Numerical calculations of the static magnetic field in three-dimensional multi-tissue models of the human head

Christopher M. Collins, Bei Yang, Qing Yang, Michael B. Smith

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Susceptibility-induced perturbation of the static magnetic field by the human body during magnetic resonance imaging (MRI) leads to undesirable artifacts as well as valuable physiological information, as in functional MRI. The ability to calculate these perturbations for a multi-tissue human body model provides a powerful tool in designing hardware and acquisition methods for reducing the artifacts, and in relating observed image contrast to physiological origins. We have developed a method for calculating the static field in arbitrary 3D magnetic susceptibility distributions and performed calculations in a complete model of the human head and shoulders. The accuracy of our method was validated in regular geometries with known analytical solutions and in comparison with experimental results acquired from the head of the same human subject used for computer modeling. Results are presented in parts per million (ppm) deviation from the applied field strength and are valid for any imaging or spectroscopy system.

Original languageEnglish (US)
Pages (from-to)413-424
Number of pages12
JournalMagnetic Resonance Imaging
Volume20
Issue number5
DOIs
StatePublished - Jun 1 2002

Fingerprint

Magnetic Fields
Head
Tissue
Magnetic fields
Human Body
Imaging techniques
Artifacts
Magnetic resonance
Magnetic susceptibility
Magnetic Resonance Imaging
Spectroscopy
Hardware
Geometry
Spectrum Analysis

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

Cite this

Collins, Christopher M. ; Yang, Bei ; Yang, Qing ; Smith, Michael B. / Numerical calculations of the static magnetic field in three-dimensional multi-tissue models of the human head. In: Magnetic Resonance Imaging. 2002 ; Vol. 20, No. 5. pp. 413-424.
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Numerical calculations of the static magnetic field in three-dimensional multi-tissue models of the human head. / Collins, Christopher M.; Yang, Bei; Yang, Qing; Smith, Michael B.

In: Magnetic Resonance Imaging, Vol. 20, No. 5, 01.06.2002, p. 413-424.

Research output: Contribution to journalArticle

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