Flexible RF Coil Array for MRI Patient Conformability
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Solution Overview
Problem
Traditional RF coils in MRI systems are rigid and bulky, limiting their ability to conform to patient anatomy, which degrades image quality and patient comfort due to coupling interactions among coil elements.
Innovation Solution
A flexible RF coil array with distributed capacitance wire conductors is used, allowing the coils to deform and position closer to the patient, minimizing magnetic and electric coupling while maintaining signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If traditional rigid RF coils are used, then structural stability is maintained, but the ability to conform to patient anatomy is degraded
Solution Approach 1:
The patent applies flexible shells by embedding RF coils within a flexible foam matrix that can conform to patient anatomy. The flexible carrier structure allows the coil array to adapt to curved body surfaces while maintaining structural integrity through the foam's mechanical properties.
Solution Approach 2:
The patent uses composite materials by combining RF coil elements with flexible foam material to create an integrated flexible coil array. This composite structure provides both the electrical functionality of the coils and the mechanical flexibility of the foam, resolving the contradiction between shape adaptability and structural stability.
2Device complexity
If rigid RF coils are used, then manufacturing simplicity is maintained, but coupling interactions among coil elements increase
Solution Approach 1:
The patent introduces flexible foam as an intermediary material between RF coil elements. This foam medium acts as a decoupling structure that reduces magnetic and electric coupling interactions between adjacent coils while maintaining their functional integrity, thereby reducing device complexity without significantly complicating manufacturing.
3Measurement precision
If RF coils are positioned closer to the patient body, then image quality is improved, but distance from origin of signals increases
Solution Approach 1:
The flexible foam carrier enables the RF coil array to be positioned closer to the patient's body surface by conforming to anatomical contours. This proximity improves signal detection sensitivity and image quality while the flexibility allows the coils to adapt to the body's curvature, effectively minimizing the distance to signal sources.
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 flexible RF coil array enhances image quality by reducing signal degradation and improving patient comfort through closer coil positioning, achieving better signal-to-noise ratios and reduced noise interference.
Implementation Method 1
each RF coil of the plurality of RF coils including at least two distributed capacitance wire conductors
Data Source
AI summary
Methods and systems are provided for radio frequency (RF) coils for magnetic resonance imaging (MRI) systems. In one embodiment, a system comprises: a radio frequency (RF) coil array for a magnetic resonance imaging (MRI) system, including: a flexible shell including an inner layer; and a plurality of flexible RF coils embedded within the inner layer, with each RF coil of the plurality of RF coils including two distributed capacitance wire conductors. In this way, the RF coil array may deform in order to conform to a body of a patient.