Offset-tuned Bilateral-side Inductively Coupled RF Coils for Preclinical MRI at 15.2 TOffset-tuned Bilateral-side Inductively Coupled RF Coils for Preclinical MRI at 15.2 T
- Other Titles
- Offset-tuned Bilateral-side Inductively Coupled RF Coils for Preclinical MRI at 15.2 T
- Authors
- Soobum Kim; Han-Joong Kim; Phil Heo; Donghyuk Kim; Won Beom Jung; Kyoung-Nam Kim
- Issue Date
- Jun-2020
- Publisher
- 한국자기학회
- Keywords
- MRI; RF coil; Inductively coupled coil; Electromagnetic flux
- Citation
- Journal of Magnetics, v.25, no.2, pp.277 - 284
- Journal Title
- Journal of Magnetics
- Volume
- 25
- Number
- 2
- Start Page
- 277
- End Page
- 284
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/76185
- ISSN
- 1226-1750
- Abstract
- A small coverage of magnetic flux density (B1) and its inhomogeneity are intrinsic problems of conventional surface coils. Therefore, offset-tuned bilateral-side inductively coupled radiofrequency (RF) coils have been specifically designed to overcome these problems. Herein, we proposed bilateral-sided wireless coils for improving the B1-field uniformity by simultaneously adding a supplemental secondary coil (s-coil) to the primary coil (pcoil) in the orthogonal direction. The offset-tuned frequency of the s-coil was evaluated and compared from 0 to +60 MHz with a +10 MHz interval at the Larmor frequency of the p-coil. Using mathematical EM modeling, we optimized the +60-MHz offset-tuned s-coil at 15.2 T. Thus, a combined coil configuration with p-coil of 655 MHz and two s-coils of 710 MHz was obtained. This combined coil configuration can overcome the B1-field inhomogeneity of p-coils in 15.2 T small animal magnetic resonance scanner and can be extended to overcome the volume coil array inhomogeneity.
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