Abstract #0217

Echo Planar Time-resolved Imaging (EPTI)

Fuyixue Wang^1,2, Zijing Dong³, Timothy G. Reese¹, Berkin Bilgic¹, Mary Kate Manhard¹, Lawrence L. Wald^1,2, and Kawin Setsompop^1,2

¹A. A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA, United States, ²Harvard-MIT Health Sciences and Technology, MIT, Cambridge, MA, United States, ³Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China

A new technique, termed Echo Planar Time-resolved Imaging (EPTI), was developed to address EPI’s geometric distortion and blurring, and to provide new temporal signal evolution information across the EPI readout window. Using only a few shots, a time-series of multi-contrast images can be created free of distortion and blurring (up to 100 T₂- and T₂*-weighted images with time interval of an EPI echo spacing). This should make EPTI useful for numerous applications where undistorted images across multiple-contrasts are desired. We demonstrated EPTI in brain to simultaneously map T₂, T₂*, and tissue phase, as well as to provide SWI.

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