Affiliations: [a] Centre for Technology R and D, Institute of High
Energy Physics, Chinese Academy of Sciences, Beijing, China | [b] Department of Nuclear Engineering, The University of
Tokyo, Tokyo, Japan | [c] Department of Electrical Engineering, The University
of Tokyo, Tokyo, Japan | Université Laval, Canada | Tohoku University, Japan
Correspondence:
[*]
Corresponding author: Haitao Zhu, Centre for Technology R and D,
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
E-mail: [email protected]
Abstract: Magnetic susceptibility is the inherent property of materials.
Magnetic resonance imaging as a kind of non-invasive testing technique may
measure the magnetic field distortion induced by the imaging object and
consequently calculate its magnetic susceptibility distribution.
Conventionally, magnetic susceptibility mapping is performed in
three-dimensional mode with the requirement of multi-slice scanning. In the
condition of long objects that have uniform distribution along one direction,
two-dimensional phase image of the cross section might be enough to estimate
the susceptibility. In this study, we adjust susceptibility mapping algorithm
into a two-dimensional mode and evaluate the possibility of using a
single-slice image to estimate the magnetic susceptibility. Simulation was
performed to validate the algorithm in both ideal and noise-imposed conditions.
MRI experiment was performed by using copper, graphite and iron oxide at
different concentrations. The results suggest that it is possible to measure
the susceptibility of a long object by a two-dimensional image.
Keywords: Magnetic resonance imaging, susceptibility mapping, phase image
