Adaptive control of data transmission rate. RU patent 2511641.

FIELD: physics, communications.

SUBSTANCE: present invention relates to means of adaptive control of data transmission rate, capable of estimating the real instantaneous value of the available quality of service of a link for transmitting data and controlling the data transmission rate based on the estimates. Feedback control can be both local with respect to the device for collecting analysis data, e.g. such as a magnetic resonance imaging coil, and on a link by reducing the data transmission rate, at least instantaneously, to match link performance in time.

EFFECT: facilitating gradual reduction of image quality at low data transmission rates.

14 cl, 5 dwg

THE TECHNICAL FIELD

The present invention, in General, concerns device, system, method and software for adaptive management data rate based on the available quality of service of communication lines, in particular for use with wireless coils magnetic resonance imaging (MRI).

PRIOR ART

Some manufacturers MRI systems currently trying to develop a fully wireless coils for MRI. A prerequisite for the creation of such wireless MRI coils is that analog magnetic resonance (MR) signal (in the case of "analog" coil) or collected MR-data (in the case of the "digital" coil) can be transmitted in a system of magnetic-resonance research through wireless high-speed communication lines.

Wireless communication line has a certain quality of service (QoS) in respect of the characteristics of latency and bandwidth of this line. In real life implementation of wireless data largely depends on the actual response of the wireless channel used to perform data transfer. The actual response of transmission may change significantly within a relatively short time in power, for example, move the antenna, caused, for example, by moving the patient. Moving the antenna can cause reflection or absorption in the range of radio frequencies (FR), which may have an impact on the instantaneous value of the signal-to-noise ratio (SNR) of the wireless channel. This can reduce the characteristics of the communication line, at least temporarily. In addition, the noise from other (not private) equipment can also temporarily reduce the characteristics of the communication line.

If the number of items/channel MRI coil increases, the required speed of data transmission also increases MR. A precondition for effective use of wireless MRI systems is the ability to achieve the required data rate MR, as well as the required power dissipation during wireless transmission. Given the currently available wireless technologies can be expected that, at least in the next 5-10 years, these technologies will be blocking factor for a number of channels that could be efficiently used or associated with MRI coils.

When actually existing technology transfer is a blocking factor, preferably at least to make the most of the available (changing) of bandwidth and latency. This can be done by lossless compression enabled MR-signal, and by compressing with limited losses. However, it may still be insufficient to achieve the smooth operation of wireless MRI systems. Collected MR-data must be sent from MRI coil as soon as possible after collection, since storage MR-data will require a huge amount of memory, leading to a dissipation of energy and the consumption volume on MRI coil. Additionally, if now available wireless technologies operational characteristics of the communication line can fall below a certain minimum threshold in some moments of time, after which collected MR-data will simply be lost. This is unacceptable in terms of the prospects of MRI. It may even require emergency interrupt MRI scan.

When using wireless MRI coil another problem to be solved is to provide reliable wireless control MR receiver on MRI coil with respect to its settings in time. And it is necessary to solve the problem of providing secure transmission of information management at MR receiver.

SUMMARY OF BEING INVENTION

The present invention is to provide adaptive management data transfer rate, allowing to improve the operational characteristics of available communication lines.

This task can be solved by the device of claim 1 and in the manner indicated in paragraph 13 of the claims.

Accordingly in the first aspect of the present invention presents the device. The device contains a block of data collection, configured to collect survey data, the communication unit, configured to data of the survey by line communication and reception of information management through communication lines, and also block adaptation configured with the possibility of adapting the data transfer rate of the survey based on available quality of service lines of communication, and the unit of data collection and/or block adaptation configured to management on the basis of information management. Thus, it can be achieved the maximum possible data transmission rate for the given conditions of communication. Therefore, for the available communication lines you can achieve better performance. Namely, you can optimize the transmission of data for real-quality service. Additionally, there is no need to interrupt data collection procedures under unfavourable conditions of communication. This also allows remote control of the device and its unit of data collection and/or block adaptation using some networks, such as the Central control unit that transmits information management through wireless transmission medium.

The second aspect of the present invention block data collection configured to perform data compression survey, and the block adaptation configured to adapt the degree of compression. Thus, lower quality of service you can choose the higher the compression ratio, and Vice versa. Thus, when a certain quality of service may be transferred as much information as possible. The second aspect can be combined with the first aspect.

In the third aspect of this the invention of the unit adaptation configured to issue commands to a unit of data collection on the failure of compression or compression without loss of survey data, if available, the quality of service exceeds a certain limit, and issue commands to a unit of data collection to perform lossless compression with more high compression ratio than in the case, when available, the quality of service exceeds a certain limit, or lossy compression survey data, if available, the quality of service is equal to some limit or below it. Thus, lossy compression can be avoided, if applicable, the corresponding bandwidth. On the other hand, the data transfer may not be violated if the bandwidth is smaller. The third aspect can be combined with the first or second aspects.

In the fourth aspect of the present invention block adaptation configured to adapt the speed of the data collection unit of data collection. In case of reduction of the available bandwidth, the bandwidth of the data transmission can be reduced by decreasing the speed of data collection. Thus, you can ensure seamless transfer of data. A fourth aspect can be combined with any of the foregoing aspects.

In the fifth aspect of the present invention block adaptation configured to issue commands to a unit of data collection on narrowing at least one window to collect survey data. By narrowing the window to collect survey data, in a specific time interval will be collected less data of the survey. Thus, the capacity of data transmission can be reduced, which provide continuous transmission of data, despite the reduced bandwidth. The fifth aspect can be combined with any of the foregoing aspects.

In the sixth aspect of the present invention block adaptation configured to adapt the ratio of survey data, if available, the quality of service is the first limit or below it, and adapt speed data acquisition unit data collection, if applicable quality of service is second limit or below it. Thus, there is the possibility of using local feedback to reduce the data rate survey by increasing the compression ratio, if such a measure to achieve an appropriate quality of service. If available, the quality of service is insufficient even at maximum compression, you can use the global feedback to slow data collection surveys and/or reuse Windows for data collection to reduce data transfer rate. The sixth aspect can be combined with any of the foregoing aspects.

In the eighth aspect of the present invention, the device additionally contains a control unit buffering, configured to buffering received information management and maintenance fill rate and level, as well as a back-up control unit configured to determine the available quality of service based on the fill rate and level, issued by the managing unit buffering, setting, if available, the quality of service is below a certain limit reservation, and unit control data collection, if the establishment has a positive result, and the unit of data collection configured to management on the basis of the buffered information management. This gives the opportunity to manage one or more blocks of data collection or receivers, when the service quality becomes so low that the management information from the remote control unit at some point of time lost. Eighth aspect can be combined with any of the foregoing aspects.

In the ninth aspect of the present invention, the device is a wireless coil magnetic resonance imaging. Thus, the device can be easily integrated into an existing wireless system with magnetic resonance imaging. Ninth aspect can be combined with any of the foregoing aspects.

In the tenth aspect of the present invention presents the system. The system contains at least one device on any of the foregoing considerations, as well as the control device is configured with the ability to transfer information management, at least one device and receive data of the survey, at least from a single device. The system ensures improved data exchange examination and information management, at least between one device and device management. On the other hand, you can ensure seamless transfer of data of the survey on the device of management under difficult conditions of connection. At the same time it becomes possible reliable wireless remote control, at least one device.

In the eleventh aspect of the present invention, the control unit is configured with the possibility of reducing the bandwidth of the connection line, if available, the quality of service well first threshold or below it, and the block adaptation configured to perform local reduce the speed of data transfer, if applicable quality of service is second threshold or below it. Thus, in the case when the quality of service meets certain minimum conditions, image quality can be maintained, albeit with a reduced throughput image, and in the case of extreme degradation of the line can still be made local or Autonomous decrease data transfer rate with a reduction of image quality. Thus, there is no need to interrupt data collection procedures. Eleventh aspect can be combined with the tenth dimension.

In the twelfth aspect of the present invention system is a system of magnetic resonance imaging, and the control device is configured to speed control data collection, at least one of the device by at least one of the changes subsequent cycles of collection and transmission of data of the survey, and change the current applied to the coil of the gradient of the magnetic field magnetic resonance imaging. It provides other opportunities for reducing the subsequent requirements for bandwidth by reducing the speed of data collection that allows for continuous data transmission, despite the decline in the quality of service. Twelfth aspect can be combined with the tenth and eleventh aspects.

In the thirteenth aspect of the present invention are presented the way. The method contains the steps that provide collection of survey data transmit data through communication lines, and also adapt the data rate of the survey based on available quality of the service line. Thus, it can be achieved the maximum possible data transmission rate for the given conditions of communication. Consequently, available lines of communication may improve its performance. Namely, it is possible to optimize data transfer in real available as a service. Additionally, there is no need to interrupt data collection procedures under unfavourable conditions of communication.

In the fourteenth aspect of the present invention presents software. The software includes a tool software coding ensuring the fulfilment of a computing device, the stages of way to the thirteenth aspect when the software is implemented on a computing device. Thus, it can be reached the same benefits as when you use a method on the thirteenth aspect.

Additional preferred modifications are determined dependent claims.

BRIEF DESCRIPTION OF DRAWINGS

Figure 1 depicts a schematic diagram illustrating the simplified layout of the approximate system 100 under option exercise. The system of magnetic resonance imaging (MRI) is shown in figure 1. However, the following discussion should be seen as illustrative or representing an example, and not as restrictive. Other applications, such as alternative systems for examination and imaging such as x-ray system.

MRI-scanner 110 may include housing 112, defines in General cylindrical tunnel 114 scanner, inside of which can accommodate object 116 visualization, such as the body of man or animal. Coil 120 to create the basic magnetic field can be placed inside the housing 112. Coil 120 to create the basic magnetic field can be a superconducting coil located in the casing 122 cryogenic tank. Can also be used resistive main magnets. Housing 112 may also contain or support coil 130 of the magnetic field gradient is designed to selectively create gradient of the magnetic field in the tunnel 114 scanner. Housing 112 can optionally contain or support radio frequency (RF) coil 132, such as coil body, the head coil surface coil or other local coil for selective excitation of magnetic resonance. Housing 112 may include cosmetic inner shell 134 defining the tunnel 114 scanner.

Coil 120 to create the basic magnetic field can generate the main magnetic field, Bo, power lines, which aims, in General, parallel to the axis of the cylinder tunnel 114 scanner. The device 140 management, such as the Central control unit, the control unit MR-research controller or MRI, can manage controllers 142 gradient of the magnetic field in order selective excitation coils 130 gradient of the magnetic field, and to control RF-transmitter 144 related to RF-coil 132, polling feed RF excitation pulses on the object 116 visualization. By the electoral management coils 130 to create gradient magnetic fields and RF-coil 132, magnetic resonance can be generated and spatial encoded at least on a certain site interested area of the object 116 visualization. By application of the selected gradient of the magnetic field by means of gradient coils 130 can be viewed selected trajectory in k-space, for example, the trajectory in the Cartesian coordinate system, many radial paths, spiral trajectory, etc.

In the data collection process image device 140 management can control the device 150. The device 150 can be a radio take-up spool, such as wireless MRI coil or a set of such local coils. The device 150 can be located inside the tunnel 114 scanner close to the object 116 visualization or in contact with it. It can be powered by batteries or contain rechargeable battery. While figure 1 shows the only surface coil, in some cases, the practical application can be used many surface coils in the form of a different set any configuration. In addition, the device 150 can be realized with the help of other local coils in addition to the surface of the coil. For example, a device 150 can be a head coil, covering the head, or the coil to the knee joint, etc.

Electronic circuit 156 can be accommodated in the electronics. Although not shown in figure 1, the device can accommodate 150 housing or casing, enclosed in a waterproof layer, and may include the pad, safety belts, etc. or can be configured with regard to the requirements in appearance, safety, convenience for the patient and other considerations.

In the surface coil presented as an example of the structure of 150 to 1, total reliance 152 represents, in General, flat substrate and antenna 154 can represent, for example, tracks, of copper or other conductive tracks formed on the substrate 152. Electronic circuit 156 can reside on the same or in one of the conductors of the antenna 154. In configurations where the antenna 154 determined rings, speed, or other non-planar components, as in the case of, for example, head coil, coil for knee replacement, etc., electronic circuits 156 can appropriately be located directly on one or more components of the antenna, or can be attached to it as a separate structure through appropriate additional support structure.

The device 150 can issue analog or digital optical or electrical signal. This signal can be transmitted to the device 140 management via a wireless or wired connection. For example, you can use the wireless connectivity or infrared. In figure 1 as an example presents a wireless communication link. The signal transmitted by the device 150, can be accepted antenna, an infrared detector or other host element (not shown in figure 1) device 140 management.

The transmitted signal can be received by the device 140 management and dynamically restored (if it was sent in compressed format) to restore MR-signal, MR-samples or MR-data. The device 140 management can demodulate the signal and, if necessary, to perform additional processing to obtain MR-data. MR-data can be stored in the drive 160 MR-data. MR-data can be reconstructed processor 162 reconstruction in the form of an image using the algorithm of reconstruction on the basis of the Fourier transform algorithm of reconstruction on the basis of rear projection filtering or other suitable algorithm of reconstruction of the image. The reconstructed image or images generated by the processor 162 reconstruction can be stored in the drive 164 images and can be displayed on the interface 166 user, stored in a permanent memory, transmitted through a local intranet or the Internet, viewing, to accumulate, to be subjected to manipulation, etc. Interface 166 user can enable the doctor-radiologist, technician or other operator MRI-scanner 110 to communicate with the device 140 control to select, edit, or execution of sequential actions MRI studies.

Described MRI system 100 is only illustrative example. Different versions are available. For example, MRI-scanner 110, as shown in figure 1, is a scanner with a horizontal tunnel. However, it can be used scanners on the merits of any type, including, but not only, scanners with a vertical tunnel, scanners open magnet etc. figure 2 shows the structural diagram illustrating the approximate 200 device under this option implementation. The device is 200 corresponds to the device 150 shown in figure 1. It may contain the first antenna 205 corresponding to the antenna 154 figure 1, block 210 data collection, such as MR-receiver, block 215 adaptation and block 220 data. Additionally, the device is 200 may include block 225 buffering data, such as FIFO memory (FIFO), the control unit 230 buffering, such as FIFO memory, and backup unit 235 management. In addition, this may be provided by the second antenna 240. Components 210-235 correspond to the electronic circuitry 156, shown in figure 1.

The first antenna 205 able to detect MR-signals. Block 210 data collection can handle MR-signals and implement data collection surveys, such as MR-data, based on the detected MR-signal. That is, it can serve as a source of collected MR-data. Processing performed by the block 210 data collection may include digitization or sampled MR-signal compression received MR-samples etc. The collected survey data can be transmitted unit 220 data transfer through communication lines and be accepted by the control device, which is not shown in figure 2 and corresponds to the device 140 management presented on Figure 1. The second antenna 240 can be used to transfer the data. On alternative survey data can be communicated through the first antenna 205, for example, using procedures multiplexing of some type, such as the procedure multiple access split frequency (FDMA) or procedure multiple access time division (TDMA).

Collected data can be buffered in the block 225 buffering of the data before they are transferred through a unit 220 data. Block 225 buffering data can supply information about the fill rate and level. Namely, he may issue fill rate and the level, which is how fast the block 225 buffering data is populated with the data of the survey and the percentage of it has already completed.

Processing and data collection performed by the block 210 data collection can be adjusted or adapted block 215 adaptation. In particular, the data rate of the survey can be adapted on the basis of the available quality of service (QoS), communication lines used to transmit the data. For example, the data transfer rate can be adapted depending on the instantaneous value of available bandwidth and/or the delay time connection line. Block 215 adaptation can be defined as a service through the fill rate and level issued by the unit 225 data buffering. For example, a high level may indicate the low quality of service, since the block 225 buffering data can be filled above the norm, if the bandwidth of the connection line insufficient or its delay time has increased, and therefore the data are delayed in block 225 buffering data in excess of the norm. In addition, high fill rate may indicate the low quality of service, since the block 225 data buffering can be completed more quickly, if the data cannot be transferred to a unit 220 data as fast as usual, due to insufficient bandwidth or large delay time connection line. Even if this is not shown in Figure 2, the block 215 adaptation can be defined as a service through the fill rate and level, issued by the managing unit 230 buffering, as described below.

If available, the quality of service line connection is sufficient, special measures may not be necessary. In this case, these data compression may not be used or can be used lossless compression, i.e. it can be normal mode. Various approaches to reduce the data rate of the survey can be applied in the case, when available, the quality of service is too low, i.e. insufficient. These approaches can be used simultaneously and can be used separately.

The first approach could be to customize the aspect ratio or the degree of compression using the local loop. For example, the compression ratio can be increased when available, the quality of service is reduced. If available, the quality of service exceeds a certain threshold or limit, block 215 adaptation can issue the command to block 210 collect data does not compress or perform lossless compression. If available, the quality of service is equal to a certain limit or below it, block 215 adaptation may issue the command to block 210 data collection on the implementation of compression, suitable for reducing the data rate of the survey, i.e. lossless compression with a higher compression ratio, or even lossy compression that can reduce the data rate.

For example, block 210 data collection may not perform compression, if available, the quality of service exceeds the first limit, and perform lossless or lossy compression, if available, the quality of service is the first limit or below it. In alternative, block 210 data collection can perform lossless compression with certain compression ratio, if applicable quality of service exceeds the first limit, and perform a lossy or lossless compression ratio above a certain ratio, if applicable quality of service well first limit or below it. Additionally, block 210 data collection may not perform compression, if available, the quality of service exceeds the first limit, to perform lossless compression with certain compression ratio, if applicable quality of service is the first limit or below, but above the second limit, and perform lossless compression ratio above a certain compression ratio, or lossy compression, if available, the quality of service is second limit or below it. About the alternative variant, block 210 data collection can perform lossless compression with a certain ratio, if applicable quality of service exceeds the first limit, to perform lossless compression ratio above a certain compression ratio, if available, the quality of service is the first limit or below, but above the second limit, and to perform lossy compression, if available, the quality of service is second limit or below it. In addition, block 210 data collection may not perform compression, if available, the quality of service exceeds the first limit, to perform lossless compression with certain compression ratio, if available quality of service is the first limit or below, but above the second limit, to perform lossless compression ratio above a certain compression ratio, if available, the quality of service is second limit or below, but more than a third of the limit, and perform lossy compression, if available, the quality of service is the third limit or below it.

As described above, there may be multiple operating modes, depending on the available quality of service, with the appropriate boundaries between adjacent working mode. The above described four possible modes and three possible limit. However, this description is only an example. More advanced technology can define more working modes and the respective limits of service quality. For example, there may be multiple operating modes, running lossless compression with different compression ratios, and/or working modes, which are lossy compression with different compression ratios, with corresponding boundaries between adjacent working mode. By defining such additional operating modes and limits, operating mode lossless compression and/or operating mode lossy compression, described above, can be divided into sub-modes.

The first approach has the potential to be Autonomous, i.e. locally applied to the device, 200 without filing any commands from the remote device, such as a device 140 management. It can provide essentially instantaneous decrease in the rate of data transmission. Compression can be applied to the survey data before submitting them from the block 210 data collection unit 225 data buffering. Lossy compression can be done, for example, by removing bits from the survey data, reducing the sampling rate averaged etc. In the 140 device management can enter information about the actual compression ratio, which can be executed later and can be achieved, for example, by sending information about compression in conjunction with the compressed data of the survey. Thus, it can be re-adjusted data collection survey. Such a renewal fee can be set by command from the device 140 management and executed by 210 block for data collection. Additionally, the user can be informed or notified if the threshold image quality is not assured. For example, you may receive a warning message or some audio signal through an interface 166 user.

According to the first alternative, the speed of data collection surveys can be reduced, for example, by closing Windows to collect survey data and, later, if necessary, re-collection of lost data. Namely, block 215 adaptation can issue the command block 210 collect data on closing a window for data collection survey. This may be done in response to the decision taken locally (for example, block 215 adaptation), or the corresponding command from the device 140 management. Thus, the rate of subsequent data transmission can be reduced by collecting smaller survey data. In this connection, measures should be taken to maintain control spin state that is required for MR-imaging. Namely, should ensure the continuation of a sequence MR-pulses. If the window for data collection the survey was closed, it need not be re-used or used again. Mandatory re-use of closed window to collect survey data may depend on the current situation. For example, if you perform a detailed examination of the human body, such as the liver or kidney, it may be necessary to re-use a closed window to collect survey data. In other cases, this need may not exist. The decision on necessity of re-use of closed window to collect survey data can be taken device 140 management, i.e. with the use of global feedback loop.

The second alternative for reducing the speed of data collection may lie in the regulation of the magnetic field gradients and/or time of data collection. One possibility consists in weakening or lower current applied to the coil 130 to create gradient of the magnetic field, while maintaining the control spin state. This can be achieved respectively by management controllers 142 gradient of magnetic field. Namely 140 device management can issue the command controllers 142 gradient of the magnetic field on reducing the supply current to the coil 130 gradient of magnetic field. This can lead to slower excitation of nuclei in the object 116 visualization, and thus a longer cycle of data collection. Thus, to collect a series of survey data may need more time. Therefore, data collection can be slowed down, and the speed of data collection or data transmission rate can be reduced.

Using one or both of the above alternatives, i.e. weakening or reducing the current and/or subsequent flows of data required bandwidth for communication lines can be reduced by increasing the time for scanning without any other side effects. In more complex situations second approach may allow for continuous scanning with a gradual reduction of image quality. Thus, can be provided continuous workflow, eliminating the need to abort system 100 or MRI-scanner 110. The user can be informed about the image quality degradation, for example, by transferring the actual compression ratios at the user level, and instructions about this, for example, the interface 166 user. The image quality may again rise, when available, the quality of service lines of communication will allow to do it.

Global feedback loop can be used to reduce the amount of bandwidth so that the image quality can be maintained, although at a lower bandwidth for the transmission of the image. Local feedback loop in this case can be used only in case of extreme reducing the quality of communication lines. In other words, the device 140 management can reduce the bandwidth of the connection line, when available, the quality of service is less than or equal to the first limit or threshold but above the second limit or threshold. This is achieved by reducing the speed of data transfer, for example, according to the above second option, i.e. by regulating magnetic field gradients and/or synchronization of data collection. On the other hand, block 215 adaptation can perform local or Autonomous decrease the speed of data transfer, if applicable quality of service is second threshold or below it. This is achieved by reducing the speed of data transfer, for example, as described above for the first alternative, i.e. by closing the window for data collection survey.

For example, the additional limit may be lower than the specified limit. If available, the quality of service above a certain limit, it may be sufficient. In this case, special measures may not be necessary. Thus, compression survey data may not run at all, or can perform lossless compression. If available, the quality of service is equal to a certain limit or below, but above the additional limit, it may be insufficient. However, lossless compression with a higher compression ratio or even lossy compression in respect of survey data may be acceptable. Therefore, you may be lossy or lossless compression with a higher compression ratio than in the case of adequate quality of service. Namely, can be used the first approach. If available, the quality of service is an additional limit or below it, it may be insufficient even at maximum compression ratio. Thus, you may use the second approach is to slow down data collection and/or reuse Windows for data collection. For example, block 210 data collection may not perform compression, if available, the quality of service exceeds the first limit, to perform lossless compression, if available, the quality of service is the first limit or below, but above the second limit, do lossy compression, if available, the quality of service is equal to the second limit or below, but above the third limit, and close the window to collect survey data, if available, the quality of service is the third limit or below it. About the alternative variant, the hit rate can be reduced by adjusting the magnetic field gradients and/or synchronize data collection, if applicable quality of service is the third limit or below it. In addition, you can imagine and other schemes. For example, the additional limit may be higher than a certain limit.

Therefore, there is the possibility of using local feedback in the first approach to reduce speed data research by increasing the compression ratio, if such a measure can to achieve adequate quality of service. In that case, when available quality of service is insufficient even at maximum compression, the global feedback according to the second approach can be used to slow the data collection surveys and/or reuse Windows for data collection to reduce data transfer rate.

Block 220 data transfer not only can transfer the data of the survey, but also to take control data through the second antenna 240 or the first antenna 205. These controls can be used to control, for example, block 210 data collection, or block 215 adaptation. They can be transmitted by the control device, such as device 140 management, and can be buffered in a control block 230 buffering before applying them to control. Control unit 230 buffering may issue fill rate and level. That is, he may issue fill rate and the level, which is how fast the control unit 230 buffering is populated with data management and on what percentage of it has already completed.

Backup unit 235 management can ensure the continuation of the work unit 210 data collection or multiple blocks of data collection in the same cycle of data collection, where they stayed until the connection loss. Namely, the standby unit 235 management may assume control if the quality of service lines of communication becomes so low that on-line communication data management can not be accepted. Thus, in this case can be guaranteed a continuous scanning. Management performed backup unit 235 administration may be determined by the data control in the control unit 230 buffering, which were received before the loss of communication, like the way "repetition of the scenario. For example, can be repeated preceding sequence MR-pulses. Thus, it is possible to achieve continuous scanning. Due to the fact that the control unit 230 buffering is already loaded subsequent data management, you can handle, at least with short interruptions of the connection. For alerting systems MR-survey on the potential of the Autonomous management, performed using backup unit 235 management, this management data can be transmitted through the channel of feedback on the system MR-examination, for example, a device 140 management, on the same path, which is used to transfer the data.

Backup unit 235 control can communicate with a block 215 adaptation to choose between 1) full closing Windows to collect survey data (in the case of extreme worsening of the quality of communication lines), 2) perform lossless compression/losses (in the case of moderate deterioration of the quality of communication lines), and (3) normal mode (in case of absence of a deterioration in the quality of communication lines). When using backup unit 235 control, he may resume the use of the (former) box to collect survey data, if the line is not able to deliver the collected survey data and/or data management for the next open the collection of survey data. This may to reduce the data rate without the settlement of the magnetic field gradients and/or synchronize data collection, each of which may change the contents of the image, in particular the contrast of the image, and affect the diagnostic value, other than image quality (SNR and the resolution).

Figure 3 depicts a block diagram representing the base location 300 sample feedback circuits under option exercise. Components 310, 325, 330 and 335 correspond to features 210, 225, 230 and 235, shown in figure 2. Namely, the reference position indicates 310 the unit of data collection or receiver, reference position 325 and 330 denote blocks of data buffering and control unit buffering, employees of "rubber band", and the reference position 335 refers to backup the control unit or the method of control of one or more blocks of data collection or receivers when the service quality becomes so low that at some point the data control from the Central control unit is lost. Reference position 345 indicates valid (wireless) connection with the loss or transfer medium, i.e. the communication line. Reference position 350 refers to the management of the experiment, i.e. the system of data collection, which can control the experiment, such as MR-experiment, and is capable need to slow down to reduce the subsequent requirements for bandwidth data transfer lossy communication environment. This experimental control corresponds to the device 140 management figure 1.

Reference position 335 indicates the local loop, and the reference position 360 denotes a global feedback loop. As is clear from Figure 3, the local loop 355 feedback can last from a block 325 buffering data to a block of 310 data collection. In the local circuit 355 feedback compression method and/or the compression ratio can be determined based on the level and speed of filling issued by 325 unit buffering data and feedback data on a block of 310 data collection. As follows from Figure 3, the global circuit 360 feedback can last from a block 325 data buffering to block 350 experiment control. It partially overlaps the local loop 355 feedback figure 3, as both feedback loop can be used simultaneously. In global circuit 360 feedback measures, at least, will instantly lower the speed of data collection can be determined based on the level and speed of filling issued by 325 unit buffering data and feedback data on the block 350 experiment control to reduce the subsequent requirements for bandwidth.

Figure 4 shows a block diagram of the algorithm, representing the main stages of approximate method under option exercise. The method contains a stage S410, which collect survey data, stage S420, which transmit data through communication lines, as well as the stage S430, which will adapt the data rate of the survey based on available quality of the service line.

Figure 5 shows an example of realization of a variant of implementation based software. Here the device contains 500 block (510) data processing (PU), which can be executed on a single chip or module chip and can be a processor or computing device unit management, which manages on the basis of system software management program, stored in memory 520 (MEM). Team of code called from MEM 520 and loaded into the control block PU 510 to perform processing steps, such as described in connection with Figure 4. Stages processing implemented blocks S410-S430, can be executed on the basis of input data DI and can generate output DO, and the input data DI can meet, for example, some signal, such as MR-signal and the output can DO correspond, for example, parameters configuration block for data collection.

While the present invention was illustrated and described in detail in the drawings and in the preceding description, such explanation and description should be viewed as illustrative or given as an example and not impose restrictions. The invention is not limited to those disclosed by way of the implementation. For example, considered the decision on adaptation data rate described specifically in respect of MRI systems that use wireless MRI coil. However be aware that the invention can be used for other types of systems that use wireless communication, for example, alternative types of systems for the examinations or imaging such as x-ray system. It can be used even in other fields and in the wired connection.

For practical use of the claimed invention specialists in a given field of technology will be able to see and realize the possible changes of the open version of the implementation based on the study of drawings, descriptions and accompanying of the claims.

In the claims, the word "contain" does not exclude the existence of other elements or phases, and the singular excludes the existence of many. The only processor or other unit can perform the function of several blocks listed in the claims. The fact that certain units listed in differing dependent claims, does not mean that the Union of these units cannot be used with advantage.

The software is able to control the processor to implement the declared characteristics can be stored/disseminated in an appropriate environment, such as optical storage environment or solid-state environment, delivered jointly with other hardware or as part of it, but may also spread in other forms, for example, through the Internet or other wireless or wired telecommunication systems. It can be used in conjunction with the new system, such as MRI system, or other visualization system, but can also be used in refining or improving existing systems to ensure the possibility of realization of the declared characteristics.

Software for computing device may contain the code of the software to run, for example, the stages of data processing, such as described in connection with Figure 4, where a computer software product works with the computer. Computer software product may optionally contain a machine-readable medium which contains the code of the software, such as optical storage environment or solid-state environment.

Any reference marks in the claims shall not be construed as limiting the amount of its claims.

1. Device (150, 200) data containing: bloc (156; 210; 310) data collection, configured to collect survey data; bloc (156; 220) communication configured to data of the survey by line (345) communication and reception of information management through the communication line; bloc (156; 215) adaptation configured with the possibility of adapting the data transfer rate of the survey based on available quality of service lines of communication, with the mentioned block of data collection and/or referred to block adaptation configured to management on the basis of information management.

2. The device of claim 1 in which the unit of data collection configured with the possibility of compression of the data, and the block adaptation configured to adapt the degree of compression.

3. The device of claim 1 in which the unit adaptation configured to command block collection data on the failure of compression or perform lossless compression survey data, if available, the quality of service exceeds a certain limit, and command the unit of data collection to perform lossless compression with a higher compression ratio than in the case, when available quality service exceeds a certain limit, or compression of the data loss, if applicable quality of service equal to a certain limit or below it.

4. The device of claim 1 in which the unit adaptation configured to adapt the speed of the data collection unit of data collection.

5. The device of claim 1 in which the unit adaptation configured to command the unit of data collection on narrowing at least one window to collect survey data.

6. The device of claim 1 in which the unit adaptation configured to adapt the data compression ratio examination, if applicable quality of service is the first limit or below it, and adapt speed data acquisition unit data collection, if applicable quality of service is second limit or below it.

7. The device of claim 1, further comprising: bloc (156; 225; 325) data buffering, configured to buffer the data inspection and issuing data fill rate and level, with a block of data transmission configured to transfer buffered survey data, the block adaptation configured to determine the available quality of service based on the fill rate and level issued by a block of data buffering.

8. The device of claim 1, further comprising: a control block (156; 230; 330) buffering, configured to buffering received information management and issuance fill rate and level; and the standby unit (156; 235; 335) management, configured to determine the available quality of service based on the fill rate and filling level, issued by the block data buffering, setting, if available, the quality of service below the limit of redundancy, and unit control data collection, if the establishment has a positive result, and the unit of data collection configured to management on the basis of buffered information management.

9. The device of claim 1, representing the wireless coil (150) for magnetic resonance imaging.

10. Data transmission system, containing: at least one device (150; 200) by any of the preceding paragraphs; and the device (140; 350) management configured with the ability to transfer information management on at least one of the mentioned device and receive survey data from at least one of the mentioned devices.

11. The system of claim 10, in which the control device is configured to reduce bandwidth if available, the quality of service is the first threshold or below it, and the block adaptation configured to perform a local decrease in speed of data transfer, if applicable quality of service is second threshold or below it.

12. The system of claim 10 representing system (100) magnetic resonance imaging, and the control device is configured to control the speed of data collection, at least one of the mentioned devices by at least one of the changes subsequent cycles collection and transfer survey data and changes to the current applied to the coil (130) the gradient of the magnetic field magnetic resonance imaging.

13. A data transmission method that contains the time that: carry (S410) data collection surveys; transmit (S420) survey data through communication lines; and adapt (S430) data rate survey based on the available quality of the service line.

14. Machine-readable medium, containing a computer program that has a means of coding, which when executed encourages computing device to perform the steps of how to transfer data on item 13.