Design and test of a double-nuclear RF coil for (1)H MRI and (13)C MRSI at 7T

J Magn Reson. 2016 Jun;267:15-21. doi: 10.1016/j.jmr.2016.04.001. Epub 2016 Apr 7.

Abstract

RF coil operation at the ultrahigh field of 7T is fraught with technical challenges that limit the advancement of novel human in vivo applications at 7T. In this work, a hybrid technique combining a microstrip transmission line and a lumped-element L-C loop coil to form a double-nuclear RF coil for proton magnetic resonance imaging and carbon magnetic resonance spectroscopy at 7T was proposed and investigated. Network analysis revealed a high Q-factor and excellent decoupling between the coils. Proton images and localized carbon spectra were acquired with high sensitivity. The successful testing of this novel double-nuclear coil demonstrates the feasibility of this hybrid design for double-nuclear MR imaging and spectroscopy studies at the ultrahigh field of 7T.

Keywords: 7Tesla; Lumped-element L-C loop coil; Microstrip transmission line (MTL) resonator; Radio-frequency (RF) coil; Surface coil; Ultrahigh field magnetic resonance imaging (MRI); Ultrahigh field magnetic resonance spectroscopy (MRS).

Publication types

  • Evaluation Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon-13 Magnetic Resonance Spectroscopy / instrumentation*
  • Equipment Design
  • Equipment Failure Analysis
  • Magnetics / instrumentation*
  • Molecular Imaging / instrumentation*
  • Proton Magnetic Resonance Spectroscopy / instrumentation*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Transducers*