Real-Time Coil Decoupling in MRI via Dynamic Feedback Control
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Solution Overview
Problem
Existing coil decoupling methods for magnetic resonance imaging devices are ineffective in achieving real-time decoupling and are influenced by load factors, leading to suboptimal imaging performance.
Innovation Solution
A method and apparatus for coil decoupling in magnetic resonance imaging devices that calculates the coupling value between coils based on transmitted and received signals, and adjusts the decoupling component in real-time to achieve effective decoupling, thereby reducing the influence of load factors on imaging performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coil decoupling is implemented using existing methods, then the coupling between coils is reduced to some extent, but the decoupling effect is insufficient and cannot achieve real-time decoupling
Solution Approach 1:
The patent implements a feedback mechanism where the controller continuously monitors the coupling state between coils and dynamically adjusts the decoupling components accordingly. The controller sends adjustment instructions to the decoupling components based on detected coupling values, creating a closed-loop control system that achieves real-time decoupling and significantly improves the decoupling effect compared to static existing methods
Solution Approach 2:
The patent transforms the static decoupling approach into a dynamic one by enabling real-time adjustment of decoupling components. The system continuously adapts the decoupling state based on changing coupling conditions, allowing the magnetic resonance imaging device to maintain optimal performance during operation rather than relying on fixed pre-set decoupling parameters
2Reliability
If coil decoupling is performed using existing methods, then some coupling interference is reduced, but the decoupling results vary under different loads
Solution Approach 1:
The feedback control mechanism continuously monitors coupling values under different load conditions and dynamically adjusts decoupling components to maintain stable decoupling performance. This closed-loop approach compensates for load variations, ensuring consistent decoupling results regardless of changing operational conditions
Solution Approach 2:
The patent changes the operational parameters of decoupling components in real-time based on detected coupling values. By dynamically adjusting parameters such as capacitance or inductance values of decoupling components, the system adapts to different load conditions and maintains optimal decoupling performance across varying operational scenarios
3Area of stationary object
If array coils are used to improve imaging coverage, then the imaging area is increased, but magnetic field coupling between adjacent coils increases
Solution Approach 1:
The patent introduces decoupling components as intermediary elements between adjacent array coils. These components act as mediators that reduce magnetic field coupling between closely spaced coils, enabling the system to maintain large imaging coverage while minimizing the harmful coupling effects that would otherwise limit array coil performance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution enables effective real-time decoupling of coils, improving magnetic resonance imaging performance by reducing the impact of load factors and enhancing the efficiency of coil array operations.
Implementation Method 1
sending an instruction causing the transmitter to send a transmitted signal, acquiring a received signal received by the receiver, wherein the received signal is the transmitted signal arriving at the receiver after passing through two coils to be adjusted
Data Source
AI summary
A coil decoupling method for a magnetic resonance imaging device, including: sending an instruction causing a transmitter to send a transmitted signal, acquiring a received signal received by a receiver, wherein the received signal is a signal arriving at the receiver after the transmitted signal passes through two coils to be adjusted of a plurality of coils, determining the coupling value between the two coils to be adjusted based on the transmitted signal and the received signal, and sending an instruction for adjusting a decoupling component based on the coupling value.