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Arrays of mutually coupled receiver coils: theory and application
S M Wright1, R L Magin, J R Kelton
1Department of Electrical Engineering, Texas A&M University, College Station 77843-3128.
Magnetic Resonance in Medicine
|January 1, 1991
Summary
This study introduces a novel technique for designing magnetic resonance (MR) receiver coil arrays. The method enables remote selection of the sensitive region, enhancing MR imaging and spectroscopy flexibility.
Area of Science:
- Magnetic Resonance Imaging (MRI)
- Spectroscopy
- Coil Array Design
Background:
- Specialized receiver coils improve signal-to-noise ratio (SNR) in MR imaging and spectroscopy.
- However, these coils often limit the usable field of view.
- Existing designs lack flexibility in selecting the sensitive region.
Purpose of the Study:
- To present a technique for designing flexible MR receiver coil arrays.
- To enable remote selection of the sensitive region's size and location.
- To improve system design and implementation flexibility.
Main Methods:
- Developed a method for analysis and design of mutually coupled coil arrays.
- Incorporated mutual coupling effects between primary coils for simultaneous use.
- Implemented a controller system for remote sensitive region selection and impedance matching.
Main Results:
- Demonstrated a technique for designing coil arrays with remotely selectable sensitive regions.
- Showcased flexibility in system design by connecting only one coil element to the receiver.
- Presented results from a mutually coupled coil array designed for spine imaging.
Conclusions:
- The presented technique offers enhanced flexibility and control over MR receiver coil arrays.
- Remote selection of the sensitive region improves MR imaging and spectroscopy applications.
- The method is applicable to coil arrays of arbitrary shape and number of elements.