Novel Design of Dual Resonant RF Microstrip Surface Coil for High-Field MR Applications

Radio Frequency (RF) coils are necessary for MRI machines and are critical in improving image quality. Due to numerous research efforts in RF coil development, birdcage and surface coils are the most commonly used in clinical applications to enhance medical imaging quality. This article introduces a...

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Bibliographic Details
Published in:IEEE access 2024, Vol.12, p.184366-184380
Main Authors: Mahendra, Adhi, Basari, Rahardjo, Eko Tjipto
Format: Article
Language:English
Subjects:
Circuits
Coils
Image quality
Integrated circuit modeling
Larmor frequency
lumped element
Magnetic resonance imaging
Matching
Medical imaging
Medical research
Microstrip
MRI
Phased arrays
Power transfer
Radio frequency
Resonant frequencies
Resonant frequency
Resonators
RF coil
Signal generators
Signal to noise ratio
surface type
Tuning
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Summary:Radio Frequency (RF) coils are necessary for MRI machines and are critical in improving image quality. Due to numerous research efforts in RF coil development, birdcage and surface coils are the most commonly used in clinical applications to enhance medical imaging quality. This article introduces a new surface-type RF coil that is improved by its proximity to the scanned object, boosting its effectiveness. Contrary to past research that examined RF coils operating at one resonant frequency, this study presents a microstrip-based surface RF coil created for dual-frequency use at 64 MHz and 128 MHz, matching the Larmor frequencies for 1.5 T and 3 T MRI machines. The coil was carefully planned, tested, and created, with simulations including a human body model to assess the distribution of the B_{1} field and signal-to-noise ratio (SNR), both essential for assessing the RF coil's performance in the coronal plane. A tuning circuit was created and tested to maximize resonance at specific frequencies. In contrast, a matching circuit was designed to improve power transfer efficiency between the signal generator and the coil. The suggested RF coil was enhanced by incorporating these circuits, improving overall performance. Both the suggested surface-type microstrip RF coil, which includes tuning and matching circuits, effectively functions at 64 MHz and 128 MHz, as shown by both simulation and experimental results, making it a viable clinical option.
ISSN:2169-3536
DOI:10.1109/ACCESS.2024.3507040