Mohan Lal Jayatilake1,2, Judd Storrs1,3,
Jeff Osterhage1, Jing-Huei Lee1,4
1Center for Imaging
Research, University of Cincinnati, Cincinnati, OH, United States; 2Department
of Physics, University of Cincinnati, Cincinnati, OH, United States; 3Department
of Psychiatry & Behavioural Neuroscience, University of Cincinnati,
Cincinnati, OH, United States; 4School of Energy, Environmental,
Biological, & Medical Engineering, University of Cincinnati, Cincinnati,
OH, United States
Magnetic susceptibility variation can lead to B0 field inhomogeneity and cause artifacts including signal dropout and image distortions. We introduce a method that the addition of the third order passive shim system along with the first and second active shimming significantly improves the homogeneity of the static magnetic field within the human brain.