Abstract #3245

Reconstruction of Simultaneous Multi-Slice EPI data using Dual-Polarity GRAPPA Kernels.

W. Scott Hoge¹, Kawin Setsompop², and Jonathan R. Polimeni²

¹Radiology, Brigham and Women's Hospital, Boston, MA, United States, ²Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States

This work presents a new approach to reconstruct SMS-EPI data that employs Dual-Polarity GRAPPA (DPG). DPG accurately models non-linear EPI phase errors between data sampled on positive versus negative readout gradients. When applied to SMS-EPI data, DPG can simultaneously and robustly perform slice separation, recovery of missing data from in-plane acceleration, and slice-specific ghost correction. Phantom and in vivo results are compared to a conventional SMS reconstruction, and demonstrate that DPG reduces residual ghosts and ghosting-related phase interference artifacts.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.