On the field inhomogeneity of a birdcage coil

Jianming Jin, Gary Shen, Thomas Perkins

Research output: Contribution to journalArticlepeer-review


A mathematical model is developed for the numerical analysis of birdcage coils constructed using capacitors having different capacitance. With the aid of this model, it is shown that the deviation of some capacitance introduced by tune, balance, and drive mechanisms can cause inhomogeneity in the B1, field produced by the coil. Useful curves and formulae are developed to provide a guideline for the design of birdcage coils.

Original languageEnglish (US)
Pages (from-to)418-422
Number of pages5
JournalMagnetic Resonance in Medicine
Issue number3
StatePublished - Sep 1994


  • B field inhomogeneity
  • RF coil
  • birdcage coil

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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