CN211478629U - Magnetic resonance equipment of health data supervision platform - Google Patents
Magnetic resonance equipment of health data supervision platform Download PDFInfo
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- CN211478629U CN211478629U CN201921953020.5U CN201921953020U CN211478629U CN 211478629 U CN211478629 U CN 211478629U CN 201921953020 U CN201921953020 U CN 201921953020U CN 211478629 U CN211478629 U CN 211478629U
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- magnetic resonance
- radio frequency
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- health data
- supervision platform
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Abstract
The utility model provides a magnetic resonance equipment of health data supervision platform, including the radio frequency power amplifier, it is connected with a radio frequency receiving and dispatching dual-purpose type probe directly on it, this radio frequency receiving and dispatching dual-purpose type probe includes a probe shell and establishes the coaxial interface on the probe shell, the probe shell in-connection has two impedance transformation circuits, first impedance transformation circuit comprises first inductance, second inductance, the first electric capacity of establishing ties in proper order, the both ends of second inductance are connected with second electric capacity, the third electric capacity of parallel ground connection; the first impedance transformation circuit is connected with a second impedance transformation circuit. The utility model has the dual functions of receiving and transmitting, is effectively connected with the magnetic resonance equipment, has high signal-to-noise ratio and can obtain good signals; the measurement of the static magnetic field intensity can be performed without a specialized magnetic field measuring device by utilizing the existing function of the magnetic resonance device.
Description
Technical Field
The utility model relates to a health data supervises platform, especially a receive that is arranged in this platform permanent magnetism type magnetic resonance equipment's shimming in-process to measure magnetostatic field intensity and uses concurrently probe.
Background
The health data supervision platform is mainly oriented to an information system of each department of medical and health institutions and basic medical and health institutions of medical and health institutions, and a management department of the medical and health institutions realizes interconnection and intercommunication of health information and data sharing, accelerates collaboration of various medical and health service services at all levels, and gradually improves real-time and efficient comprehensive health management and dynamic supervision of the medical and health services. The platform is compatible with a plurality of devices, one of which is a magnetic resonance device.
The magnetic resonance equipment is a medical imaging equipment which utilizes the characteristic of atomic nuclear spin motion, generates signals after being excited by radio frequency pulses in an external magnetic field, detects the signals by a detector, inputs the signals into a computer, and displays images on a screen through processing and conversion. The magnetic resonance imaging equipment comprises a magnet for generating a magnetic field and a magnet power supply, a gradient field coil and a gradient field power supply, a radio frequency transmitting/receiving machine, a system control and data processing computer, an imaging operation and image analysis workbench, a movable examination bed and the like.
The magnet that generates the magnetic field is the heart of the MR imaging system. According to the different properties of the magnet, the medical magnetic resonance imaging equipment is divided into permanent magnet type magnetic resonance equipment, normal conducting type magnetic resonance equipment and superconducting type magnetic resonance equipment. At present, in the shimming process of the static magnetic field of the permanent magnet type magnetic resonance, a method of directly connecting a radio frequency receiving probe to a magnetic resonance device for measurement is also widely used, except for using a professional magnetic field measuring instrument. The receiving probe mainly comprises a radio frequency receiving coil and an aqueous solution sample arranged in the receiving coil. In order to acquire the MR signals released after the spin protons in the solution in the probe are excited by external energy, the radio frequency irradiation coil of the magnetic resonance apparatus must be required to function properly. Therefore, in some cases, it is necessary to completely remove the rf coils fixed to the magnetic poles of the magnet circuit, and attach small magnetic pieces or iron pieces to the two magnetic pole sides of the magnet circuit for shimming, so that the probe cannot be used.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of current acceptance type radio frequency probe can't work under the condition that does not have outside radio frequency magnetic field, provide a radio frequency and receive, the emission is with the same use type probe, and direct and health data supervise the magnetic resonance equipment of platform and be connected the use, and this probe not only possesses current radio frequency and receives the function, can be connected with magnetic resonance equipment's radio frequency power amplifier simultaneously, provides the necessary outside radio frequency magnetic field of spin proton in the excitation static magnetic field.
The purpose of the utility model is realized through the following technical scheme:
a magnetic resonance device of a health data supervision platform, comprising a radio frequency power amplifier, characterized in that: the radio frequency power amplifier is directly connected with a radio frequency transceiving dual-purpose probe, the radio frequency transceiving dual-purpose probe comprises a probe shell and a coaxial interface arranged on the probe shell, two impedance transformation circuits are connected in the probe shell, the first impedance transformation circuit is sequentially composed of a second inductor, a first inductor and a first capacitor which are connected in series, and two ends of the second inductor are connected with a second capacitor and a third capacitor which are connected in parallel and grounded; the first impedance conversion circuit is connected with a second impedance conversion circuit, and the second impedance conversion circuit is formed by a first circuit formed by a first adjustable capacitor and a coil which are connected in series and connected in parallel with a second adjustable capacitor.
Preferably, a receiving/transmitting switch unit is further connected to the coaxial interface of the probe, the receiving/transmitting switch unit is connected to the probe through a coaxial cable, the receiving/transmitting switch unit is composed of a radio frequency input end, a first resistor, a cross diode and a cable which are sequentially connected in series, and two ends of the first resistor are connected with a second resistor and a third resistor which are connected in parallel and grounded.
Preferably, the cable is a quarter-wave cable.
Preferably, NiCl containing paramagnetic ions is arranged in the coil2•6H2And (4) O aqueous solution.
Preferably, the phase | θ | of the first impedance transformation circuit satisfies 180 °, and | T/R | is less than or within 0.4 dB.
Preferably, the input impedance and phase of the second impedance transformation circuit are equal to the input impedance and phase of the rf power amplifier.
Preferably, the input impedance is 200 ± 20 Ω and the phase is 0 ± 30.
The beneficial effects of the utility model are mainly embodied in that: the radio frequency receiving and transmitting probe has the double functions of receiving and transmitting, is directly and effectively connected with the magnetic resonance equipment of a health data supervision platform, has high signal-to-noise ratio and can obtain good signals. In the case where a professional magnetic field measuring apparatus is not available, the static magnetic field intensity can be measured by utilizing the existing function of the magnetic resonance apparatus. The method is particularly suitable for the installation operation link of the magnetic resonance equipment, and can greatly reduce the investment of the after-sale installation instruments.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1: the circuit schematic of the utility model.
Detailed Description
The utility model discloses a health data supervises magnetic resonance equipment of platform, including radio frequency power amplifier, the direct connection has a type probe is used in radio frequency receiving and dispatching on it, type probe is used in radio frequency receiving and dispatching includes a probe shell, and sets up the coaxial interface on the probe shell, probe shell in-connection has two impedance transformation circuits.
As shown in fig. 1, the first impedance transformation circuit is sequentially composed of a first inductor L1, a second inductor L2, and a first capacitor C1 connected in series, and a second capacitor C2 and a third capacitor C3 connected in parallel to ground are connected to two ends of the second inductor L2; the first impedance conversion circuit is connected with a second impedance conversion circuit, and the second impedance conversion circuit is a first circuit formed by a first adjustable capacitor C4 and a coil 5 which are connected in series and is connected with a second adjustable capacitor C5 in parallel. A NiCl containing paramagnetic ions is arranged in the coil 52•6H2And (4) O aqueous solution.
Still be connected with a receipt/transmission change over switch unit on the coaxial interface of probe, receive/transmission change over switch unit and probe between through coaxial line connection, receive/transmission change over switch unit comprises radio frequency input RF, first resistance R1, cross diode 7, the cable conductor that connects in series in proper order, the both ends of first resistance R1 are connected with second resistance R2, third resistance R3 that connect in parallel ground, the cable conductor be quarter wavelength cable conductor 8.
The utility model provides an inductance and adjustable electric capacity all are used for the matching adjustment of impedance. The first impedance transformation circuit adjusts the first inductor L1 and the second inductor L2 so that the phase | theta | of the first impedance transformation circuit satisfies 180 DEG and | T/R | is less than or equal to 0.4 dB.
The following brief description is the working principle of the utility model:
the utility model discloses a concurrently use type probe is received and dispatched to radio frequency for the input impedance of magnetic resonance equipment's preamplifier is 200 + -20 omega, and phase place 0 + -30, in order to make the work of received magnetic resonance equipment MRI signal lossless, accessible second adjustable electric capacity C5 is adjusted the input impedance of second impedance conversion circuit to 200 + -20 omega, within the 0 + -30 scope of phase place.
The utility model discloses a power amplifier's output impedance for magnetic resonance equipment requires to be 50 omega 5 omega, and 0 +/-30 of phase place, and the inside first adjustable electric capacity C4 of accessible probe adjusts the impedance of probe monomer portion to 50 +/-5 omega, within 0 +/-30 of phase place.
The utility model discloses a receive/launch switch unit's lambda/4 wavelength cable conductor 8 plays the isolation. When a radio frequency excitation signal is input, the cross diode 7 is in a conducting state, resonates after reciprocating through the lambda/4 wavelength cable 8, the output impedance of the cross diode approaches infinity, and an MRI signal output channel is in an open state.
When the coil 5 receives an MRI signal, a radio frequency excitation signal of the power amplifier is turned off, a small signal induced in the receiving coil cannot conduct the cross diode 7, and the MRI signal is directly output through the lambda/4 wavelength cable 8. At this time, the input impedance thereof is 50 Ω which is an equivalent value of the probe unit, and the received MRI signal can be output to the preamplifier.
By upgrading various medical equipment, a national health supervision platform is built, and secondary and tertiary hospital data monitoring, public health data monitoring and basic medical data monitoring services are provided. The management and the assessment of the workload and the service quality of medical services and public health services are realized, the scientification, the standardization and the refinement of the operation supervision and the performance assessment of medical institutions are promoted, and the operation management efficiency and the operation management quality are improved.
The present invention has various specific embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of the present invention.
Claims (7)
1. A magnetic resonance device of a health data supervision platform, comprising a radio frequency power amplifier, characterized in that: the radio frequency power amplifier is directly connected with a radio frequency transceiving probe, the radio frequency transceiving probe comprises a probe shell and a coaxial interface arranged on the probe shell, two impedance transformation circuits are connected in the probe shell, the first impedance transformation circuit is sequentially composed of a second inductor (L2), a first inductor (L1) and a first capacitor (C1) which are connected in series, and two ends of the second inductor (L2) are connected with a second capacitor (C2) and a third capacitor (C3) which are connected to the ground in parallel; the first impedance conversion circuit is connected with a second impedance conversion circuit, and the second impedance conversion circuit is formed by a first circuit which is formed by a first adjustable capacitor (C4) and a coil (5) which are connected in series and is connected with a second adjustable capacitor (C5) in parallel.
2. The magnetic resonance device of the health data supervision platform according to claim 1, characterized in that: still be connected with a receipt/transmission change over switch unit on the coaxial interface of probe, receive/transmit change over switch unit and probe between through coaxial line connection, receive/transmit change over switch unit by the radio frequency input (RF) that connects gradually in series, first resistance (R1), cross diode (7), cable conductor constitute, the both ends of first resistance (R1) are connected with second resistance (R2) and third resistance (R3) that connect in parallel ground.
3. The magnetic resonance device of the health data supervision platform according to claim 2, characterized in that: the cable is a quarter-wavelength cable.
4. The magnetic resonance device of the health data supervision platform according to claim 1, characterized in that: a NiCl containing paramagnetic ions is arranged in the coil (5)2•6H2And (4) O aqueous solution.
5. The magnetic resonance device of the health data supervision platform according to claim 1, characterized in that: the phase | θ | of the first impedance transformation circuit satisfies 180 °, and | T/R | is less than within 0.4 dB.
6. The magnetic resonance device of the health data supervision platform according to claim 1, characterized in that: the input impedance and the phase of the second impedance transformation circuit are equal to the input impedance and the phase of the radio frequency power amplifier.
7. The magnetic resonance device of the health data supervision platform according to claim 6, characterized in that: the input impedance is 200 +/-20 omega, and the phase is 0 +/-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921953020.5U CN211478629U (en) | 2019-11-13 | 2019-11-13 | Magnetic resonance equipment of health data supervision platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921953020.5U CN211478629U (en) | 2019-11-13 | 2019-11-13 | Magnetic resonance equipment of health data supervision platform |
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| Publication Number | Publication Date |
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| CN211478629U true CN211478629U (en) | 2020-09-11 |
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| CN201921953020.5U Active CN211478629U (en) | 2019-11-13 | 2019-11-13 | Magnetic resonance equipment of health data supervision platform |
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| CN (1) | CN211478629U (en) |
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- 2019-11-13 CN CN201921953020.5U patent/CN211478629U/en active Active
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