Computation of transmitted and received B1 fields in magnetic resonance imaging

Julien Milles, Min Zhu Yue, Nan Kuei Chen, Lawrence P. Panych, Gérard Gimenez, Charles R.G. Guttmann

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Computation of B1 fields is a key issue for determination and correction of intensity nonuniformity in magnetic resonance images. This paper presents a new method for computing transmitted and received B 1 fields. Our method combines a modified MRI acquisition protocol and an estimation technique based on the Levenberg-Marquardt algorithm and spatial filtering. It enables accurate estimation of transmitted and received B 1 fields for both homogeneous and heterogeneous objects. The method is validated using numerical simulations and experimental data from phantom and human scans. The experimental results are in agreement with theoretical expectations.

Original languageEnglish (US)
Article number1621140
Pages (from-to)885-895
Number of pages11
JournalIEEE Transactions on Biomedical Engineering
Issue number5
StatePublished - May 2006
Externally publishedYes


  • Intensity nonuniformity
  • Magnetic resonance imaging
  • Nonlinear inversion
  • Spatial filtering
  • Transmitted and received B fields

ASJC Scopus subject areas

  • Biomedical Engineering


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