Computation of the signal-to-noise ratio of high-frequency magnetic resonance imagers

Marc E. Kowalski, Jian Ming Jin, Ji Chen

Research output: Contribution to journalArticlepeer-review


A method of computing the signal-to-noise ratio (SNR) in high-frequency magnetic resonance (MR) imaging systems is presented. The method uses a numerical solution to Maxwell's equations which can capture all relevant electrodynamic effects at high B0-field strengths. Using this method, the intrinsic SNR of both volume and surface coils loaded with the human head is calculated as a function of frequency. It is shown that although the available SNR from any point scales favorably with frequency, phase inhomogeneity over the volume of the head may pose a challenge to achieving improved SNR with traditional imaging techniques at high B0-fieid strengths.

Original languageEnglish (US)
Pages (from-to)1525-1532
Number of pages8
JournalIEEE Transactions on Biomedical Engineering
Issue number11
StatePublished - Nov 2000


  • Magnetic resonance imaging
  • Numerical analysis
  • Signal-to-noise ratio

ASJC Scopus subject areas

  • Biomedical Engineering


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