CN205720622U - Local coil assembly and MRI system link for MRI - Google Patents
Local coil assembly and MRI system link for MRI Download PDFInfo
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- CN205720622U CN205720622U CN201620274086.1U CN201620274086U CN205720622U CN 205720622 U CN205720622 U CN 205720622U CN 201620274086 U CN201620274086 U CN 201620274086U CN 205720622 U CN205720622 U CN 205720622U
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Abstract
The utility model discloses a kind of local coil assembly for MRI and MRI system link, including several coil units, insulation crust and some built-in MR signal transmission lines, described MR signal transmission line connects with corresponding coil unit, described coil unit forms coil array, it is characterized in that, described local coil assembly also includes attenuator, power splitter, some built-in LC signal transmission lines and matrix switch, described attenuator is connected with power splitter, described power splitter is connected with built-in LC signal transmission line, described built-in MR signal transmission line, built-in LC transmission line is electrically connected with adapter by matrix switch；This utility model receives channel failure detection link by increasing local coil, and this fault detect link does not affect the collection to magnetic resonance signal, can be detected again the connection state of each passage receiving link by this local coil assembly.
Description
[technical field]
This utility model relates to mr imaging technique, is specifically related to a kind of link failure detection technology for magnetic resonance system.
[background technology]
Magnetic resonance, also referred to as nuclear magnetic resonance (Magnetic Resonance Imaging, MRI), spin imaging (spinimaging), NMR (Nuclear Magnetic Resonance)-imaging (Nuclear Magnetic Resonance Imaging, NMRI), it is the another major progress of Medical Imaging after CT.Since the eighties is applied, it is developed at a terrific speed.Its ultimate principle is to be placed in by human body in special magnetic field, and after measurand is placed in magnetic field, its internal hydrogen atom can be polarized.With hydrogen nuclei in radio frequency pulse excitation human body, cause hydrogen nuclei to resonate, and absorb energy.After stopping radio-frequency pulse, hydrogen nuclei sends electric signal by characteristic frequency, and is discharged by the energy of absorption, is included by external receptor, obtains image after electronic computer processes.
The quantity of information that MRI provides is not only more than the many Imagings of other in Medical Imaging, and is different from existing Imaging, and therefore, it has the biggest potential superiority to the diagnosis of disease.Owing to it can directly make the body tomographic image on transverse section, sagittal plane, coronalplane and various inclined-plane；And without ionizing radiation, body is not had harmful effect, thus is used more and more at medical domain.
The data link of MRI system, for the transmission of magnetic resonance signal, in order to ensure the reliability of data transmission, needs to detect it.At present magnetic resonance reception link is detected mainly service engineer the hardware module and circuit that receive link are carried out investigation one by one and test, or the standalone tool of the similar Service plug of exploitation and sequence carry out the detection to link, the former needs service engineer to have the understanding of link modules function of skilled magnetic resonance theoretical basis and magnetic resonance system, detect time-consuming and the most convenient, the latter needs to develop an independent Service plug instrument, and cost increases and carries inconvenience.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of local coil assembly for MRI and MRI system link, and it can complete the collection of magnetic resonance signal and have the function of magnetic resonance signal linkage fault detection.
This utility model is to solve above-mentioned technical problem to the technical scheme is that a kind of local coil assembly for MRI, including several coil units, shell and some built-in MR signal transmission lines, described MR signal transmission line connects with corresponding coil unit, described coil unit forms coil array, described local coil assembly also includes attenuator, power splitter, some built-in LC (local coil) signal transmission lines and matrix switch, described attenuator is connected with power splitter, described power splitter is connected with built-in LC signal transmission line, described built-in MR signal transmission line, built-in LC transmission line is electrically connected with adapter by matrix switch.
Preferably, described built-in MR signal transmission line is identical with the quantity of built-in LC signal transmission line.
Preferably, also including that pin connector, described pin connector include several the first metal end, the sub and built-in MR signal transmission line of described several the first metal ends or built-in LC signal transmission line are electrically connected by matrix switch one_to_one corresponding.
Preferably, also include that pin connector, described pin connector include that the second metal terminal, described second metal terminal are connected with described attenuator (input).
This utility model the technical scheme is that a kind of MRI system link for solving above-mentioned technical problem, it is characterized in that including: MR signal transmission link, including for receiving the coil unit of magnetic resonance signal, radio-frequency (RF) power amplification unit, described coil unit, radio-frequency (RF) power amplification unit are sequentially connected with；LC (local coil) signal transmission link, including attenuator, power splitter, described attenuator, power splitter are sequentially connected with；MR signal/LC signal common transmitted link, including matrix switch, adapter and reception link, and described matrix switch, adapter and reception link are sequentially connected with；Described MR signal transmission link electrically connects with described matrix switch with LC signal transmission link.
Preferably, inside described coil unit, radio-frequency (RF) power amplification unit, attenuator, power splitter and matrix switch are arranged in insulation crust inside or the electronic component kit of central area that is concentrated arranged on insulation crust.
Preferably, described adapter is arranged in the outside of described insulation crust.
Preferably, described reception link includes examinating couch communication unit, receives channel selection unit, A/D signal gathering unit.
Preferably, described reception channel selection unit is provided with the input port that can mate with described adapter.
Preferably, described adapter includes the first metal end and the second metal terminal, described the first metal end and MR signal/LC signal common transmitted link electrical connection, and described second metal terminal is electrically connected with described attenuator.
This utility model contrast prior art has following beneficial effect: this utility model receives channel failure detection link by increasing local coil, and this fault detect link does not affect the collection to magnetic resonance signal, the connection state of each passage receiving link can be detected again by this local coil assembly, at the same time it can also be calculate each diversity receiving link channel gain.Avoid service engineer to receiving each module of link and receiving the difficulty investigated one by one of circuit, also avoid service engineer to carry independent service plug simultaneously and detect instrument, service engineer has only to, to specific sequence scanning, there is fault according to the diversity of the radiofrequency signal data of each reception channel reception it may determine which receives the link of passage.Engineer has only to just the connection state of whole reception link to be detected by this local coil assembly.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the local coil assembly of this utility model embodiment；
Fig. 2 is the circuit theory diagrams of the MRI system link of this utility model embodiment；
Fig. 3 is the structural representation of adapter.
[detailed description of the invention]
The utility model will be further described with embodiment below in conjunction with the accompanying drawings.
nullAs Figure 1-3，This utility model is used for nuclear magnetic resonance (MRI,Magnetic Resonance Imaging) an embodiment of local coil assembly 100 include: several coil units (Coil) C1、C2、C3、C4、C5、C6、Insulation crust 101 and some built-in MR signal transmission line (Line) L21、L22、L23、L24、L25、L26，Described built-in MR signal transmission line L21-L26 connects respectively with corresponding coil unit C1-C6，Described coil unit C1-C6 forms coil array，Described local coil assembly 100 also includes attenuator 3、Power splitter 4、Some built-in LC (local coil) signal transmission line L11、L12、L13、L14、L15、L16 and matrix switch 5，Described attenuator 3 is connected with power splitter 4，Described power splitter 4 is connected with built-in LC signal transmission line L11-L16，Described built-in MR signal transmission line L21-L26、Built-in LC transmission line L11-L16 is electrically connected with pin connector 102 by matrix switch 5.
Described built-in LC signal transmission line L11-L16 and built-in MR signal transmission line L21-L26 can be independent conductor wire or the conducting wire being arranged on circuit board；" built-in " herein refers to that corresponding circuit is coated with by insulation crust 101 and is not exposed to outside.
Further, described built-in MR signal transmission line is identical with the quantity of built-in LC signal transmission line.In other embodiments, the quantity of built-in MR signal/built-in LC signal transmission line can be 2,6,8,12 etc..
Further, described adapter is wire and cable connector, including pin connector 102 and the cable 103 that is connected with pin connector 102.Described plug can be D type plug, square plug.Plug 102 is built-in with several the first metal end 1021 and the second metal terminal 1022.Described several the first metal ends 1021 is electrically connected by matrix switch 5 (input) one_to_one corresponding with built-in MR signal transmission line L21-L26 or built-in LC signal transmission line L11-L16.Concrete, that described the first metal end 1021 is first connected in cable 103 wire (non-label), is then electrically connected with matrix switch 5 (outfan) more respectively by wire.Described matrix switch can be radio-frequency (RF) switch, carries out logic control break-make situation by FPGA.
Further, described second metal terminal 1022 is connected with described attenuator 3 (input).Concrete, that described second metal terminal 1022 is first connected in cable 103 wire (non-label), is then electrically connected with attenuator 3 by wire again.
The first metal end 1021 is for output signal, and the second metal terminal 1022 is for input signal.In embodiment, including six the first metal end 1021, it is divided into two groups, one the second metal terminal 1022 is arranged between the first metal end 1021, the quantity of the first metal end the 1021, second metal terminal 1022 is not limited to above, and the arrangement of the first metal end the 1021, second metal terminal 1022 is also not limited to above.
Further, described cable 103 there also is provided line trap 104.
One in the embodiment of the present invention is used for the system link of nuclear magnetic resonance (MRI), including:
MR signal transmission link, including for receiving the coil unit C1-C6 of magnetic resonance signal, radio-frequency (RF) power amplification unit A1, A2, A3, A4, A5, A6, described coil unit C1-C6, radio-frequency (RF) power amplification unit A1-A6 are sequentially connected with；
LC signal transmission link, is sequentially connected with including attenuator 3, power splitter 4, described attenuator 3, power splitter 4；
MR signal and LC signal common transmitted link, including matrix switch 5, adapter 102 and reception link, and described matrix switch 5, adapter 102 and reception link are sequentially connected with；
Further, described built-in MR signal transmission line L21-L26 is electrically connected with described matrix switch 5 with built-in LC signal transmission line L11-L16.Connect on described built-in MR signal transmission line L21-L26 a radio-frequency (RF) power amplification unit A1-A6 respectively, and radio-frequency (RF) power amplification unit A1-A6 is arranged between coil unit C1-C6 and matrix switch 5.Described power splitter 4 is electrically connected with described matrix switch 5 by LC signal transmission line L11-L16.
Further, described coil unit C1-C6, radio-frequency (RF) power amplification unit A1-A6, attenuator 3, power splitter 4 and matrix switch 5 are arranged in the inside of insulation crust 101 or are concentrated arranged in the same area, concrete, can central area on insulation crust 101, it is provided with electronic component kit 105, can be used for receiving and subtract device 3, power splitter 4 and matrix switch 5.
Further, described adapter 102 is arranged in the outside of described insulation crust 101, is connected with matrix switch 5 by cable 103.
Further, described reception link includes examinating couch communication unit 6, receives channel selection unit 7, collection of simulant signal unit 8, digital signal acquiring unit 9.Described communication unit 6, reception channel selection unit 7, collection of simulant signal unit 8, digital signal acquiring unit 9 pass sequentially through the communications cable (non-label) and connect.Further, described examinating couch communication unit 6, reception channel selection unit 7 are provided with the input port 10,11 that can match with described adapter 102, be connected.The quantity of described input port 10,11 can be one, two or more.
Further, described adapter 102 includes several the first metal end 1021 and at least one second metal terminals 1022, described the first metal end 1021 and MR signal/LC signal common transmitted link electrical connection, described second metal terminal 1022 is electrically connected with described attenuator 3.
Further, described examinating couch communication unit 6 is connected with nuclear magnetic resonance spectrometer.Described nuclear magnetic resonance spectrometer produces a series of control sequence, for MRI scan.Described LC signal is i.e. produced by spectrometer, it is then forwarded to examinating couch communication unit 6 and receives channel selection unit 7, transmitted again to connecting adapter 102 by the transmitting pin (terminal) in input port 10,11 thereon, then attenuator 3 is re-send to, shown in signal transmission path ginseng " dotted arrow ".
Operation principle of the present utility model is as follows: magnetic resonance system link design becomes MRI signal transmission link and two signal transmission paths arranged side by side of LC signal transmission link, LC signal transmission link is for detecting MRI signal transmission link fault, being embodied in can be to connection (reception passage) situation between radio frequency coil selecting unit (TSSU) and examinating couch (PTAB) communication unit, and examinating couch (PTAB) communication unit is to receiving channel selection unit (RCSU) connection (reception passage) situation, and connection (reception passage) situation of RCSU to A/D signal gathering unit carries out connected trouble detection.
Operation principle: set fixing RF small signals by nuclear magnetic resonance spectrometer (sequence control unit), setting radio-frequency coil selects the radiofrequency signal of unit (by matrix switch control) to launch (LCTX) as local coil, this radiofrequency signal is connected with the adapter 102 of local coil assembly by the input port 10 of examinating couch communication unit 6, the attenuator 3 and the power splitter 4 that are then passed through local coil component internal process, the RF small signals of decile are collected after whole reception link (reception passage), signal intensity according to each reception channel acquisition may determine that situation occurs in the link of which reception passage.
This utility model receives channel failure detection link by increasing local coil, and this fault detect link does not affect the collection to magnetic resonance signal, the connection state of each passage receiving link can be detected again by this local coil assembly, at the same time it can also be calculate each diversity receiving link channel gain.Avoid service engineer to receiving each module of link and receiving the difficulty investigated one by one of circuit, also avoid service engineer to carry independent service plug simultaneously and detect instrument, service engineer has only to, to specific sequence scanning, there is fault according to the diversity of the radiofrequency signal data of each reception channel reception it may determine which receives the link of passage.Engineer has only to just the connection state of whole reception link to be detected by this local coil assembly.
Although this utility model discloses as above with preferred embodiment; so it is not limited to this utility model; any those skilled in the art; without departing from spirit and scope of the present utility model; when making a little amendment and perfect, protection domain the most of the present utility model is when with being as the criterion that claims are defined.
Claims (10)
1. the local coil assembly for MRI, including several coil units, shell and some built-in MR signal transmission lines, described MR signal transmission line connects with corresponding coil unit, described coil unit forms coil array, it is characterized in that, described local coil assembly also includes attenuator, power splitter, some built-in LC signal transmission lines and matrix switch, described attenuator is connected with power splitter, described power splitter is connected with built-in LC signal transmission line, described built-in MR signal transmission line, built-in LC transmission line is electrically connected with adapter by matrix switch.
Local coil assembly for MRI the most according to claim 1, it is characterised in that described built-in MR signal transmission line is identical with the quantity of built-in LC signal transmission line.
Local coil assembly for MRI the most according to claim 2, it is characterized in that, also include pin connector, described pin connector includes several the first metal end, and the sub and built-in MR signal transmission line of described several the first metal ends or built-in LC signal transmission line are electrically connected by matrix switch one_to_one corresponding.
Local coil assembly for MRI the most according to claim 1, it is characterised in that also include pin connector, described pin connector includes that the second metal terminal, described second metal terminal are connected with described attenuator.
5. a MRI system link, it is characterised in that including:
MR signal transmission link, including for receiving the coil unit of magnetic resonance signal, radio-frequency (RF) power amplification unit, described coil unit, radio-frequency (RF) power amplification unit are sequentially connected with；
LC signal transmission link, including attenuator, power splitter, described attenuator, power splitter are sequentially connected with；
MR signal/LC signal common transmitted link, including matrix switch, adapter and reception link, and described matrix switch, adapter and reception link are sequentially connected with；
Described MR signal transmission link electrically connects with described matrix switch with LC signal transmission link.
MRI system link the most according to claim 5, it is characterized in that, inside inside that described coil unit, radio-frequency (RF) power amplification unit, attenuator, power splitter and matrix switch are arranged in insulation crust or the electronic component kit of central area that is concentrated arranged on insulation crust.
MRI system link the most according to claim 6, it is characterised in that described adapter is arranged in the outside of described insulation crust.
MRI system link the most according to claim 6, it is characterised in that described reception link includes examinating couch communication unit, receives channel selection unit, A/D signal gathering unit.
MRI system link the most according to claim 8, it is characterised in that described reception channel selection unit is provided with the input port that can mate with described adapter.
MRI system link the most according to claim 9, it is characterized in that, described adapter includes the first metal end and the second metal terminal, described the first metal end and MR signal/LC signal common transmitted link electrical connection, and described second metal terminal is electrically connected with described attenuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274086.1U CN205720622U (en) | 2016-04-05 | 2016-04-05 | Local coil assembly and MRI system link for MRI |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274086.1U CN205720622U (en) | 2016-04-05 | 2016-04-05 | Local coil assembly and MRI system link for MRI |
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| CN205720622U true CN205720622U (en) | 2016-11-23 |
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| CN201620274086.1U Active CN205720622U (en) | 2016-04-05 | 2016-04-05 | Local coil assembly and MRI system link for MRI |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148860A1 (en) * | 2017-02-14 | 2018-08-23 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for attenuation correction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148860A1 (en) * | 2017-02-14 | 2018-08-23 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for attenuation correction |
| US10353006B2 (en) | 2017-02-14 | 2019-07-16 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for attenuation correction |
| US10684327B2 (en) | 2017-02-14 | 2020-06-16 | Shanghai United Imaging Healthcare Co., Ltd. | System and method for attenuation correction |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |