Zhe Liu1, Pascal Spincemaille2, and Yi Wang1,2
1Biomedical Engineering, Cornell University, Ithaca, NY, United States, 2Radiology, Weill Cornell Medical College, New York, NY, United States
The quality of
Quantitative Susceptibility Mapping (QSM) depends critically on a correct
estimation of total magnetic field, which may sometimes be degraded by phase
unwrapping failure. We propose to bypass the traditional field estimation and
phase unwrapping steps and estimate both background field and local susceptibility
distribution directly from complex GRE images, which is referred to as dcQSM.
Since no field is explicitly existent in our method, dcQSM eliminates phase
unwrapping errors in tradition methods.