Decoupling device and method for array receiving coils of a magnetic resonance water exploration instrument
A receiving coil and decoupling technology, which is applied in the field of magnetic resonance water finding, can solve the problems of poor decoupling effect, and achieve the effects of simple structure, improved reliability, and flexible space layout
Pending Publication Date: 2022-01-11
JILIN UNIV
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Problems solved by technology
For the decoupling method of the radio frequency transmitting coil of the magnetic resonance imaging system mentioned above, the decoupling inside the MRI magnet is moved to the front of the series capacitor to realize the decoupling outside the magnet. This method uses the decoupling capacitor to decouple the transmitting coils. Coupling, when there is inductive coupling between the transmitting coils, decoupling capacitors are also used for decoupling. In theory, it is feasible to use capacitive decoupling instead of inductive decoupling, but when there are both capacitive coupling and inductive coupling between the transmitting coils , only use decoupling capacitors for decoupling, the decoupling effect is not good
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[0051] The detailed description, set forth below in conjunction with the accompanying drawings, is intended as a description of exemplary embodiments of the invention and contains specific details in order to provide a thorough understanding of the exemplary embodiments of the invention. In some instances, devices are shown in block diagram form.
[0052] A decoupling device used between receiving coils of a magnetic resonance water finding instrument array, the device includes a decoupling network and a decoupling base plate, wherein a plurality of decoupling networks are arranged on the decoupling base plate, and the decoupling network includes the first A decoupling inductor, a second decoupling inductor and a decoupling capacitor, the decoupling network is connected to the receiving coil. The receiving coil is wound by enameled wire, and the wire diameter of the enameled wire is very small.
[0053] The two receiving coils that need to be decoupled include two adjacent re...
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The invention discloses a device and a method for realizing decoupling between array receiving coils of a magnetic resonance water exploration instrument. The device comprises decoupling networks and a decoupling bottom plate, the decoupling bottom plate is provided with the plurality of decoupling networks, and the decoupling networks are connected with a plurality of receiving coils. The device is used in a receiving system of a magnetic resonance water exploration instrument, the receiving system comprises a receiver and n receiving coils, and n is greater than or equal to 4; the n receiving coils are arranged in a single row and are spatially coplanar. According to the method, a decoupling network is added between adjacent receiving coils, a decoupling network is added between the next two adjacent receiving coils, and proper decoupling network parameters are set to eliminate signal coupling between the receiving coils. According to the invention, the signal coupling influence between the receiving coils can be effectively suppressed, the problem of signal coupling between array receiving coils in a magnetic resonance water exploration instrument receiving system is solved, and the decoupling networks are added to enable the receiving system to obtain more accurate underground water signals.
Description
[0001] technology neighborhood [0002] The invention relates to magnetic resonance water finding technology, in particular to a decoupling device and method used between receiving coils of a magnetic resonance water finding instrument array. Background technique [0003] The groundwater signal detected by the magnetic resonance water detector is a weak signal, and the surrounding environmental noise will affect the signal. If the noise is too large, the signal will be submerged. It is not conducive to the detection of groundwater in a noisy environment. When the underground water magnetic resonance signal is affected by the noise of the space environment, it is also affected by the signal in the adjacent receiving coil. The receiver of the magnetic resonance water finding instrument has multiple signal receiving channels. When looking for water, the array receiving coil is connected to the receiving channel of the receiver to complete the signal acquisition work. When there ...
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IPC IPC(8): G01V3/14
CPCG01V3/14Y02A90/30
Inventor 万玲汪满满高升周坤高兴
Owner JILIN UNIV