] In some embodiments, the electronic device includes a wireless clock receiving module, which includes a wireless receiver and a signal amplifier. For more details, please refer to [link to relevant documentation]. Figure 4 Related descriptions.

[0065] The operating frequency of an electronic device refers to the frequency at which the device emits or receives electromagnetic waves during 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 (MRI) apparatus can adjust the operating frequency of electronic devices located within and / or entering the scanning chamber in various ways to ensure that the operating frequency of the electronic devices is outside the operating frequency range of the MRI apparatus, thereby preventing interference from the electronic devices. In some embodiments, the MRI apparatus can synchronize the clocks of the MRI apparatus and the electronic devices.

[0067] Clock synchronization refers to synchronizing the magnetic resonance imaging (MRI) device and at least one electronic device with the same source clock. In the standard operating procedure of an MRI device, clock synchronization must be achieved within the scanning chamber; that is, all electronic devices must share the same master clock signal source (standard clock source). Through precise frequency planning, ensuring that the operating frequencies of the electronic devices are outside the operating frequency range of the MRI device effectively suppresses noise within the bandwidth.

[0068] In some embodiments, clock synchronization between a magnetic resonance imaging device and an 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; or transmitting a wireless clock signal to the electronic device via wireless clock broadcasting.

[0069] For more information on connecting MRI machines and electronic devices via cables, please see [link to relevant documentation]. Figure 2 Related descriptions.

[0070] In some embodiments, electronic devices located within and / or entering the scanning chamber can be screened and / or frequency-tested in real time to determine whether their operating frequencies are within the operating frequency range of the magnetic resonance imaging (MRI) device. For example, if the operating frequency range of the MRI device is known, the operating frequency of electronic devices within the scanning chamber is tested. If the operating frequency of the electronic devices within the scanning chamber is within the operating frequency range of the MRI device, the operating frequency of the electronic devices can be adjusted so that the adjusted frequency is outside the operating frequency range of the MRI device. As another example, if the operating frequency range of the MRI device is known, the operating frequency of electronic devices about to enter the scanning chamber is tested, and only electronic devices whose operating frequencies are outside the operating frequency range of the MRI device are allowed to enter the scanning chamber. Yet another example, if the operating frequency of an electronic device about to enter the scanning chamber is within the operating frequency range of the MRI device, the operating frequency of the electronic device is first adjusted so that its operating frequency is outside the operating frequency range of the MRI device before it enters the scanning chamber.

[0071] Wireless clock broadcasting refers to sending signals to electronic devices via wireless broadcasting. Wireless clock broadcasting uses media such as electromagnetic waves, light waves, and sound waves carrying standard clock signals to propagate within the space of the magnetic resonance scanning room.

[0072] In some embodiments, via wireless clock broadcasting, the aforementioned electronic device can wirelessly synchronize its internal clock with a standard clock source upon receiving a wireless clock signal, thereby ensuring clock synchronization between the magnetic resonance imaging device and the electronic device. For more information on wireless clock synchronization, please refer to [link to relevant documentation]. Figure 5 Related descriptions.

[0073] A wireless clock signal refers to a signal transmitted wirelessly by a magnetic resonance imaging (MRI) device. In some embodiments, the wireless clock signal is propagated via a carrier, which includes, but is not limited to, at least one of infrared, electromagnetic waves, and ultrasonic waves. Further details can be found below. Figures 6 to 8 Related descriptions.

[0074] In some embodiments, the magnetic resonance imaging apparatus includes a wireless clock broadcast module, which is configured to transmit a wireless clock signal to an electronic device via wireless clock broadcast. For more details, please refer to [link to relevant documentation]. Figure 3 Related descriptions.

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

[0076] In some embodiments, it is not necessary 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 an electronic device. 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, clock frequency synchronization between two devices means that the frequencies of the two clocks of the two devices are the same, but their phases are not necessarily the same. This means that the clock periods of the two devices are the same, but there may be a fixed time delay.

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

[0081] In some embodiments, phase synchronization of two devices means that the frequencies and phases of the two clocks of the two devices are the same, that is, the rising and falling edges of the two clock signals are completely consistent, with no time difference.

[0082] In some embodiments, when the magnetic resonance imaging (MRI) device performs clock synchronization, it synchronizes the first clock frequency of the electronic device with the second clock frequency of the MRI device only via a wireless clock signal, so that the adjusted frequency of the electronic device is outside the operating frequency range of the MRI device. The wireless clock signal does not include phase-related information, thus eliminating the need for synchronization processing between the first clock phase of the electronic device and the second clock phase of the MRI device.

[0083] In some embodiments of this specification, by synchronizing only the frequency and not the phase, the complex algorithms required for adjusting the phase of the magnetic resonance imaging (MRI) device and electronic equipment can be avoided. Therefore, the computational equipment needed to run the algorithm is eliminated, significantly reducing implementation costs and decreasing the size and power consumption of the MRI device and electronic equipment. For example, this reduces the size and power consumption of the wireless clock broadcast module in the MRI device and the signal receiving module in the electronic equipment. Further details regarding the wireless clock broadcast module can be found in [reference needed]. Figure 3 The relevant description is provided. For more information about the signal receiving module, please refer to [link / reference]. Figure 4 Related descriptions.

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

[0085] In some embodiments of this specification, clock synchronization is achieved through individual or combined methods, demonstrating the diversity and selectivity of clock synchronization implementation. Different clock synchronization methods have their own advantages and disadvantages. For example, by arranging cables inside the MRI machine, the signal receiving module can be removed from the internal electronic equipment, and the cables are not exposed, while still achieving clock synchronization. However, as the number of electronic devices in the scanning room increases, the presence of clock cables limits the flexibility of component layout. Therefore, clock synchronization can be achieved between the MRI machine and its external electronic equipment (e.g., patient monitoring modules, patient sensing modules, high-pressure injection modules, physiological monitoring modules, patient care modules, environmental monitoring modules, mobile controllers carried by caregivers and / or doctors, computers, mobile phones, etc.) by wirelessly broadcasting a wireless clock signal, thereby avoiding the need for external cable layouts. In some embodiments, to avoid the problems of increased interface numbers between the movable scanning bed, control panel, and magnetic resonance imaging device, as well as the resulting weight and cost of cables, caused by the use of clock cables, a wireless clock broadcast is used to send a wireless clock signal to electronic devices located in or entering the scanning room. When an electronic device enters the scanning room, its internal signal receiving module automatically receives the broadcast wireless clock signal, achieving synchronization with a standard clock signal. This method is simple and easy to implement. Wireless clock broadcasting eliminates heavy cables, simplifies the connection interfaces of movable parts, and saves costs. It also enables automatic clock synchronization of electronic products within the scanning room, supporting the entry of more electronic products into the scanning room.

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

[0087] In some embodiments, the number of wireless clock broadcast modules in the magnetic resonance imaging apparatus 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 broadcast module can send wireless clock signals to multiple signal receiving modules.

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

[0089] In some embodiments of this specification, each electronic device entering the scanning chamber can obtain a wireless clock signal from the wireless clock broadcast, thereby achieving clock synchronization, through a one-to-many approach. By unidirectionally sending wireless clock signals to electronic devices, the implementation cost can be significantly reduced, further minimizing 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 devices.

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

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

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

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

[0094] Magnet 220 is the core component in a magnetic resonance imaging (MRI) device that generates a magnetic field. Control panel 230 refers to the terminal equipment used to control the MRI device.

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

[0096] In some embodiments, such as Figure 3 As shown, the magnetic resonance imaging device 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 refers to a module used to transmit wireless clock signals. For details on wireless clock signals, please refer to [link to documentation / reference]. Figure 1 And its related descriptions.

[0098] In some embodiments, the wireless clock broadcast module 320 is configured to transmit a wireless clock signal to an electronic device via wireless clock broadcast 330. For more information about electronic devices and wireless clock broadcasting, please refer to [link to relevant documentation]. Figure 1 And its related descriptions.

[0099] A standard clock source 222 refers to a device used to generate a standard clock signal. For example, a standard clock source 222 includes, but is not limited to, clock generating devices such as crystal oscillators, semiconductor oscillators, and atomic clocks.

[0100] In some embodiments, the standard clock source 222 is configured to generate a standard clock. For example, a standard clock signal is output through devices such as a phase-locked loop, a clock fan-out chip, etc.

[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 other than 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, etc.

[0102] In some embodiments, the standard clock source 222 can be connected to an external clock 310. Since the external clock 310 can provide a precise time signal, its accuracy is typically higher than that of most standard clock sources 222. Connecting an external clock 310 helps improve the accuracy of the standard clock source 222.

[0103] Power amplifier 321 refers to a power amplifier used to enhance the signal strength of a standard clock source, ensuring that the signal has sufficient power to reach electronic devices during transmission.

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

[0105] A wireless transmitter 323 refers to a device used to convert clock signals into wireless signals (e.g., electromagnetic waves, light waves, sound waves, etc.). For example, a wireless transmitter 323 includes, but is not limited to, antennas, LEDs, laser transmitters, piezoelectric ceramics, ultrasonic transducers, etc.

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

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

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

[0109] Modulator 322 refers to a device that modulates the amplified standard clock signal in terms of amplitude, frequency, and phase to obtain better clock performance. Wireless transmitter 323 converts the modulated standard clock into a wireless clock signal.

[0110] In some embodiments of this specification, the wireless clock broadcast module has advantages such as simple deployment, low cost, low power consumption, and small size. It can synchronize the clocks of all electronic devices equipped with wireless clock receiver modules in the scanning room, eliminating the need for transmission and reception links at each site. This not only simplifies the architecture of the magnetic resonance imaging device and reduces hardware and maintenance costs, but also improves synchronization efficiency and accuracy.

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

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

[0113] The wireless clock receiver module 131 refers to a device used to receive wireless clock signals and convert them into standard clock signals for use by electronic device 130.

[0114] In some embodiments, in response to the wireless clock receiving module 131 receiving a wireless clock broadcast, the wireless clock signal is converted into a standard clock signal by 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] Wireless receiver 131-1 refers to a device that converts a wireless clock signal into a standard clock signal such as electromagnetic waves, light waves, or sound waves. For example, wireless receiver 131-1 may include, but is not limited to, antennas, photoelectric converters, piezoelectric ceramics, and superconducting transducers.

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

[0117] Signal amplifier 131-3 refers to a device that amplifies the received standard clock signal and transmits it to electronic device 130.

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

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

[0120] Demodulator 131-2 refers to a device used to demodulate the clock signal modulated by wireless receiver 131-1 in wireless clock receiver module 131 and restore it to a standard clock signal by demodulating the amplitude, frequency, phase, etc.

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

[0122] Phase-locked loop 131-4 refers to a device used to convert a standard clock signal into a clock signal of the same origin but different frequency, for free use by electronic device 130.

[0123] "Same source but different frequency" means that two or more signals have the same phase reference and stability (i.e., they originate from the same signal generator or clock source), but their frequency values ​​are different.

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

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

[0126] Step 510: The wireless clock broadcasting module broadcasts the standard clock wirelessly.

[0127] In some embodiments, a standard clock signal is generated by an external clock and / or a standard clock source, and the wireless clock broadcasting module broadcasts the standard clock wirelessly. This ensures that the medium carrying the standard clock signal propagates inside the magnetic resonance scanning room, so that the standard clock signal can be received throughout the entire scanning room.

[0128] Step 520: An electronic device with a wireless clock receiver module enters the scanning room.

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

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

[0131] In some embodiments, in response to the wireless clock receiving module capturing a wireless clock broadcast signal propagating within the scanning room, components inside the wireless clock receiving module amplify, frequency convert, or otherwise process 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 using phase-locked loop (PLL) technology to ensure that the frequency of the output signal is consistent with the broadcast clock signal. The PLL adjusts the oscillator inside the wireless clock receiving module to match its frequency with the broadcast standard clock signal, outputting a stable and accurate standard clock signal that can be used by the internal clock system of the electronic device.

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

[0135] In some embodiments, when the internal clock system of an electronic device receives a standard clock signal output by a wireless clock receiving module, the clock synchronization algorithm of the electronic device starts working 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 fully synchronized with the clock of the wireless clock broadcast module. Once synchronization is complete, the electronic device can rely on this precise time reference to perform various time-sensitive operations, such as data acquisition, processing, and storage in magnetic resonance imaging (MRI) scans.

[0137] In some embodiments of this specification, frequency adjustment is achieved through clock synchronization, ensuring that the electronic equipment within the scanning room operates within a predetermined frequency range. This not only avoids conflicts with the Larmor precession frequency of the acquired nuclides but also ensures that only natural background noise, free from external noise, exists within the frequency bandwidth of the acquired nuclides in the space. In other words, this method achieves time synchronization of all electronic equipment within the scanning room and effectively eliminates external noise sources that may affect the nuclide signals through frequency planning, thereby ensuring the accuracy and reliability of the scanning.

[0138] In some embodiments, clock synchronization of various electronic devices is achieved by converting wired clock signals into wireless clock signals and broadcasting them within the scanning room. This eliminates the need for heavy RF cables, simplifies the connection interfaces of movable parts, and thus saves costs. Furthermore, automatic synchronization of devices within the scanning room simplifies the integration process of smart products.

[0139] In some embodiments, the wireless clock signal is transmitted via a carrier.

[0140] A carrier refers to a physical medium or waveform used to transmit wireless clock signals. In some embodiments, the carrier includes, but is not limited to, at least one of infrared, electromagnetic waves, and ultrasonic waves.

[0141] Infrared refers to electromagnetic waves with wavelengths between microwaves and visible light. In some embodiments, wireless clock signals can be transmitted via infrared.

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

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

[0144] In some embodiments, such as Figure 6 As shown, a standard clock signal is sent from a standard clock source 222 to a wireless clock broadcasting module 320. After passing through internal components of the wireless clock broadcasting module 320, a standard clock signal is generated. This signal is amplified by a power amplifier and then input to a laser generator, which outputs an infrared light signal carrying the standard clock signal, which is broadcast within the magnetic resonance imaging (MRI) scanning room 600. MRI signal receivers 610-1 and 610-2, placed inside the scanning bed 240, and the patient monitoring module 210, placed on the wall, receive the infrared light signal broadcast from the MRI scanning room 600 via a photoelectric converter inside the wireless clock receiver module. This signal is converted into a clock signal, amplified, and then output to the MRI signal receivers 610-1 and 610-2, and the monitoring module 210 for use.

[0145] For more information on the monitoring module and scanning room, please refer to [link / reference]. Figure 1 And related descriptions. For more information on the standard clock source, magnet, signal receiving module, safety monitoring module, and power transmission module, please refer to... Figure 2 And its related description. More information about the wireless clock broadcast module can be found in [link to relevant documentation]. Figure 3 And related descriptions. For more information on wireless clock receiver modules, signal amplifiers, etc., please refer to... Figure 4 And its related descriptions.

[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's body after being excited by a radio frequency pulse. For example, a magnetic resonance signal receiver may include, but is not limited to, receiving coils and signal processors.

[0147] In some embodiments, the aforementioned method enables automatic clock synchronization between the magnetic resonance signal receivers (e.g., magnetic resonance signal receivers 610-1 and 610-2) of the scanning bed 240 and the patient monitoring module 210. This simplifies the cabling from the magnet 220 side to the patient monitoring module 210 on the wall, and from inside the scanning bed 240 to the magnetic resonance signal receivers (e.g., magnetic resonance signal receivers 610-1 and 610-2) inside the bed board. This reduces the cost of the cables themselves, the deployment and design costs of the cables, and potential safety hazards such as electrical leakage and tripping.

[0148] Electromagnetic waves are wave phenomena that propagate through space in the form of waves, caused by mutually perpendicular and mutually excited electric and magnetic fields. In some embodiments, wireless clock signals can also be propagated via electromagnetic waves.

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

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

[0151] In some embodiments, after the standard clock signal is amplified, it enters the modulator inside the wireless clock broadcast module 320 and obtains a clock signal with electromagnetic waves (e.g., radio waves in the 5.8 GHz band) as the carrier through amplitude modulation. The signal is then sent to the antenna and broadcast within the scanning interval 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 a clock signal broadcast within the scanning interval 700 with an electromagnetic wave (e.g., at a frequency of 5.8 GHz) as the carrier, 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 clock signals of the same source but different frequencies required by various electronic devices.

[0154] For more information on the signal receiving module, security monitoring module, scanning room, and motion controller, please refer to [link / reference needed]. Figure 1 And related descriptions. For more information on power transmitter modules and standard clock sources, please refer to... Figure 2 And its related description. More information about the wireless clock broadcast module can be found in [link to relevant documentation]. Figure 3 And related descriptions. For more information on demodulators and signal amplifiers, please refer to... Figure 4 And its related descriptions.

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

[0156] In some embodiments, the aforementioned method can simplify the cabling from the magnet 220 side to the patient's monitoring module 210 on the wall, reducing the cost of the cable itself, the cost of cable deployment and design, and potential safety hazards to persons / 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 associated with a stable connection between the mobile scanning bed 740 and the magnet 220. Furthermore, it also reduces safety hazards to persons / equipment such as leakage current and mechanical damage.

[0158] In some embodiments, the aforementioned method also enables automatic synchronization between the clock of the magnetic resonance signal receiver 730 located inside the wireless coil and the motion controller 710 in the hands of the operator 750 and the clock of the magnetic resonance imaging apparatus. Furthermore, since the components of the magnetic resonance imaging apparatus are freed from the limitations of cable connections, the operator is allowed greater freedom to use the electronic devices and motion controller, further improving the quality of the scanned images.

[0159] Ultrasound refers to sound waves with frequencies higher than the upper limit of human hearing (approximately 20 kHz). In some embodiments, wireless clock signals can also be transmitted via ultrasound.

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

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

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

[0163] In some embodiments, the signal receiving module 224 is located inside the magnetic resonance signal receiver 730, 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 on the ceiling, the environmental monitoring module 840 on the opposite wall, and the system-independent high-pressure injection module 820, physiological monitoring module 850, patient care robot 830, etc.

[0164] In some embodiments, the signal receiving module 224 detects ultrasonic waves carrying a standard clock signal within the scanning room 800 via an ultrasonic transducer, converts them back into a clock signal, amplifies them, enters a phase-locked loop, and outputs a clock signal of the same source but different frequency required by the electronic device.

[0165] For more information on the signal receiving module, security monitoring module, scanning room, and motion controller, please refer to [link / reference needed]. Figure 1 And related descriptions. For more information on power transmitter modules and standard clock sources, please refer to... Figure 2 And its related description. More information about the wireless clock broadcast module can be found in [link to relevant documentation]. Figure 3 And its related description. For more information on signal amplifiers, please refer to... Figure 4 And its related descriptions.

[0166] In some embodiments, the aforementioned method can simplify the cabling from the magnet 220 side 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, reducing the cost of the cables themselves, the cost of cable deployment and design, and potential safety hazards 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, the complexity of the connection interface between the mobile scanning bed 740 and the magnet 220 is reduced, further reducing the design and deployment costs of a stable connection between the mobile scanning bed 740 and the magnet 220, as well as the potential safety hazards to persons / equipment such as leakage current and mechanical damage.

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

[0169] In some embodiments, since the components of the magnetic resonance imaging device avoid the limitations of wireless connection, the influence of frequency interference on magnetic resonance images can be avoided, which facilitates the use by medical staff and also helps in the treatment of patients. It allows patients with various physical conditions to enter the scanning room 800 for safe and effective image scanning.

[0170] In some embodiments of this specification, propagation via multiple carriers enables the wireless clock synchronization method to be universally applicable in different environments and usage scenarios. Furthermore, it reduces deployment costs and avoids potential safety hazards such as electrical leakage and mechanical damage. It should be understood that... Figure 6-8 This is merely an example and does not limit the specific electronic device or carrier.

[0171] Some embodiments of this specification provide a magnetic resonance imaging apparatus configured to adjust the operating frequency of electronic equipment located within and / or entering the scanning chamber, wherein the adjusted frequency of the electronic equipment is outside the operating frequency range of the magnetic resonance imaging apparatus; wherein the adjustment includes clock synchronization between the magnetic resonance imaging apparatus and the electronic equipment.

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

[0173] The processor can process information and / or data related to the magnetic resonance imaging apparatus to perform one or more of the functions described in this 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), or any combination thereof.

[0174] A storage device is a device used to store 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 a separate device or part of another device. In some embodiments, a storage device may include random access memory (RAM), read-only memory (ROM), and any combination thereof. In some embodiments, a storage device may be implemented on a cloud platform.

[0175] The beneficial effects that the embodiments of this specification may bring include, but are not limited to: (1) Adjusting the frequency of electronic devices by clock synchronization enables diverse electronic devices to enter the scanning room without affecting the image quality and diagnostic results of 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 eliminated, that is, there is no need to equip dedicated computing equipment to run the algorithm. This not only significantly reduces costs, but also significantly reduces the size 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 mean that electronic devices do not need 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 synchronize with the standard clock, which greatly simplifies the operation process and improves the synchronization efficiency. (4) Only one wireless clock broadcast module is needed to realize clock synchronization of all devices equipped with wireless clock receiving modules in the scanning room, eliminating the need to install transmission and reception 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 detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, 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 and therefore remain within the spirit and scope of the exemplary embodiments described herein.

[0177] Furthermore, this specification uses specific terms to describe embodiments thereof. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Moreover, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined.

[0178] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods described herein. Although various examples have been discussed in the foregoing disclosure of some embodiments of the invention that are currently considered useful, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the spirit and scope of the embodiments described herein. For example, while the system components described above can be implemented using hardware devices, they can also be implemented solely using software solutions, such as installing the described system on existing servers or mobile devices.

[0179] Similarly, it should be noted that, in order to simplify the description disclosed herein and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of embodiments in this specification may sometimes combine multiple features into a single embodiment, drawing, or description thereof. However, this method of disclosure does not imply that the subject matter of this specification requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of a single embodiment disclosed above.

[0180] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates 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 be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this specification are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0181] For each patent, patent application, patent application publication, and other material, such as articles, books, specifications, publications, and documents, referenced in this specification, the entire contents of which are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this specification, as well as documents that limit the broadest scope of the claims in this specification (currently or subsequently appended to this specification). It should be noted that in the event of any inconsistency or conflict between the descriptions, definitions, and / or terminology used in the supplementary materials to this specification and the content of this specification, the descriptions, definitions, and / or terminology used in this specification shall prevail.

[0182] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A magnetic resonance imaging method, characterized in that, The method is performed by a magnetic resonance imaging device, and the method includes: The operating frequency of an electronic device located within and / or entering the scanning chamber is adjusted, 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; the method of synchronizing the clocks of the magnetic resonance imaging device and the electronic device includes sending a wireless clock signal to the electronic device via wireless clock broadcast; the wireless clock signal is used to desynchronize the first clock phase of the electronic device with the second clock phase of the magnetic resonance imaging device.

2. The method as described in claim 1, characterized in that, The number of electronic devices is multiple, and the step of sending a wireless clock signal to the electronic devices via wireless clock broadcasting includes: The wireless clock broadcast transmits the wireless clock signal unidirectionally to each of the multiple electronic devices in a one-to-many manner.

3. The method as described in claim 1, characterized in that, The wireless clock signal is used to synchronize the first clock frequency of the electronic device with the second clock frequency of the magnetic resonance imaging device.

4. The method as described in claim 1, characterized in that, The wireless clock signal is transmitted through a carrier, which includes at least one of infrared, electromagnetic waves, and ultrasonic waves.

5. A magnetic resonance imaging device, characterized in that, The magnetic resonance imaging device is configured as follows: The operating frequency of an electronic device located within and / or entering the scanning chamber is adjusted, 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; the magnetic resonance imaging device includes a wireless clock broadcast module configured to send a wireless clock signal to the electronic device via wireless clock broadcast; 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.

6. The magnetic resonance imaging apparatus as described in claim 5, characterized in that, 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; the wireless transmitter is configured to convert the amplified standard clock into the wireless clock signal.

7. The magnetic resonance imaging apparatus as described in claim 6, characterized in that, 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.

8. The magnetic resonance imaging apparatus as described in claim 5, characterized in that, The electronic device includes a first device related to magnetic resonance scanning, the first device including at least one of a wireless coil, a scanning bed, a power transmission module, a signal receiving module, and a safety monitoring module.

9. The magnetic resonance imaging apparatus as described in claim 5, characterized in that, The electronic device includes a second device unrelated to magnetic resonance scanning, which includes at least one of a patient monitoring module, a high-pressure injection module, a patient care module, an environmental monitoring module, a mobile controller carried by a caregiver and / or doctor, a computer, and a mobile phone.

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