MRI RF Coil Assembly Cooling Channels for Localized Heat Control
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Solution Overview
Problem
Conventional cooling methods for RF coil assemblies in MRI systems are inefficient in managing temperature stability, particularly at localized regions of heat generation, leading to potential patient safety risks and reduced system performance.
Innovation Solution
The RF coil assembly incorporates a support structure with channels that convey a cooling medium, such as forced air flow, specifically targeting the regions of high heat generation around the RF coil end rings, allowing for localized and efficient cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional cooling methods are used for RF coil assemblies, then cooling coverage is provided, but cooling efficiency is low and cooling medium flow rate requirements are high
Solution Approach 1:
The patent applies local quality by positioning cooling channels specifically at locations corresponding to high heat generation regions (end rings) of the RF coil assembly. Instead of uniform cooling throughout the support structure, the channels are strategically located to provide concentrated cooling where it is most needed, thereby improving cooling efficiency while reducing the overall cooling medium flow rate requirement.
2Temperature
If conventional cooling methods are used for RF coil assemblies, then temperature control is provided, but equipment size and cost increase
Solution Approach 1:
By implementing localized cooling channels only at the high heat generation regions rather than throughout the entire support structure, the patent reduces the volume of cooling infrastructure required. This localized approach maintains effective temperature control at critical areas while minimizing the overall equipment size and associated costs.
3Temperature
If conventional cooling methods are used for RF coil assemblies, then cooling is provided, but noise level increases
Solution Approach 1:
The localized cooling channel configuration reduces the total volume of cooling medium flow required to maintain operating temperatures. This reduction in flow rate directly decreases the noise generated by the cooling system, while still providing effective cooling at the high heat generation regions through concentrated cooling capacity.
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
This approach reduces the cooling medium flow rate requirements by up to 1/8th compared to conventional methods, minimizing equipment size, cost, and noise while maintaining safer operating temperatures and image quality.
Implementation Method 1
The channels are configured to convey a cooling medium to cool the support structure in use. The cooling medium includes forced air flow or forced cooled-air flow.
Data Source
AI summary
A radio frequency coil assembly for an MRI system. A support structure extends between a first end and a second end in a first direction and between an inner surface and an opposite outer surface in a second direction perpendicular to the first direction. The support structure has channels that extend into the support structure in the second direction. An RF coil is configured to transmit and/or receive RF signals. The RF coil is supported by the outer surface of the support structure. The channels are at least partially positioned between the support structure and the RF coil in the first direction and are configured to convey a cooling medium to cool the support structure in use.