Fig. 3: Comparison of methods across subjects. (A) SNR for each ACS scheme. (B) Residual aliasing after B0 manipulation. Sequential-segment multi-shot auto-calibration for GRAPPA EPI: maximizing temporal SNR and reducing motion sensitivity Jonathan R. Polimeni, Himanshu Bhat, Thomas Benner, Thorsten Feiweier, Souheil J. Inati, Thomas Witzel, Keith Heberlein, and Lawrence L. Wald A.A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, MA, United States, Siemens Medical Solutions USA Inc., Charlestown, MA, United States, Siemens AG, Healthcare Sector, Erlangen, Bavaria, Germany, National Institute of Mental Health, Bethesda, MD, United States, Harvard-MIT Division of Health Sciences and Technology, MIT, Cambridge, MA, United States