Abstract #0928
Vector Model for Quantitative Susceptibility Mapping (Vector QSM)
Tian Liu 1,2 , Cynthia Wisnieff 2,3 , Dong Zhou 2 , Pascal Spincemaille 2 , and Yi Wang 2,3
1
MedImageMetric LLC, New York, NY, United
States,
2
Radiology,
Weill Cornell Medical College, New York, NY, United
States,
3
Biomedical
Engineering, Cornell University, Ithaca, NY, United
States
A vector model for quantitative susceptibility mapping
(vector QSM) is proposed, allowing the reconstruction of
a susceptibility vector map from a single orientation.
Compared to scalar QSM, the vector QSM models the
magnetic field inhomogeneity better and improves image
quality with reduced signal variation. Compared to
susceptibility tensor imaging (STI), vector QSM
drastically reduces the required number of scans and has
improved signal to noise ratio. Vector QSM may be useful
in studying multiple sclerosis lesions to investigate
the molecular underpinning of longitudinal
susceptibility changes.
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