Efficient high-frequency body coil for high-field MRI

J. T. Vaughan, G. Adriany, C. J. Snyder, J. Tian, T. Thiel, L. Bolinger, H. Liu, L. DelaBarre, K. Ugurbil

Research output: Contribution to journalArticlepeer-review

131 Scopus citations

Abstract

The use of body coils is favored for homogeneous excitation, and such coils are often paired with surface coils or arrays for sensitive reception in many MRI applications. While the body coil's physical size and resultant electrical length make this circuit difficult to design for any field strength, recent efforts to build efficient body coils for applications at 3T and above have been especially challenging. To meet this challenge, we developed an efficient new transverse electromagnetic (TEM) body coil and demonstrated its use in human studies at field strengths up to 4T. Head, body, and breast images were acquired within peak power constraints of <8 kW. Bench studies indicate that these body coils are feasible to 8T. RF shimming was used to remove a high-field-related cardiac imaging artifact in these preliminary studies.

Original languageEnglish (US)
Pages (from-to)851-859
Number of pages9
JournalMagnetic resonance in medicine
Volume52
Issue number4
DOIs
StatePublished - Oct 2004

Keywords

  • Body coil
  • Body imaging
  • High field
  • MRI
  • TEM

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