MR Coil Power Switching to Limit Imaging Interference
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Solution Overview
Problem
Wired connections in magnetic resonance (MR) apparatus coils interfere with electromagnetic fields during imaging, affecting imaging quality.
Innovation Solution
Implement a power supply system that includes a battery, wireless charging device, and wired power source, dynamically selecting between them based on the MR apparatus's operating state to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used for power supply to coils, then power supply reliability is improved, but electromagnetic interference with imaging fields increases
Solution Approach 1:
The patent replaces wired mechanical connections with wireless power transmission technology. The wireless power transmission device transmits power through electromagnetic fields without physical contact, eliminating the wired connections that cause electromagnetic interference with the MR imaging fields while maintaining power supply functionality.
Solution Approach 2:
The patent introduces a wireless power transmission device as an intermediary between the power source and the coil. This intermediary enables power transfer through electromagnetic coupling without direct wired connection, thus avoiding the harmful electromagnetic interference that wired connections cause to the imaging process.
2Object-generated harmful factors
If wireless power transmission is used, then electromagnetic interference is reduced, but power transmission stability may be affected
Solution Approach 1:
The patent employs dynamic adjustment mechanisms in the wireless power transmission system. The system can adaptively adjust transmission parameters based on real-time conditions, maintaining stable power delivery despite variations in positioning or environmental factors, thus ensuring reliability while avoiding wired interference.
Solution Approach 2:
The patent incorporates feedback control in the wireless power transmission system. By monitoring power transmission status and adjusting accordingly, the system maintains stable power delivery to the coil while using wireless transmission to avoid electromagnetic interference with the MR imaging fields.
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
Enhances imaging quality by reducing electromagnetic interference from power supply connections, allowing for more stable and effective MR imaging.
Implementation Method 1
a wireless charging device configured to supply power for the at least one coil when the MR apparatus is in the non-scanning state
Implementation Method 2
a battery configured to supply power for the at least one coil when the MR apparatus is in the scanning state
Data Source
AI summary
A magnetic resonance (MR) apparatus is provided. The MR apparatus may include at least one processor. The at least one processor may be configured to obtain an operating state of the MR apparatus; and select, from two or more power supply devices, a power supply device for supplying power for at least one coil of the MR apparatus according to the operating state of the MR apparatus. The at least one processor may be configured to obtain, through a relay component connected to a coil section, motion information of at least one component of the coil section; and generate, based on the motion information, control instructions for adjusting communication parameters of a first directional communication module of the coil section and a second directional communication module of the relay component.