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Quantitative susceptibility mapping: current status and future directions.

E Mark Haacke1, Saifeng Liu2, Sagar Buch2

  • 1Department of Radiology, Wayne State University, Detroit, MI, USA; School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, China.

Magnetic Resonance Imaging
|October 1, 2014
PubMed
Summary
This summary is machine-generated.

Quantitative susceptibility mapping (QSM) offers a promising method for measuring magnetic susceptibility. This review explores QSM

Keywords:
Iron quantificationMagnetic susceptibilityPhase imagingQuantitative susceptibility mappingSusceptibility weighted imagingVenous oxygen saturation

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Area of Science:

  • Medical Imaging
  • Biophysics
  • Neuroimaging

Background:

  • Quantitative susceptibility mapping (QSM) is an emerging technique for magnetic susceptibility quantification.
  • QSM has applications in measuring in vivo iron, calcifications, and venous oxygen saturation changes.

Purpose of the Study:

  • To review the entire quantitative susceptibility mapping (QSM) process, from data acquisition to processing.
  • To analyze uncertainties in susceptibility estimation and compare different mapping techniques.
  • To present preliminary results of novel concepts for improving QSM quality and accuracy.

Main Methods:

  • Comprehensive review of QSM data acquisition and processing steps.
  • Analysis of uncertainties in susceptibility, phase, and T2* maps.
  • Presentation of preliminary data for new QSM improvement concepts.

Main Results:

  • Susceptibility mapping accuracy depends on multiple factors evaluated in this review.
  • Uncertainties in susceptibility estimation using different maps are analyzed.
  • Preliminary results suggest potential improvements in QSM quality and accuracy.

Conclusions:

  • Quantitative susceptibility mapping (QSM) shows significant potential for accurate iron quantification.
  • QSM is poised to become a valuable standard clinical tool for various applications.