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Abstract #4614

EPI Ghost Correction with LTI k-Space Trajectory Estimation

Nii Okai Addy1, Holden H. Wu1.2, Dwight G. Nishimura1

1Electrical Engineering, Stanford University, Stanford, CA, United States; 2Cardiovascular Medicine, Stanford University, Stanford, CA, United States

Blipped echo planar imaging is very sensitive to timing errors resulting from MR gradient system imperfections causing ghosting artifacts to appear in images with no correction. Using a linear time-invariant model for the gradient system, trajectories achieved on the scanner can be estimated. This provides a general trajectory independent solution to correct for ghosting artifacts without an additional reference scan.