阅读说明：本技术 用于成像装置部件诊断的设备和背景特异性信号模式分析 (Equipment and the analysis of background idiosyncratic signal patterns for imaging arrangement component diagnosis ) 是由 F·乌勒曼 G·M·普雷斯 I·格雷斯林 C·芬德科里 O·利普斯 C·J·H·A·布洛姆 于 2018-03-05 设计创作，主要内容包括：当预测诸如磁共振(MR)成像设备(12)的成像设备中的需要的部件服务时,诸如线圈电压、锁相丢失(PLL)事件等的部件参数被采样以监测系统部件。电压样本根据它们到线圈插入和拔出事件的时间接近性而被过滤,以生成经过滤的数据集,所述经过滤的数据集被处理器(46)分析来确定是否传输故障报告。服务建议基于传输的报告而被接收,并且包括根本原因诊断和被输入到用户接口(50)的服务建议。(When predicting the parts services of the needs in such as imaging device of magnetic resonance (MR) imaging device (12), the parameters of operating part that coil voltage, locking phase lose (PLL) event etc. is sampled to monitor system unit.Voltage sample is filtered to coil into and out the time proximity of event according to them, and to generate filtered data set, the filtered data set is analyzed to determine whether that transmission fault is reported by processor (46).Report of the service recommendations based on transmission and be received, and diagnose and be input into the service recommendations of user interface (50) including basic reason.)

1. one kind is convenient for identifying the upcoming component in magnetic resonance (MR) imaging device (12) based on component signal analysis The system (10) of failure, comprising:

MR imaging device (12) comprising multiple radio frequency coils (24,32,40)；

Connector (18), the multiple RF coil are connected to the connector, are connected to power in different times respectively Source (14)；

Processor (46), is configured as:

For each of the multiple RF coil, at least one RF coil parameter is monitored；

Filtered data set is generated and abandoning data point according at least one predefined measurement；

At least one fault state at least one system unit is identified based on the filtered data set；

Transmit the report of at least one fault state identified；

Receive includes the information for the basic reason for indicating at least one fault state identified and the signal of parts services suggestion； And

The parts services suggestion is exported on user interface (UI) (50).

2. system according to claim 1, wherein at least one monitored coil parameter includes at least one described RF The voltage of the measurement of coil.

3. system according to claim 2, wherein the processor (46) is additionally configured to detect the voltage of the measurement With the deterioration of time, and wherein, when the voltage of the measurement is under predetermined threshold, the fault state is identified.

4. system according to any one of the preceding claims, wherein the component exported on the UI (50) Service recommendations include: table in each of the multiple RF coil of identification, and the service recommendations for each RF coil.

5. system according to claim 4, wherein the table further includes each RF coil for the service that is proposed The basic reason of the fault state detected.

6. system according to claim 5, wherein the service recommendations be when the basic reason be determined to be in it is predetermined The suggestion of the coil is replaced when in the period under voltage degradation to predetermined threshold.

7. system according to any one of the preceding claims, wherein the RF coil (24,32,40) is digital RF Coil.

8. system according to any one of the preceding claims, wherein the processor (46) is additionally configured to pass through The data point that falls in insertion event delay periods is abandoned to generate the filtered data set.

9. system according to claim 8, wherein the insertion event delay periods are neighbouring and in given coil (24,32,40) are inserted at least one in the connector (18) or from before and after the connector (18) extraction The predetermined amount of time that item occurs.

10. system according to any one of the preceding claims, wherein at least one described monitored parameter is lock (PLL) event is mutually lost, and wherein, the processor (46) is additionally configured to the quantity when PLL event in predetermined amount of time It is interior or be more than pre- by being filtered in the one group of period determined for the effective time range near insertion event Determine to generate warning when threshold value.

11. system according to any one of the preceding claims, wherein the system unit is one of the following:

One or more of described RF coil is connected to the connector of power source；And

One or more of described RF coil is connected to the coil interface of the connector.

12. one kind identifies the upcoming unit failure in magnetic resonance (MR) imaging device (12) based on component signal analysis Method, comprising:

For each of the multiple RF coils for being periodically connected to power source (14) via connector (18), monitoring is at least One radio frequency (RF) coil (24,32,40) parameter；

Filtered number is generated by the data point measured to collect during being discarded in monitoring predefined according at least one According to collection；

At least one fault state at least one system unit is identified based on the filtered data set；

Transmit the report of at least one fault state identified；

Receive includes the information for the basic reason for indicating at least one fault state identified and the signal of parts services suggestion； And

The parts services suggestion is exported on user interface (UI) (50).

13. according to the method for claim 12, wherein at least one described monitored coil parameter include it is described at least The voltage of one RF coil periodically measured.

14. it according to the method for claim 12, further include deterioration of the measured voltage of detection with the time, and its In, when measured voltage is under predetermined threshold, the fault state is identified.

15. method described in any one of 2-14 according to claim 1, wherein the portion exported on the UI (50) Part service recommendations include: table in each of the multiple RF coil of identification, and are directed to each RF coil (24,32,40) Service recommendations.

16. according to the method for claim 15, wherein the table further includes each RF coil for the service that is proposed The basic reason of the fault state detected of (24,32,40) identified.

17. according to the method for claim 16, wherein the service recommendations are when the basic reason is determined as The suggestion of the coil (24,32,40) is replaced when in predetermined amount of time under voltage degradation to predetermined threshold.

18. method described in any one of 2-17 according to claim 1 further includes when falling in insertion event delay by abandoning Data point in section generates the filtered data set.

19. according to the method for claim 18, wherein the insertion event delay periods are neighbouring and in given coil Be inserted into the connector or from before and after connector extraction at least one of occur it is predefined when Between section.

20. according to claim 1 in 2-19, method described in any one of claim 11-13, wherein at least one quilt The parameter of monitoring is locking phase loss (PLL) event, and further includes the quantity when PLL event within a predetermined period of time or logical The effective time range crossed near for insertion event is raw when being filtered and being more than predetermined threshold in one group of period determining At warning.

21. method described in any one of 2-20 according to claim 1, wherein the system unit is one of the following:

One or more of described RF coil is connected to the connector of power source；And

One or more of described RF coil is connected to the coil interface of the connector.

22. one kind is convenient for identifying the upcoming component in magnetic resonance (MR) imaging device (12) based on component signal analysis The system (10) of failure, comprising:

MR imaging device (12) comprising multiple radio frequency (RF) coils (24,32,40)；

Connector (18), the multiple coil are connected to the connector, are connected to power source in different times respectively (14)；And

Processor (46), is configured as:

It collects locking phase and loses voltage in each of the data sample and the multiple RF coil of at least one of (PLL) event VDL；

Filtered data set is generated and abandoning data sample according at least one predetermined measurement；

At least one fault state in the RF coil of at least one monitoring is identified based on the filtered data set；

Transmit the report of at least one fault state identified；

Receive includes signal below:

Indicate the information of the basic reason of at least one fault state identified；And

Coil service recommendations；And

The coil service recommendations are exported on user interface (UI) (50).

23. system according to claim 22, wherein at least one described predefined measurement is neighbouring and given Coil is inserted at least one insertion thing occurred in the connector or from before and after connector extraction Part delay periods, and wherein, the processor (46) is additionally configured to fall in insertion event delay periods by abandoning Data sample generate the filtered data set.

24. system according to claim 22, wherein at least one described predefined measurement is the predetermined of PLL event Number of thresholds, and wherein, the processor (46) is additionally configured to as the PLL detected in the filtered data set Warning is generated when the quantity of event is more than the predetermined threshold within a predetermined period of time.

Technical field

The present invention is applied in imaging system maintenance system and method.It will be appreciated, however, that described technology can also be with Applied in other systems component failure detection system, other predictive maintenance technologies etc..

Background technique

The detection of equipment and/or component mistake in imaging device (such as MR scanner) is complicated task.The task Further by different component versions (for example, soft hardware version), analog or digital coil and portion from different manufacturers Part interferes.

In the failure of diagnostic imaging device or the conventional method of failure, initial remote service is attempted via the remote of the system of arriving Cheng Lian fetches identification problem.Since the height of this analysis is uncertain, multiple Field Replaceable Units (FRU) are often sent To customer site to allow field service engineer (FSE) to solve the problems, such as.However, this method causes excessive component to be sent to Customer site.In addition, the component to break down is not often correctly identified during first time accident analysis, and therefore not It is sent, and is not therefore at the scene during service action.Therefore, during corrective maintenance, the part that correctly works It is often unnecessarily replaced, or the part of work is replaced together with the part to break down, because of the correct knowledge of the coil to break down It is other and remarkable.In addition, FSE must be at the scene back and forth repeatedly so that imaging equipment be run completely.

This application provides the new and improved systems determined convenient for imaging system components fault detection and basic reason And method, thus overcome problem mentioned above and other problems.

Summary of the invention

According in a first aspect, it is a kind of convenient for identified based on component signal analysis in magnetic resonance (MR) imaging device will The system of the unit failure of arriving includes MR imaging device and connector, and the MR imaging device includes multiple RF coils, described Multiple RF coils are connected to the connector, are connected to power source in different times respectively.The system also includes places Device is managed, the processor is configured to: join at least one radio frequency (RF) coil of each monitoring in the multiple RF coil Number generates filtered data set and abandoning data point according at least one predefined measurement, and based on described At least one fault state in RF coil of the filtered data set to identify at least one monitoring.The processor gone back by It is configured to the report of at least one fault state of transmission identification, receiving includes at least one fault state for indicating the identification Basic reason and parts services suggestion information signal, and export the parts services on user interface (UI) (50) It is recommended that.

One kind is identified coming in magnetic resonance (MR) imaging device based on component signal analysis according to another aspect, The method of unit failure include: for being periodically connected to each of multiple RF coils of power source via connector At least one radio frequency (RF) coil parameter is monitored, by collecting during being discarded in monitoring according at least one predefined measurement Data point and generate filtered data set, and based on the filtered data set identify at least one monitoring RF line At least one fault state in other subassemblies of circle or imaging chain.The method also includes transmitting at least one identified The report of fault state, the report include the information and component of the basic reason at least one fault state that instruction is identified The signal of service recommendations, and the output winding service recommendations on user interface (UI).

According to another aspect, it is a kind of convenient for identified based on component signal analysis in magnetic resonance (MR) imaging device will The system of the unit failure of arriving includes MR imaging device and connector, and the MR imaging device includes multiple radio frequencies (RF) line Circle, the multiple RF coil are connected to the connector, are connected to power source in different times respectively.The system is also Including processor, the processor is configured to: collect data sample and institute that locking phase loses at least one of (PLL) event Voltage VDL in each of multiple RF coils is stated, generates warp and abandoning data sample according at least one predetermined measurement The data set of filtering, and at least one of the RF coil based on the filtered data set identify at least one monitoring therefore Barrier situation.The processor is additionally configured to the report of at least one fault state of transmission identification, and the report includes referring to Show the information and coil service recommendations of the basic reason of at least one fault state of the identification, and at user interface (UI) On make available coil service recommendations.

One advantage is that healthy MR coil is not replaced unnecessarily.

Another advantage is that the MR system unit that will be broken down is identified before an actual failure.

Another advantage is that system reparation is accelerated.

Those skilled in the art read and understand it is described in detail below after, by recognize subject innovation other are excellent Point.

Detailed description of the invention

Attached drawing is not construed as being limited only merely for the purpose of diagram various aspects.

Fig. 1 illustrates be convenient for identification for being imaged at magnetic resonance (MR) according to one or more aspects described herein The system of candidate radio frequency (RF) coil replaced in system.

Fig. 2 is that had according to the diagram of the system of various aspects described herein convenient for executing for predictive component The more detailed view of the component of the ponent design in advance of replacement.

Fig. 3 illustrates low-voltage (VDL) He Gao electricity according to multiple coils of one or more features described herein The curve graph for pressing (VDH), shows progressive deterioration of the voltage level of measurement in the case where suspicious connector issue.

Fig. 4 illustrates the song of low-voltage (VDL) and high voltage (VDH) according to one or more features described herein Line chart shows the voltage drop of reproduction.

Fig. 5 illustrates the song of low-voltage (VDL) and high voltage (VDH) according to one or more features described herein Line chart shows short instantaneous voltage problem.

Fig. 6 is illustrated to be held according to the filtering of the voltage signal for showing measurement of one or more features described herein The schematic diagram of capable mode.

Fig. 7, which is illustrated, identifies magnetic resonance based on component signal analysis according to one or more features described herein (MR) method of the upcoming unit failure in imaging device.

Specific embodiment

Although being described below using digital RF coil and illustrating the innovation.Certainly, identical principle can be applied to foot The available other component of enough diagnostic messages.The embodiment of proposition is realized to component (such as coil conjunction connector) failure and bad Efficient (rapidly and reliably) of the coil fallen the and remote diagnosis of automation, and thus mitigate the superfluous of complex maintenance task The result that long dull analysis and level of skill rely on.Specifically, this solution is analyzed a large amount of different in an automated manner Signal and equipment.

Certain fault modes (such as connector issue) of component (such as voltage and are accordingly swept in certain diagnostic signals Retouch) in as the time shows very specific mode.About component (such as coil) health status and its with it is corresponding peculiar The reference information of relevance of time dependent mode can be used to diagnose the state or failure of particular elements, and provide pre- Property information afterwards.This allow may the fine basic reason of problem analyze, cannot use be such as found in conventional method and deposit " simple " error threshold or time independent relevance identify.

Due to possible fault mode complexity and more efficiently, accurately and remotely determine coil situation possibility Property, the solution of proposition is particularly well-suited for MRI coil.However, it will be understood by those skilled in the art that in enough priori It is described to innovate the equipment and/or component that can be applied to any complexity under knowledge and the available situation of diagnostic message.

Fig. 1 illustrates be convenient for identification for being imaged at magnetic resonance (MR) according to one or more aspects described herein The system 10 of candidate radio frequency (RF) coil replaced in system.The system includes MR imager 12, and the MR imager 12 has Via Internal cable 16 (for example, the galvanic electricity cable in user power source etc.) be connector 18 (for example, table top connector, positioned at being The connector etc. at magnet in system) power source 14 of power is provided, multiple RF coils 22,30,38 are swept in one or more MR The connector 18 is coupled to via External cable 20 at different time during retouching.Each RF coil 22,30,28 includes phase The Internal cable 24,30,48 answered, power are supplied to corresponding first by corresponding Internal cable 24,30,48 and receive Device module (RXE) 26,34,42 and second receiver module (RXE) 28,36,44.RXE includes recording parameters information (for example, such as Fruit detection is then voltage on the basis of per second on threshold value) measuring device.System 10 further includes fibre concentrator 15, institute Fibre concentrator 15 is stated via Internal cable 16 (for example, the fiber optic cable etc. for the being used for fibre concentrator) company of being similarly coupled to Device 18 is connect, multiple RF coils 22,30,38 are at the different time during one or more MR are scanned via External cable 20 by coupling It is connected to the connector 18.Each RF coil 22,30,28 includes corresponding Internal cable 24,30,48, and signal passes through the phase The Internal cable 24,30,48 answered is supplied to corresponding first receiver module (RXE) 26,34,42 and second receiver module (RXE)28、36、44。

MR imaging device 12 be coupled to execution processor 46 and storage for execute various methods described herein, The memory 48 of the computer executable instructions of movement, method etc..Memory 48 can be control program and be stored in thereon Computer-readable medium, disc, hard disk drive etc..The computer-readable medium of common form includes such as floppy disk, soft Property disk, hard disk, tape or any other magnetic-based storage media, CD-ROM, DVD or any other optical medium, RAM, ROM, PROM, EPROM, FLASH-EPROM, its variant, other memory chips or box type magnetic, or processor 46 can be read from And any other tangible medium executed.In this context, described system may be implemented within one or more general meters Calculation machine, (one or more) special purpose computer, the microprocessor of programming or microcontroller and peripheral integrated circuit element, ASIC or Other integrated circuits, digital signal processor, the electronics of hardwire or logic circuit (such as discrete component circuit) may be programmed and patrol It collects on equipment (PLD, PLA, FPGA, graphics processing unit (GPU) or PAL etc.), or is implemented as it.

Fig. 2 is the portion in advance having convenient for execution for predictive part replacement according to various aspects described herein The diagram of the system 10 of the more detailed view of the component of part diagnosis.The system include as be stored in MR journal file thereon, MR imaging device 12, processor 46, memory 48 and user interface 50.Memory stores MR journal file 100 on it, The MR journal file 100 includes the coil identification for each coil for being inserted into MR imaging device via connector (ID) information 102.Journal file further includes the type for describing the scanning that each coil has been used and the scanning of duration Log 104.The information is determining each coil and is in how frequently use useful, this is used to assess remaining line in turn Enclose service life etc..

Memory also stores parameter detection module, and when being executed by processor 46, the parameter detection module monitors one Or multiple coil parameters.The coil parameter of monitoring can include but is not limited to: measured voltage；Scan type and duration (for example, head and neck, whole body, contrast scans etc.)；Coil aging (for example, from after manufacture, installation etc.)；Coil version (and its associated failure rate)；The number that coil has been used is (for example, connector is frequently used more；Coil is made Total duration scanning (always using length)；Etc..The parameter information of the monitoring is stored in various journal files and deposits It stores up in equipment, for being analyzed by processor.

Memory further includes comparator module 108, and the comparator module 108 compares prison when being executed by processor 46 The parameter and threshold value of survey.Such as the voltage of measurement is obtained, and if the voltage of monitoring is down under predetermined threshold, fault detection module 110 (also being executed by processor) identify the fault state in coil.In another embodiment, when the voltage of measurement is in the predetermined time In section or scanning times in predetermined threshold when assigning scheduled measurement number, fault detection module identifies fault state.Comparator Extraly compare the parameter and other predetermined thresholds of other monitorings.For example, coil it is total using the time can with predetermined threshold into Row compares, and coil needle is labeled upcoming failure or preventive replacement etc. on the predetermined threshold.

Processor 46 periodically (for example, per hour, daily etc.) to remote server (not shown) sends signal analysis 112 are reported to examine.Signal analysis report includes using relevant information, the fault message, coming of detection to coil Fault message etc..Processor receives service recommendations message 114 from remote server, and to scene (that is, MR imaging device Place) technical staff's presentation service recommendations.The service recommendations presented to technical staff, which can also be included in coil, to be replaced It is final determine before suggestion measure.Filtering module 118 is executed by processor, with to remote server send data with Just invalid data point is filtered out before examining.The mode that filtering is performed is more fully described about Fig. 6.

Table 1 shows that being such as used for system and relevant device and/or sub-portion based on what is generated by diagnostic signal analysis The simplification example of the fault message so as to remote diagnosis (i.e. not at the position of MR system) is transmitted in the warning of part by processor 46.

Table 1

Table 2 shows that the example such as reported by the received service recommendations of processor 46.Example instruction is to be based on being directed to The warning of field service engineer (at the position of system) generated by diagnostic analysis and/or logic.

Table 2

In one embodiment, service recommendations table 116 is presented on the user interface.Service recommendations table 116 passes through The coil identification information (for example, sequence number, coil number or some other suitable identifiers) of coil identifies each coil, And indicate whether coil should be replaced.Assigning for predetermined voltage threshold is had fallen within a certain period of time for example, having The coil of the voltage of the measurement of predetermined access times or pre-determined number is proposed replacement.Other lines of low-voltage measurement are not shown Circle is not proposed replacement.In another embodiment, the identification of service recommendations table 116 needs other of service or the MR system replaced Component.For example, the coil voltage information of monitoring can be used to determine the connection that one or more RF coils are connected to power source Device is failure, and/or the coil interface that one or more RF coils are connected to connector is failure.

Continue to refer to figure 1 with 2, various signals with the following drawings and description of time illustrate unlike signal it is this when Between the trait model that relies on, and it determines how to be used to distinguish fault mode and basic reason.

Fig. 3 illustrates the low-voltage (VDL) 150 and height according to multiple coils of one or more features described herein The curve graph of voltage (VDH) 160, the voltage level for showing measurement are progressive bad in the case where suspicious connector issue Change.The voltage of measurement in each of multiple coils is indicated by the point that corresponding color encodes.In the fluctuation instruction of voltage Portion's device network unstable or the state that will be broken down.Using be specifically related to equipment (such as coil interface), son The analysis of system (RXE0) and signal (VDL), fault mode (for example, voltage connection/connector break down or deterioration) and position Setting (such as coil interface) can be identified.For this Signal Degrade for predicting failure before real system failure, this can It is solved by trying to be the first measure accordingly.

According to curve graph 150, predetermined voltage threshold is arranged to 1.2 volts.Continue or is repeatedly surveyed under threshold voltage The coil of amount is considered as the candidate of replacement.As can be seen, to (for example, the period etc. in a few weeks) of the period of measurement When end, the voltage of several coils is had fallen under 1.2V threshold value.In this example, violet spot indicates head and neck The voltage of the measurement of coil.When end to period of monitoring, the voltage 152 of the measurement of head and neck coil (purple) Continue under threshold value, and therefore head and neck coil are the candidates of replacement.(such as head coil is (green for other coils Color), base low coil (navy blue)) show the voltage of measurement under threshold value, but only sporadically, and therefore do not built View replacement.

Fig. 4 illustrates the low-voltage (VDL) 170 and high voltage (VDH) according to one or more features described herein 180 curve graph shows the voltage drop of reproduction.Signal visualization shows the electricity under specified normal operation range Pressure drop has been carried out the corrective measure 182 (at about the 2/3 of shown time) again (red line) later.This is arranged Lead to the normal operation range of voltage (VDH) in the Shi Yi time.

However, reproduction instruction of the voltage degradation in VDH after the measure soon, the basic reason of failure be not initial Corrective measure correctly solves.Therefore subsequent measure should include the wider search for basic reason, especially more lean on Nearly power source, because according to curve graph, all coils for being connected to system are all influenced by voltage problem.

Fig. 5 illustrates the low-voltage (VDL) 190 and high voltage (VDH) according to one or more features described herein 200 curve graph shows short instantaneous voltage problem.Signal visualization show signal (VDL, VDH) generally remain in it is pre- Determine on threshold value (red line).However, at an example 202 (i.e. during one day at about the 3/4 of visualization time), Being remarkably decreased for (all devices) VDH signal has occurred.This instruction there is no it is progressive deterioration or will break down coil/ Connector issue, but the instantaneous state of system leads to failure.This most-likely due to system use/operator, and it is different The fixed corrective action caused immediately.Therefore according to provided example, it is therefore clear that the analysis and background of signal specific and equipment Provide the value information that can be used to identify the basic reason of fault mode and/or failure.

Described visual analysis can be analyzed to execute, including but not limited to by numerical signal appropriate: filtering (has It is window or windowless)；Association；Curve matching；Etc..For example, due to its time background (phase at the time of disconnecting or connect coil Between locking phase lose mistake) and not indicating the unqualified event of true failure can be filtered out.In another embodiment, letter is executed Number low-pass filtering, to eliminate or reduce the short momentary fluctuation due to the scanning of execution.In another embodiment, the time is executed The analysis of window processing, this ensures that only existing mistake is considered as mistake in specified minimum duration, to avoid signal The Excessive sensitivity of analysis.

MR system described herein has multiple connectors, and multiple coils are connected to each of which.Perhaps Multi-parameter is monitored by digital coil, including voltage and other fault modes, and such as locking phase loses (PLL).In the suitable of data After filtering, the filtered data from daily journal file are analyzed together with other sources, such as comprising monitoring Data (comprising come from digital coil, the data of environmental data (studio and inspection chamber) or other digital units) file. Connector may include the lens system for being used for transmission digitalized data and supplying voltage.After connecting coil, all Digital internal component provides correct sensing data, and there are delay periods before, so that in most cases it is necessary to filter out Data near insertion event.Any sample with the timestamp record before coil is inserted into must be all filtered out, because The mistake generated by the incorrect time synchronization between coil subsystem and actual log file is indicated for them.In addition, inserting Entering the sample occurred immediately after coil must be filtered out, and the duration of filter constant must be adapted to just be recorded Individual parameter.When being inserted into for second of two-piece type coil, the change of the voltage in first (connected part) Change can occur, so that the sample in the insertion event attachment record of other coils is also filtered.The delay of monitoring at first Time is selected as convenient for filtering (such as 90 seconds lost for locking phase), and the delay time when end of scan is selected as Short time needed for shorter than removing imaging device by patient and extract coil extracting event data sample (for example, be filtered out Before 15 seconds).

Fig. 6 is illustrated to be held according to the filtering of the voltage signal for showing measurement of one or more features described herein The schematic diagram 230 of capable mode.By the signal of processor 46 (for being named as the letter of " voltage VDL " (in the second row) Number, indicated by circle) filtering can cooperate comprising the information and corresponding effective range about " insertion event " Secondary information source executes, i.e., no signal is considered having directly before being inserted into coil or directly before extracting coil Effect.Therefore, the valid data of diagnostic analysis are only used for without the circle instruction of red cross.

In diagram 230, top row 232 shows the equipment of monitoring or the event of coil (for example, basic coil).Event The time D being disconnected including the connected time C of basic coil and basic coil.The connection delay period 234 is illustrated, and from Connection Time C crossed for the first efficiently sampling period 236.The center row 238 of schematic diagram is shown for the coil monitored The data sample that parameter (for example, voltage VDL) is collected, wherein the data sample needs to filter.The bottom line 240 of schematic diagram is shown The event of the different coils (for example, top winding) in system is gone out, wherein the event influences the data sample of the coil of monitoring This filtering.Specifically, when the connection C ' of different coils (for example, top winding), the voltage VDL of monitored coil Possible waves.Therefore, delay periods 242 are illustrated near Connection Time C ', and the data sample collected during this period is considered In vain.Different coils is disconnected at time D ' later.After delay periods 242, the second effective sample area is shown 244, the data sample collected during this period for the coil of monitoring is considered valid.Once detect that basic coil disconnects D, from Second effective range 244 crosses until the data sample disconnected in the delay periods 245 of D is recognized as in vain, and is filtered It removes.

In the example of Fig. 6, data sample 246 is filtered out to occur before the connection of basic coil (that is, sample quilt Think invalid, because there should not be voltage VDL before proceeding).Second data sample 248 is filtered out to occur connecting In delay periods (that is, occurring very much to be considered valid long after the connection of basic coil).Data sample 250,252 occurs the In one effective sample area, and therefore it is not filtered out.Data sample 254 occurs between effective sample area 236,244 In delay periods 242, top winding is connected during this period, and is therefore filtered out.Data sample 256,258 occurs second In effective sample area, and therefore it is not filtered out.Data sample 260 occurs during the turn-off delay period 245 (that is, leaning on very much The point in time that nearly basis coil disconnects) and cannot be considered valid, and be therefore filtered out.It should be understood that invalid data sample This filtering is scanned by comparing from the associated timestamp of each data point and different coils given by the processor 46 of Fig. 1 Or the time is connected and disconnected to execute during test program etc..

In one embodiment, when executing filtering, the duration of insertion event delay is (in coil into and out thing Delay periods before and after part, data sample point is considered invalid during this period) it is chosen to invalid locking phase and loses Accident part is minimized.For example, puppet positive PLL event cannot be from data if delay periods are too short (for example, 3 seconds etc.) It is suitably filtered out in sample set.On the other hand, if insertion event delay periods are too long, actual PLL event may Unnecessarily filtered out.

In another embodiment, QPI (ginseng that is related to the spike for causing picture quality to deteriorate and passing through MR device measuring Number) it is used to execute the filtering of invalid data collection.In order to which the supplemental characteristic of sampling can compare between different systems, and in order to It generating for the systematic threshold value of institute, data need for example to be normalized to scan hour or some other suitable measurements, and And hereafter for example it is polymerize on the basis of daily.According to an example, (for example, 0.5) is set in upper limit QPI threshold value, described Data sample is considered indicating failure on upper limit QPI threshold value.If the predetermined quantity of the fault sample of the special parameter is more than Threshold value, such as polymerize on the basis of daily, then the warning of the service or replacement for coil can be generated.

In another embodiment, PLL data are polymerize on the basis of daily, and sliding window is (for example, have five days Duration or some other predetermined lasting times) be used to check whether the PLL time is had occurred and that in window more than one day. If such as more than two event is fallen in sliding window, is alerted and is generated and sent to remote server for analyzing. The sliding window duration is selected as being sufficiently long, so that just monitored specific coil will be connected in window At least twice to MR imaging device.For example, if MR coil one week is only only used once, selection 3 weeks, 5 weeks etc. windows.

In another embodiment, the voltage VDL of each coil is monitored.Predetermined threshold is set, in the predetermined threshold Under alert and be generated.It should be understood that the deterioration in VDL is monitored throughout all coils for being connected to connector.For example, if The minimum value (after filtration) of coil supply voltage is down under threshold value, in low-voltage only for being connected to the more of connector Data sample is counted as the warning for coil defect in the case where a generation in a coil.However, in multiple lines In the case that circle shows identical behavior, then the more Gao Keneng there are problem at connector or power source for connector Property, and data need to be analyzed on the basis of each connector.

For example, if specific coil shows the low-voltage on a connector but the normal electricity on different connector Pressure, then basic reason is determined as connector issue not being being coil problem.However, showing multiple companies in a coil It connects at device in problematic situation, basic reason is determined as defective coil.

Fig. 7, which is illustrated, identifies magnetic resonance based on component signal analysis according to one or more features described herein (MR) method of the upcoming unit failure in imaging device.At 400, periodically connected for via connector To each of multiple RF coils of power source, at least one radio frequency (RF) coil parameter is monitored.At 402, during monitoring The filtered data set by abandoning data point is collected according at least one predefined measurement.According to an example, In At least one described predefined measurement is neighbouring and is inserted into connector in given coil or extracts it from connector In afterwards and later at least one of insertion event delay periods for occurring, can be fallen in insertion event delay periods by abandoning Data sample generate filtered data set.Additionally or alternatively, when the predetermined threshold that predefined measurement is PLL event When being worth quantity, when the quantity of the PLL event detected in filtered data set is within a predetermined period of time or by being directed to Effective time range near insertion event be filtered and determine one group of period in be more than predetermined threshold when, can generate Warning.

At least one fault state at 404, in the RF coil of at least one monitoring based on filtered data set It is identified.At 406, the report of at least one fault state identified is transferred to remote server.At 408, from remote Journey server receives the information of the basic reason of at least one fault state comprising instruction identification and the letter of coil service recommendations Number.At 410, service recommendations are exported on user interface (UI).

Innovation is described by reference to several embodiments.Other people can carry out after the above-mentioned detailed description of reading and understanding Modifications and substitutions.It is intended to for the innovation being construed to include all such modifications and substitutions, as long as they fall into claims And its within the scope of equivalence.