Abstract #0926
iLSQR: a Quantitative Susceptibility Mapping method Provided by STI Suite V2.12
Wei Li 1,2 , Nian Wang 3 , Bing Wu 4 , Timothy Q. Duong 1 , and Chunlei Liu 3,5
1
Research Imaging Institute, University of
Texas Health Science Center at San Antonio, San Antonio,
TX, United States,
2
Ophthalmology,
University of Texas Health Science Center at San
Antonio, San Antonio, TX, United States,
3
Brain
Imaging and Analysis Center, Duke University, Durham,
NC, United States,
4
GE
Healthcare, Beijing, China,
5
Radiology,
Duke University, Durham, NC, United States
A novel method, namely iLSQR, is developed for
quantitative susceptibility mapping. This method uses
the previously developed LSQR method to derive an
initial mapping of magnetic susceptibility, a fast
quantitative susceptibility mapping method to estimate
the susceptibility boundaries, and an iterative approach
to estimate and remove the susceptibility artifact using
ill-conditioned k-space regions only. With a fixed set
of parameters, this iLSQR method provides effective
elimination of streaking artifacts, unbiased
quantification of magnetic susceptibility as compared to
COSMOS, and robustness over a range of spatial
resolutions. This method is provided in the software
package of STI Suite v2.12.
This abstract and the presentation materials are available to members only;
a login is required.
Join Here
