Design of a Coplanar Interlayer Gapped Microstrips Arrangement for Multi-Nuclei (1H, 19F, 31P, and 23Na) Applications in 7T MRI

Seven Tesla Magnetic Resonance (MR) systems can obtain high quality anatomical images using protons (1H) and can be used for multinuclear imaging and MR spectroscopy. These imaging modes can also obtain images and metabolic information using other nuclei, such as 19F, 31P, and 23Na. Here, we present...

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Bibliographic Details
Published inApplied sciences Vol. 11; no. 3; p. 957
Main Author Hernandez, Daniel
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.01.2021
Subjects
Adenosine
Design
Dielectrics
EM simulations
gapped microstrips
Geometry
Image quality
Interlayers
Magnetic fields
Magnetic resonance imaging
Magnetic resonance spectroscopy
multinuclear imaging
Nuclei (nuclear physics)
Spectrum analysis
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Summary:Seven Tesla Magnetic Resonance (MR) systems can obtain high quality anatomical images using protons (1H) and can be used for multinuclear imaging and MR spectroscopy. These imaging modes can also obtain images and metabolic information using other nuclei, such as 19F, 31P, and 23Na. Here, we present an RF coil unit using a microstrip capable of resonating at four frequencies: 300 (1H), 280 (19F), 121 (31P), and 78 (23Na) MHz. The RF unit consists of a single feeding port and four lines that resonate and run a current at their respective frequency. We used the gapped microstrip concept to isolate each conducting line and interleaved the dielectric materials used for each line, thereby reducing the coupling between them. We also analyzed this design using electromagnetic (EM) simulations, and found that the quad tuned arrangement produced low coupling between adjacent current lines and achieved a uniform |B1| field in the z-y plane.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11030957