Novel multi-channel transmission line coil for high field magnetic resonance imaging

Can Eyup Akgun, Lance DelaBarre, Sung-Min Sohn, Carl Snyder, Gregor Adriany, Kamil Ugurbil, J. T Vaughan, Anand Gopinath

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Radiofrequency (RF) coils are the antenna-like devices used in magnetic resonance imaging (MRI) to inductively excite and receive the nuclear magnetic resonance (NMR) signal in anatomy. This nuclear magnetic induction is most efficient at the field strength dependent Larmor frequency for a nuclear species. Coils must resonate at Larmor frequencies of 300 MHz or more to take advantage of the signal-to-noise benefits of 7T+ MRI. In high water content tissue dielectrics however, the wavelengths at these frequencies are 12cm and less, significantly shorter than human anatomic dimensions. One consequence of these short wavelengths is a highly non-uniform RF excite field. In this investigation, we aim to mitigate this problem through a novel coil element design. The traditional microstrip line element is modified into a multi-section alternating impedance configuration to homogenize the magnetic field over the coil length. Feasibility of this approach is numerically simulated, and then empirically validated by phantom and human imaging.

Original languageEnglish (US)
Title of host publicationIMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest
Pages1425-1428
Number of pages4
DOIs
StatePublished - Dec 1 2009
Event2009 IEEE MTT-S International Microwave Symposium, IMS 2009 - Boston, MA, United States
Duration: Jun 7 2009Jun 12 2009

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Other

Other2009 IEEE MTT-S International Microwave Symposium, IMS 2009
CountryUnited States
CityBoston, MA
Period6/7/096/12/09

Fingerprint

Magnetic resonance
transmission lines
magnetic resonance
Electric lines
coils
Imaging techniques
Wavelength
Electromagnetic induction
Microstrip lines
Water content
magnetic induction
anatomy
Nuclear magnetic resonance
wavelengths
Tissue
Antennas
Magnetic fields
moisture content
field strength
antennas

Keywords

  • Impedance
  • MRI
  • Microstrip
  • RF coils
  • Resonators

Cite this

Akgun, C. E., DelaBarre, L., Sohn, S-M., Snyder, C., Adriany, G., Ugurbil, K., ... Gopinath, A. (2009). Novel multi-channel transmission line coil for high field magnetic resonance imaging. In IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest (pp. 1425-1428). [5165974] (IEEE MTT-S International Microwave Symposium Digest). https://doi.org/10.1109/MWSYM.2009.5165974

Novel multi-channel transmission line coil for high field magnetic resonance imaging. / Akgun, Can Eyup; DelaBarre, Lance; Sohn, Sung-Min; Snyder, Carl; Adriany, Gregor; Ugurbil, Kamil; Vaughan, J. T; Gopinath, Anand.

IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest. 2009. p. 1425-1428 5165974 (IEEE MTT-S International Microwave Symposium Digest).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Akgun, CE, DelaBarre, L, Sohn, S-M, Snyder, C, Adriany, G, Ugurbil, K, Vaughan, JT & Gopinath, A 2009, Novel multi-channel transmission line coil for high field magnetic resonance imaging. in IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest., 5165974, IEEE MTT-S International Microwave Symposium Digest, pp. 1425-1428, 2009 IEEE MTT-S International Microwave Symposium, IMS 2009, Boston, MA, United States, 6/7/09. https://doi.org/10.1109/MWSYM.2009.5165974
Akgun CE, DelaBarre L, Sohn S-M, Snyder C, Adriany G, Ugurbil K et al. Novel multi-channel transmission line coil for high field magnetic resonance imaging. In IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest. 2009. p. 1425-1428. 5165974. (IEEE MTT-S International Microwave Symposium Digest). https://doi.org/10.1109/MWSYM.2009.5165974
Akgun, Can Eyup ; DelaBarre, Lance ; Sohn, Sung-Min ; Snyder, Carl ; Adriany, Gregor ; Ugurbil, Kamil ; Vaughan, J. T ; Gopinath, Anand. / Novel multi-channel transmission line coil for high field magnetic resonance imaging. IMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest. 2009. pp. 1425-1428 (IEEE MTT-S International Microwave Symposium Digest).
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