Design of a ceramic dielectric resonator for NMR microimaging at 14.1 tesla

Thomas Neuberger, V. Tyagi, E. Semouchkina, Michael T. Lanagan, A. Baker, K. Haines, A. G. Webb

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Radiofrequency coil design for magnetic resonance becomes increasingly challenging at high magnetic field strengths due to resonator dimensions being a significant fraction of the electromagnetic wavelength, as well as the increased radiative and component losses intrinsic to higher frequencies. In this article an inductively fed dual-disk ceramic dielectric resonator was constructed from barium strontium titanate, which has a high relative permittivity of 323, for operation at 600 MHz (14.1 tesla). The design is very simple, avoids wavelength issues, uses high Q-materials, and has the additional advantage of being able to change the resonator's effective diameter. Preliminary images show a significantly higher signal-to-noise than obtained using a similarly-sized conventional saddle coil.

Original languageEnglish (US)
Pages (from-to)109-114
Number of pages6
JournalConcepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
Volume33
Issue number2
DOIs
StatePublished - Apr 1 2008

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Spectroscopy
  • Physical and Theoretical Chemistry

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