MRI Examination Room Shield Segmentation for Electromagnetic Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Magnetic resonance imaging (MRI) devices are susceptible to electromagnetic interference from additional devices in the examination room, which compromises imaging quality and requires effective shielding to operate without interference.
Innovation Solution
An examination room shield with a peripherally closed shield side wall and a sub-shield assembly that includes a hollow sub-shield for installing the MRI device, along with a separate shielded space for additional devices, utilizing materials like copper foil or galvanized steel to create a Faraday cage effect and prevent electromagnetic interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an additional device is installed in the MRI examination room, then the functionality and versatility of the examination room is improved, but electromagnetic interference to the MRI device increases
Solution Approach 1:
The shielded room is divided into two independent shielded spaces: a first shielded space for the MRI device and a second shielded space for the additional device. This segmentation physically separates the two devices, allowing the additional device to be installed and operated without causing electromagnetic interference to the MRI device, thus maintaining both versatility and electromagnetic compatibility.
Solution Approach 2:
The second shielded space (for the additional device) is nested within or adjacent to the first shielded space (for the MRI device) within the same examination room structure. This nested arrangement allows both devices to coexist in one room while maintaining independent electromagnetic shielding, resolving the contradiction between room versatility and electromagnetic interference protection.
2Object-affected harmful factors
If a shielded room is constructed to protect the MRI device, then electromagnetic interference is reduced, but the device complexity and construction cost increase
Solution Approach 1:
Instead of constructing one large complex shielded room, the shielding is segmented into two separate but coordinated shielded spaces. Each space has its own shielding structure optimized for its specific device, reducing overall construction complexity while maintaining effective electromagnetic protection for both the MRI device and additional device.
Solution Approach 2:
The shielded spaces act as intermediary structures between the MRI device and the additional device, providing electromagnetic isolation. This intermediary shielding approach simplifies the overall system design by creating clear boundaries and isolation zones, making the shielded room construction more manageable and less complex.
3Area of stationary object
If the shielded room is designed to accommodate both devices, then the operational space is improved, but the shielding effectiveness may be compromised
Solution Approach 1:
The operational space is segmented into distinct zones: the first shielded space for MRI operations and the second shielded space for additional device operations. This segmentation allows both devices to have adequate operational space while maintaining effective electromagnetic shielding boundaries, preventing interference between the two devices despite sharing the same examination room.
Solution Approach 2:
The shielded spaces are arranged in a nested or adjacent configuration within the examination room, optimizing the use of available space. This spatial arrangement ensures both devices have sufficient operational room while the shielding structures maintain their integrity and effectiveness in preventing electromagnetic interference.
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 solution effectively shields the MRI device from external and internal electromagnetic interference, ensuring high imaging quality and providing a larger operational space for operators while allowing for the use of additional devices like radiotherapy equipment without disrupting the MRI operation.
Implementation Method 1
utilizing materials like copper foil or galvanized steel to create a Faraday cage effect and prevent electromagnetic interference
Data Source
AI summary
Embodiments of the present disclosure disclose an examination room shield, comprising: a peripherally closed shield side wall, and a sub-shield assembly disposed in an inner space enclosed by the shield side wall, the sub-shield assembly including a peripherally closed sub-shield side wall.