A field map estimation strategy without the noise-bandwidth tradeoff

Joseph Dagher, Ali Bilgin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a joint acquisition-processing solution to the problem of field map estimation. Our acquisition method captures data at three echo times carefully chosen to yield optimal field map estimation using the corresponding algorithm. We show that, over an arbitrary spectral range of inhomogeneity values, our method is not subject to the traditional noise-bandwidth tradeoff. The resulting implications include: improved robustness, enhanced spectral estimation and eliminating the need for spatial phase unwrapping. Our simulations show factors of improvement in the quality of field map estimates, as compared to existing methods. Our phantom data confirms these impressive gains.

Original languageEnglish (US)
Title of host publicationMedical Imaging 2012
Subtitle of host publicationImage Processing
DOIs
StatePublished - May 14 2012
EventMedical Imaging 2012: Image Processing - San Diego, CA, United States
Duration: Feb 6 2012Feb 9 2012

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8314
ISSN (Print)1605-7422

Other

OtherMedical Imaging 2012: Image Processing
CountryUnited States
CitySan Diego, CA
Period2/6/122/9/12

Keywords

  • Distortion
  • Field inhomogeneity
  • Field map estimation
  • MRI

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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  • Cite this

    Dagher, J., & Bilgin, A. (2012). A field map estimation strategy without the noise-bandwidth tradeoff. In Medical Imaging 2012: Image Processing [831449] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 8314). https://doi.org/10.1117/12.911026