CN203789928U - Electrocardio, respiratory and peripheral gating system for magnetic resonance system - Google Patents
Electrocardio, respiratory and peripheral gating system for magnetic resonance system Download PDFInfo
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Abstract
The utility model provides an electrocardio, respiratory and peripheral gating system for a magnetic resonance system. The electrocardio, respiratory and peripheral gating system comprises an electrocardio sensor connected to the chest of a human body, a respiratory bellyband, a peripheral sensor connected to the pulse of the human body, a gating processing unit, a computer and a spectrometer. The electrocardio sensor, the respiratory bellyband and the peripheral sensor are respectively connected to the gating processing unit, and the gating processing unit is connected to the computer and the spectrometer. The gating processing unit, the computer and the spectrometer are arranged in a space isolated from the magnetic resonance system, and the electrocardio sensor is provided with a shielding outer shell. The gating system further comprises carbon fiber lead wires and carbon fiber electrode plates making contact with the chest of the human body, the input ends of the carbon fiber lead wires are connected to the carbon fiber electrode plates in a three-leading mode, and the output ends of the carbon fiber lead wires are connected to the electrocardio sensor. According to the electrocardio, respiratory and peripheral gating system for the magnetic resonance system, collection equipment for electrocardiograms, breathing and peripheries can be compatible with the magnetic resonance system quite well, and the definition of imaging is improved.
Description
Technical field
This utility model relates to field of medical, more specifically, relates to a kind of electrocardio for magnetic resonance system and breathes periphery door control system.
Background technology
Common detected human body hydrogen nuclear magnetic resonance (MR) signal is a kind of extremely faint signal.In the scanning process of nuclear magnetic resonance (MRI) scanner, launch one time rf pulse sequence, the signal to noise ratio of the human body proton MRI signal obtaining is extremely low, cannot rebuild image clearly.In order to overcome this shortcoming, use image superposition principle, within longer sweep time, a series of rf pulse sequences of scanner repeat its transmission, the second mining MR signal of laying equal stress on, rebuilds piece image through stack.Though improved like this picture quality, but brought new problem: (1) has extended sweep time; (2) in scanning process, require imaging object to remain resting state.Therefore, when heart is carried out to scanning imagery, each time scanning rf pulse sequence appear at randomly cardiac cycle not in the same time, the MR signal obtaining is from the different conditions in process aroused in interest, and the cardiac image being obtained by non-homomorphic signal stack repeatedly like this will occur serious motion artifacts.
The effective ways of rejection image motion artifacts are to make the transmitting of rf pulse sequence and the collection of MR signal all be synchronized with the motion of heart.To extend although it is so imaging time, but can realize the same phase point repeated acquisition MR signal in process aroused in interest, thereby obtain cardiac image clearly.
Electrocardiogram acquisition technology has been widely applied to the medical treatment situations such as cardiac diagnosis, cardiac monitoring, family health care.At present, ecg signal acquiring is transferred to electrocardiogram acquisition equipment by conducting wire by electrocardiosignal conventionally, through filtering and amplifying circuit, the noises such as filtering direct current offset, power frequency interference, high frequency, then through AD sampling, obtains digital signal, and then signal is processed.By methods such as difference threshold value, template matching, wavelet transformations, magnetic resonance angiography (QRS) wave group is detected.Traditional electrocardiogram acquisition technology is very ripe, can provide perfect solution in general occasion.But be applied in magnetic resonance system, but run into new challenge.The interference bringing due to the very strong main field of magnetic resonance and gradient magnetic, make general electrocardio, Breath collection equipment under magnetic resonance environment, be difficult to extract cleaner electrocardio, breath signal, and common electrocardio, Breath collection equipment can affect the normal imaging of magnetic resonance.
Utility model content
In order to address the above problem, this utility model provides a kind of electrocardio for magnetic resonance system to breathe periphery door control system.
Comprise and be connected to the EGC sensor (ECGS) of human chest, the breathing bellyband that is connected to human abdomen, the periphery sensor that is connected to human pulse, gate processing unit (GPU), computer and spectrometer according to electrocardio breathing periphery door control system of the present utility model, EGC sensor, breathing bellyband and periphery sensor are connected respectively to gate processing unit, and gate processing unit is connected to computer and spectrometer.Gate processing unit, computer and spectrometer are arranged in the space isolating with magnetic resonance system, and EGC sensor has screening can.Door control system also comprises carbon fiber guiding on line and the carbon fiber electrically pole piece contacting with human chest, and the input of carbon fiber guiding on line is connected to carbon fiber electrically pole piece in three modes of leading, and the outfan of carbon fiber guiding on line is connected to EGC sensor.
According to an aspect of the present utility model, EGC sensor comprises: feedthrough capacitor, and feedthrough capacitor is connected with carbon fiber guiding on line by electrocardiosignal input interface; Differential amplification module, described differential amplification module is connected to feedthrough capacitor; The composite module that leads, described in the composite module that leads be connected to differential amplification module; Electrocardiosignal amplification filtering module, described electrocardiosignal amplification filtering module is connected to the composite module that leads; Pulse width modulation module, described pulse width modulation module is connected to electrocardiosignal amplification filtering module; With ECGS optical signal sending module and ECGS optical signal receiving module, the ECGS electricity that ECGS optical signal sending module has for converting the electrical signal to optical signal turns optical signal module, the ECGS light that ECGS optical signal receiving module has for optical signal being converted to the signal of telecommunication turns signal module, the input of ECGS optical signal sending module is connected to described pulse width modulation module, the outfan of ECGS optical signal sending module and the input of ECGS optical signal receiving module are connected respectively to gate processing unit, thereby make EGC sensor and the two-way communication of gate processing unit.
Battery can be arranged in screening can to provide electric power to EGC sensor.
Alternatively, EGC sensor can also comprise energy supply control module.The input of energy supply control module is connected to ECGS optical signal receiving module, and the outfan of energy supply control module is connected to the composite module that leads.
It can be fiber optic emitter that electricity turns optical signal module.
According to another aspect of the present utility model, gate processing unit comprises GPU optical signal receiving module, GPU optical signal sending module, pulsewidth demodulation module, electrocardiosignal amplification filtering module, electrocardiosignal gain amplifying circuit module able to programme, analog-digital converter (ADC), spectrometer level switch module, serial communication driver module and processor.The light that GPU optical signal receiving module has for optical signal being converted to the signal of telecommunication turns signal module, and the electricity that GPU optical signal sending module has for converting the electrical signal to optical signal turns optical signal module.GPU optical signal receiving module is connected to EGC sensor in the outside of gate processing unit, is connected successively by transmission line in the inside of gate processing unit with pulsewidth demodulation module, electrocardiosignal amplification filtering module, electrocardiosignal gain amplifying circuit module able to programme, analog-digital converter and processor.Processor is connected to computer by serial communication driver module, and is connected to spectrometer by spectrometer level switch module.
Gate processing unit also comprises sensor and breath signal amplification filtering module.The input of sensor is connected to breathing bellyband by trachea, and the outfan of sensor is connected to breath signal amplification filtering module, and breath signal amplification filtering module is connected to analog-digital converter.
Gate processing unit also comprises periphery photoelectric switching circuit module, periphery signal amplification filtering module and periphery signal gain amplifying circuit module able to programme.Periphery photoelectric switching circuit module is connected and two-way communication with periphery sensor in the outside of gate processing unit via periphery module interface, is connected successively by transmission line in the inside of gate processing unit with periphery signal amplification filtering module, periphery signal gain amplifying circuit module able to programme, analog-digital converter and processor.
Processor can be connected to periphery sensor by periphery photoelectric switching circuit module.
Alternatively, door control unit is provided with analog electrocardiogram signal output interface.The input of analog electrocardiogram signal output interface is connected to pulsewidth demodulation module, and the outfan of analog electrocardiogram signal output interface is connected to the watch-dog that is arranged on door control unit outside.
Door control system can also comprise system interface unit (SIU).Gate processing unit also comprises SIU level switch module, and the input of SIU level switch module is connected to system interface unit, and the outfan of SIU level switch module is connected to processor.
Preferably, analog-digital converter is connected to described processor by serial peripheral interface bus (SPI).
Processor can be microcontroller.
Preferably, EGC sensor and periphery sensor are connected to gate processing unit by optical fiber respectively.
Collecting device and the magnetic resonance system that can realize electrocardio, breathing and periphery according to door control system of the present utility model are well compatible, and the electrocardio gathering, breathing and periphery signal, through processing, are sent to computer.Operator can carry out parameter setting to door control system by computer, and door control system, according to parameter and electrocardio, breathing and the periphery signal set, coordinates accurately Real-time Collection magnetic resonance signal of imaging sequence control spectrometer, thereby improve the definition of imaging.
Brief description of the drawings
Above-mentioned and other side of the present utility model and feature are by from presenting the explanation of embodiment is clear below in conjunction with accompanying drawing, wherein:
Fig. 1 schematically shows the block diagram of breathing periphery door control system according to the electrocardio of this utility model embodiment; And
Fig. 2 schematically shows EGC sensor and the block diagram of the relation of leading.
Detailed description of the invention
Describe with reference to the accompanying drawings illustrative, non-limiting example of the present utility model in detail, be further described breathing periphery door control system according to electrocardio of the present utility model.
Breathe periphery door control system for magnetic resonance testing environment according to electrocardio of the present utility model.For fear of door control system and the medical imaging device of working under forceful electric power, magnetic field condition (for example, MRI system) phase mutual interference, this utility model is placed on the acquisition process part of door control system in an open space of isolating with forceful electric power and the magnetic field environment of magnetic resonance system.
Particularly, Fig. 1 has shown the electrocardio breathing periphery door control system according to this utility model embodiment.Comprise and be connected to the EGC sensor 1 of human chest, the breathing bellyband 14 that is connected to human abdomen, the periphery sensor 15 that is connected to human pulse, gate processing unit 31, computer 32 and spectrometer 34 according to electrocardio breathing periphery door control system of the present utility model.ECGS1, breathing bellyband 14 and periphery sensor 15 are connected respectively to GPU31, and GPU31 is connected to computer 32 and spectrometer 34.GPU31, computer 32 and spectrometer 34 are arranged in the space isolating with magnetic resonance system, to avoid door control system and the mutual interference of magnetic resonance system phase.Preferably, ECGS and periphery sensor are connected to GPU by optical fiber respectively, and optical fiber can alleviate electromagnetic interference.
According to this utility model, ECGS1 has screening can 33, and screening can shield extraneous high frequency radiation and disturb, and makes the strong gradient electromagnetic field of magnetic resonance system and radio frequency electromagnetic field can not disturb EGC sensor, thereby extracts electrocardiosignal clearly.For example, screening can be made of metal.But the material of screening can is not limited to this, can shield electromagnetic and the conventional any material in this area of radio frequency electromagnetic field and can adopt.Door control system of the present utility model also comprises the carbon fiber electrically pole piece 21 and the carbon fiber guiding on line 22 that contact with human chest, as shown in Figure 2.The input of carbon fiber guiding on line 22 is connected to carbon fiber electrically pole piece 21 in the mode of leading, and outfan is connected to ECGS1 by electrocardiosignal input interface.Be connected with human chest with carbon fiber electrically pole piece because ECGS adopts carbon fiber guiding on line, eliminated metal artifacts.
ECGS1 comprises feedthrough capacitor 23, differential amplification module 24, the composite module 25 that leads, electrocardiosignal amplification filtering module 26, pulse width modulation module 27, ECGS optical signal sending module 28 and ECGS optical signal receiving module 30.The ECGS light that ECGS optical signal sending module 28 has for converting the electrical signal to optical signal turns signal module, and the ECGS light that ECGS optical signal receiving module 30 has for optical signal being converted to the signal of telecommunication turns signal module.Feedthrough capacitor 23 is connected with carbon fiber guiding on line 22 by the electrocardiosignal input interface being arranged on ECGS, with on filtering conducting wire, go here and there into High-frequency Interference.In ECGS1, feedthrough capacitor 23, differential amplification module 24, the composite module 25 that leads, electrocardiosignal amplification filtering module 26, pulse width modulation module 27 and ECGS optical signal sending module 28 are sequentially connected according to this by transmission line.As shown in Figure 2, the input of ECGS optical signal sending module 28 is connected to pulse width modulation module 27, the outfan of ECGS optical signal sending module 28 and the input of ECGS optical signal receiving module 30 are connected to GPU by ECGS optical signal transmission interface and ECGS optical signal receiving interface respectively, thereby make ECGS and GPU two-way communication.For example, it can be fiber optic emitter that electricity turns optical signal module, and described fiber optic emitter converts electrical signals to optical signal, and the optical signal of conversion is launched from ECGS1.
The interior battery (not shown) that arranges of screening can 33 of ECGS, to provide electric power to ECGS.According to this utility model, in order to prevent that external power source from entering ECGS, adopt battery powered and battery is shielded from screening can.Like this, can prevent from using external power source time, interfering signal enters in screening can from power line, and then interferes with whole circuit.According to an optional embodiment, ECGS also comprises energy supply control module 29.The input of energy supply control module 29 is connected to ECGS optical signal receiving module, and outfan is connected to the composite module 25 that leads.
Adopt battery powered according to EGC sensor of the present utility model, send the mode power-on of light pulse by GPU.ECGS, in the time not using, can connect GPU to close ECGS power supply by GPU, also ECGS and GPU can be disconnected, and makes the automatic powered-down of ECGS.In addition in ECGS, change, the pulse width of modulation signal by battery undervoltage.The relevant components and parts of ECGS inner core chip level all adopt the components and parts of low-power consumption.Pulse width modulation module 27 is not operated under 50% duty cycle mode in the time of static state, but time width is narrow in the time of low level, and now therefore fiber optic emitter current flowing, to save battery electric quantity, and improves flying power.For example, the battery of 1000mAh, according to using and can use 3 to 5 years in door control system of the present utility model, has been avoided frequent charge or has been changed battery.Therefore, there is low-power consumption according to ECGS of the present utility model.
Next, explanation ECGS is measured to the process of electrocardiosignal and processing measured signal.Electrocardiosignal transfers to feedthrough capacitor 23 from human chest skin through carbon fiber electrically pole piece 21 and carbon fiber guiding on line 22.ECGS1 receives by optical fiber the power on signal that GPU sends over, and opening power makes the energy supply control module 29 of screening can 33 inside start power supply, and sensor circuit is started working.Electrocardiosignal is sent to differential amplification module 24 from feedthrough capacitor 23.Because ECGS adopts three modes of leading, the circuit of differential amplification module 24 can carry out any two points electrocardio electric potential difference to the electrocardiosignal of 3 and subtract each other, and obtains the electrocardio differential signal on three tunnels.One road signal is S1 (t)+N1 (t), and wherein S1 is useful signal, and N1 is noise signal; Another road signal is S2 (t)+N2 (t), and wherein S2 is useful signal, and N2 is noise signal.The Noise Correlation of two paths of signals is more intense, and the phase place of useful signal is due to electrode slice position, and phase place can be contrary.Therefore, after two paths of signals difference, the amplitude of useful signal is the relation being added, | and S1 (t) |+| S2 (t) |.And because the dependency of noise is stronger, after subtracting each other, the amplitude of noise is | N1 (t) | – | and N2 (t) |, dependency is stronger, and after subtracting each other so, the amplitude of noise will be less, thereby obtain comparatively clean electrocardiosignal.The composite module 25 that leads receives the signalization of leading that GPU31 sends over, the amplification filtering module 26 that any road electrocardiosignal of gating enters next stage.Amplification filtering module 26 is after the filtering such as high frequency and direct current offset, obtains comparatively clean electrocardiosignal and send into the pulse width modulation module 27 of next stage.Pulse width modulation module adopts pulse modulation technology, and the pulse width signal that quasi-continuous mould electrocardiosignal is modulated into low and high level enters the ECGS optical signal sending module 28 of next stage.The light of ECGS optical signal sending module 28 turns signal module and converts electrical signals to optical signal, then launches from ECGS1.So far, ECGS has completed the processing of electrocardiosignal.
Describe the composition structure of GPU below, in detail with reference to Fig. 1.GPU31 is provided with GPU optical signal receiving interface, GPU optical signal transmission interface, breath signal input interface, periphery module interface, gate output interface, serial communication interface, external trigger input interface and analog electrocardiogram signal output interface.GPU31 comprises GPU optical signal receiving module 2, GPU optical signal sending module 3, pulsewidth demodulation module 4, electrocardiosignal amplification filtering module 5, electrocardiosignal gain amplifying circuit module 6 able to programme, ADC7, spectrometer level switch module 19, serial communication driver module 10 and processor 9.The light that GPU optical signal receiving module 2 has for optical signal being converted to the signal of telecommunication turns signal module, and the electricity that GPU optical signal sending module 3 has for converting the electrical signal to optical signal turns optical signal module.GPU optical signal receiving module is connected to ECGS in the outside of gate processing unit by GPU optical signal receiving interface, and is connected with pulsewidth demodulation module 4, electrocardiosignal amplification filtering module 5, electrocardiosignal gain amplifying circuit module 6 able to programme, ADC7 and processor 9 successively by transmission line in the inside of gate processing unit.Processor 9 is connected to serial communication driver module 10 in two-way communication mode.For example, processor 9 can be connected with ADC7 by SPI.Serial communication driver module 10 is connected to computer 32 in two-way communication mode by serial communication interface.In addition, processor 9 is connected to spectrometer 34 by spectrometer level switch module 19.Processor can be microcontroller, but is not limited to this, also can adopt the conventional any processor in this area.
GPU sends to ECGS by ECGS optical signal sending module 3 and optical fiber by control signal, and ECGS sends to GPU by ECGS optical signal sending module 28 and optical fiber by the electrocardiosignal after modulation simultaneously.The electrocardio optical signal that GPU turns after the modulation that signal module sends over ECGS by the GPU light in GPU optical signal receiving module 2 is converted to the signal of telecommunication, and modulation signal is carried out to demodulation by pulsewidth demodulator circuit module 4, be reduced into the quasi-continuous electrocardiosignal of mould.Electrocardiosignal after reduction enters electrocardiosignal gain amplifying circuit 6 able to programme through electrocardiosignal amplification filtering module 5, enters ADC7, and analogue signal is quantized into digital signal and enters processor 9.The capacity of resisting disturbance of digital signal is better than analogue signal, and optical signal is insensitive to electromagnetic radiation.Therefore, ECGS is connected with GPU by optical fiber, adopts optical fiber to replace cable transmission signal, has solved to external radiation and by the problem of radiation.Conversion by analogue signal to digital signal, has adopted pulse modulation technology, makes circuit layout simple, thereby is conducive to obtain low-power consumption.
In addition, GPU can also be provided with analog electrocardiogram signal output interface 11.The input of analog electrocardiogram signal output interface 11 is connected to pulsewidth demodulation module 4, and outfan is connected to the watch-dog that is arranged on GPU outside, such as but not limited to oscillograph.In addition, can also comprise SIU35 according to door control system of the present utility model.GPU comprises SIU level switch module 20.The input of this SIU level switch module is connected to SIU35, and outfan is connected to processor 9.
GPU also comprises sensor 12 and breath signal amplification filtering module 13.The input of sensor 12 is connected to and breathes bellyband 14 via trachea by breath signal input interface, to gather breath signal.The outfan of sensor 12 is connected to breath signal amplification filtering module 13, and breath signal amplification filtering module 13 is then connected to ADC7, and then is connected to processor 9.The breath signal that GPU gathers breathing bellyband 14 carries out, after filter and amplification and AD collection, being quantized into digital signal and entering processor 9.Door control system of the present utility model adopts air pressure sensing mode in the time gathering breath signal, realizes the monitoring to breathing state by the variation of a sealing trachea internal gas pressure in forceful electric power and magnetic field environment.The acquisition process part of air pressure is placed in an open space of isolating with forceful electric power and magnetic field environment, is connected and is breathed bellyband and acquisition process part by very thin airway.Can avoid like this magnetic resonance equipment (for example, MRI system) the phase mutual interference of working under door control system and forceful electric power and magnetic field condition, and can reach tens meters because the length of airway is the longest, make the scope of application of the present utility model more extensively, flexibly.
Further, GPU can also comprise periphery photoelectric switching circuit module 16, periphery signal amplification filtering module 17 and periphery signal gain amplifying circuit module 18 able to programme, thereby gathers periphery (pulse) signal.Periphery photoelectric switching circuit module 16 is connected with periphery sensor 15 in the outside of GPU via periphery module interface, and is connected with periphery signal amplification filtering module 17, periphery signal gain amplifying circuit module 18 able to programme, ADC7 and processor 9 successively by transmission line in the inside of GPU.Processor 9 is connected to periphery sensor 15 by periphery photoelectric switching circuit module 16 via periphery module interface.Therefore, periphery sensor 15 can with 16 two-way communications of periphery photoelectric switching circuit module.
Collecting device and the magnetic resonance system that can realize electrocardio, breathing, periphery according to door control system of the present utility model are well compatible, and the electrocardiosignal of collection, breath signal and periphery signal are sent to computer through processing.Operator can carry out parameter setting to door control system by computer, and door control system, according to parameter and electrocardio, breathing and the periphery signal set, coordinates accurately Real-time Collection magnetic resonance signal of imaging sequence control spectrometer, thereby improve the definition of imaging.Particularly, electrocardio, breathing and periphery signal, after AD gathers, enter the processor of GPU.GPU processor can carry out two-way communication with computer 32, both can receive the sequential parameter that host computer sends relevant information had been set, and then ECGS is set, changes the relevant parameter in handling procedure, more rationally, processing signals more flexibly, again can be by reporting parameters such as electrocardiosignal, breath signal, periphery signal waveform and heart rate, breathing rate, pulse frequency, breathing flat zone times to computer 32.GPU both can choose arbitrarily electrocardio, breathing, periphery signal Yi road signal processing, also can choose any two-way or three road signals are processed simultaneously.Processor, according to the setting of relevant parameter, can be worked by output signal control spectrometer, and according to the setting of host computer, the signal of output can be both gate-control signal, can be also triggering signal.
Although exemplary embodiments of the present utility model is illustrated, but obviously it will be appreciated by those skilled in the art that, in the situation that not deviating from spirit of the present utility model and principle, can change, its scope claims with and equivalent in limit.
Claims (14)
1. the electrocardio for magnetic resonance system is breathed periphery door control system, comprise and be connected to the EGC sensor (ECGS) of human chest, the breathing bellyband that is connected to human abdomen, the periphery sensor that is connected to human pulse, gate processing unit (GPU), computer and spectrometer, described EGC sensor, described breathing bellyband and described periphery sensor are connected respectively to described gate processing unit, described gate processing unit is connected to described computer and described spectrometer, it is characterized in that:
Described gate processing unit, described computer and described spectrometer are arranged in the space isolating with described magnetic resonance system;
Described EGC sensor has screening can; And
Described door control system also comprises carbon fiber guiding on line and the carbon fiber electrically pole piece contacting with human chest, the input of described carbon fiber guiding on line is connected to described carbon fiber electrically pole piece in three modes of leading, and the outfan of described carbon fiber guiding on line is connected to described EGC sensor.
2. door control system according to claim 1, is characterized in that, described EGC sensor comprises:
Feedthrough capacitor, described feedthrough capacitor is connected with described carbon fiber guiding on line by electrocardiosignal input interface;
Differential amplification module, described differential amplification module is connected to described feedthrough capacitor;
The composite module that leads, described in the composite module that leads be connected to described differential amplification module;
Electrocardiosignal amplification filtering module, composite module leads described in described electrocardiosignal amplification filtering module is connected to;
Pulse width modulation module, described pulse width modulation module is connected to described electrocardiosignal amplification filtering module; With
ECGS optical signal sending module and ECGS optical signal receiving module, the ECGS electricity that described ECGS optical signal sending module has for converting the electrical signal to optical signal turns optical signal module, the ECGS light that described ECGS optical signal receiving module has for optical signal being converted to the signal of telecommunication turns signal module, the input of described ECGS optical signal sending module is connected to described pulse width modulation module, the outfan of described ECGS optical signal sending module and the input of described ECGS optical signal receiving module are connected respectively to described gate processing unit, thereby make described EGC sensor and the two-way communication of described gate processing unit.
3. door control system according to claim 2, is characterized in that, battery is arranged in described screening can to provide electric power to described EGC sensor.
4. door control system according to claim 3, it is characterized in that, described EGC sensor also comprises energy supply control module, and the input of described energy supply control module is connected to described ECGS optical signal receiving module, and composite module leads described in the outfan of described energy supply control module is connected to.
5. door control system according to claim 2, is characterized in that, it is fiber optic emitter that described electricity turns optical signal module.
6. door control system according to claim 1, is characterized in that:
Described gate processing unit comprises GPU optical signal receiving module, GPU optical signal sending module, pulsewidth demodulation module, electrocardiosignal amplification filtering module, electrocardiosignal gain amplifying circuit module able to programme, analog-digital converter, spectrometer level switch module, serial communication driver module and processor;
The light that described GPU optical signal receiving module has for optical signal being converted to the signal of telecommunication turns signal module, and the electricity that described GPU optical signal sending module has for converting the electrical signal to optical signal turns optical signal module;
Described GPU optical signal receiving module is connected to described EGC sensor in the outside of described gate processing unit, is connected successively by transmission line in the inside of described gate processing unit with described pulsewidth demodulation module, described electrocardiosignal amplification filtering module, described electrocardiosignal gain amplifying circuit module able to programme, described analog-digital converter and described processor; And
Described processor is connected to described computer by described serial communication driver module, and is connected to described spectrometer by described spectrometer level switch module.
7. door control system according to claim 6, it is characterized in that, described gate processing unit also comprises sensor and breath signal amplification filtering module, the input of described sensor is connected to described breathing bellyband by trachea, the outfan of described sensor is connected to described breath signal amplification filtering module, and described breath signal amplification filtering module is connected to described analog-digital converter.
8. door control system according to claim 6, is characterized in that:
Described gate processing unit also comprises periphery photoelectric switching circuit module, periphery signal amplification filtering module and periphery signal gain amplifying circuit module able to programme; And
Described periphery photoelectric switching circuit module is connected and two-way communication with described periphery sensor in the outside of described gate processing unit via periphery module interface, is connected successively by transmission line in the inside of described gate processing unit with described periphery signal amplification filtering module, described periphery signal gain amplifying circuit module able to programme, described analog-digital converter and described processor.
9. door control system according to claim 8, is characterized in that, described processor is connected to described periphery sensor by described periphery photoelectric switching circuit module.
10. door control system according to claim 6, it is characterized in that, described door control unit is provided with analog electrocardiogram signal output interface, the input of described analog electrocardiogram signal output interface is connected to described pulsewidth demodulation module, and the outfan of described analog electrocardiogram signal output interface is connected to the watch-dog that is arranged on described door control unit outside.
11. door control systems according to claim 6, it is characterized in that, described door control system also comprises system interface unit (SIU), described gate processing unit also comprises SIU level switch module, the input of described SIU level switch module is connected to described system interface unit, and the outfan of described SIU level switch module is connected to described processor.
12. door control systems according to claim 6, is characterized in that, described analog-digital converter is connected to described processor by serial peripheral interface bus.
13. door control systems according to claim 6, is characterized in that, described processor is microcontroller.
14. door control systems according to claim 1, is characterized in that, described EGC sensor and described periphery sensor are connected to described gate processing unit by optical fiber respectively.
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| CN201420050601.9U CN203789928U (en) | 2014-01-26 | 2014-01-26 | Electrocardio, respiratory and peripheral gating system for magnetic resonance system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104287769A (en) * | 2014-10-13 | 2015-01-21 | 沈阳东软医疗系统有限公司 | PET/CT (positron emission tomography / computed tomography) equipment-based exterior gating signal detecting device and method |
| CN104799858A (en) * | 2014-01-26 | 2015-07-29 | 包头市稀宝博为医疗系统有限公司 | ECG (electrocardio), breathing and periphery portal control system for magnetic resonance system |
| CN105894767A (en) * | 2015-12-16 | 2016-08-24 | 沈阳东软医疗系统有限公司 | Magnetic resonance attachment signal sending method, transmission method, device and system |
| CN108057176A (en) * | 2017-11-08 | 2018-05-22 | 深圳市大耳马科技有限公司 | A kind of method, apparatus and system for generating medicine radiotherapy apparatus control signal |
| CN110037700A (en) * | 2019-05-14 | 2019-07-23 | 上海东软医疗科技有限公司 | A kind of acquisition methods, device and the magnetic resonance equipment of compound gate-control signal |
| WO2024056650A1 (en) * | 2022-09-14 | 2024-03-21 | Koninklijke Philips N.V. | Voltage-to-frequency electrocardiogram measurement node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799858A (en) * | 2014-01-26 | 2015-07-29 | 包头市稀宝博为医疗系统有限公司 | ECG (electrocardio), breathing and periphery portal control system for magnetic resonance system |
| CN104287769A (en) * | 2014-10-13 | 2015-01-21 | 沈阳东软医疗系统有限公司 | PET/CT (positron emission tomography / computed tomography) equipment-based exterior gating signal detecting device and method |
| CN104287769B (en) * | 2014-10-13 | 2016-10-05 | 沈阳东软医疗系统有限公司 | A kind of outside gate signal supervisory instrument based on PET/CT equipment and method |
| CN105894767A (en) * | 2015-12-16 | 2016-08-24 | 沈阳东软医疗系统有限公司 | Magnetic resonance attachment signal sending method, transmission method, device and system |
| CN108057176A (en) * | 2017-11-08 | 2018-05-22 | 深圳市大耳马科技有限公司 | A kind of method, apparatus and system for generating medicine radiotherapy apparatus control signal |
| CN110037700A (en) * | 2019-05-14 | 2019-07-23 | 上海东软医疗科技有限公司 | A kind of acquisition methods, device and the magnetic resonance equipment of compound gate-control signal |
| CN110037700B (en) * | 2019-05-14 | 2023-09-05 | 上海东软医疗科技有限公司 | Method and device for acquiring composite gating signal and magnetic resonance equipment |
| WO2024056650A1 (en) * | 2022-09-14 | 2024-03-21 | Koninklijke Philips N.V. | Voltage-to-frequency electrocardiogram measurement node |
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