Modular Gradient Shim Coil Array for MRI Systems
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current magnetic resonance tomograph gradient and shim systems have limited flexibility and efficiency in generating magnetic fields, requiring cumbersome production methods and differing design requirements that complicate assembly and operation.
Innovation Solution
A modular support structure with multiple support elements, each equipped with primary and secondary conductor arrangements, allowing for independent energization and flexible configuration to generate varied magnetic field geometries, reduce disruptive factors, and achieve self-shielding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gradient and shim coils are designed as separate cylindrical systems with different requirements, then each system can be optimized for its specific function, but the overall device complexity increases and assembly becomes more difficult
Solution Approach 1:
The patent combines gradient coils and shim coils into a single integrated array structure where both types of coils share common support elements and conductor arrangements. This merging approach maintains the functional optimization of separate gradient and shim systems while reducing overall device complexity through unified mechanical support and standardized assembly procedures.
Solution Approach 2:
The support elements and conductor arrangements are designed to serve dual purposes: they provide structural support for both gradient and shim coils simultaneously, and the modular architecture enables the same basic structure to accommodate different coil configurations depending on whether gradient or shim functionality is required.
2Stability of the object's composition
If gradient and shim coils are assembled using traditional casting methods, then structural stability is achieved, but the manufacturing process becomes cumbersome and less flexible
Solution Approach 1:
The coil array is divided into modular segments where individual support elements can be manufactured separately using standardized processes, then assembled into the complete structure. This segmentation enables easier manufacturing and assembly compared to traditional monolithic casting methods while maintaining structural stability through precise mechanical connections.
Solution Approach 2:
Support elements and conductor arrangements are pre-assembled into modular units before final integration into the complete coil array. This preliminary assembly approach simplifies the overall manufacturing process by allowing standardized components to be prepared in advance using optimized processes, then quickly integrated into the final structure.
3Adaptability or versatility
If multiple separate coils are used to achieve flexible magnetic field generation, then adaptability increases, but the number of components and assembly complexity increases
Solution Approach 1:
The patent implements independent electrical control of individual conductor arrangements within the integrated array, allowing dynamic selection and combination of different coil configurations. This enables flexible generation of various magnetic field geometries by selectively energizing specific conductor arrangements rather than requiring physically separate coils for each function.
Solution Approach 2:
The same integrated support structure and conductor arrangements serve multiple functions: they can generate gradient fields, shim fields, or combinations thereof, depending on the electrical configuration and control parameters. This multi-functionality reduces the number of separate components needed while maintaining high adaptability for different magnetic field requirements.
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 modular design enhances the performance characteristics of gradient and shim systems, enabling cost-effective, flexible, and efficient generation of primary magnetic fields with improved shielding and reduced operational complexity.
Implementation Method 1
a primary conductor arrangement (6) for generating a primary magnetic field (1B) that modifies the main magnetic field
Implementation Method 2
a secondary conductor arrangement (7) for shielding the primary magnetic field
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A modular setup for gradient and shim coil arrays. The setup comprises individual, connectable coil support elements, each carrying individual coil elements. These are used to modify the static magnetic field in magnetic resonance imaging (MRI) scanners for shim purposes or to achieve spatial coding. The coil support elements also contain active shielding coils. The setup can be used, for example, to perform parallel acquisition with localized gradient (PATLOC) measurements.