NAViEPI

This zenodo repository hosts the data from accelerated diffusion weighted magnetic resonance imaging (DW-MRI) at 7T, highlighting our joint reconstruction technique for shift-encoded navigator-based interleaved echo planar imaging (JETS-NAViEPI), where iEPI meets rsEPI. NAViEPI enforces consistent effective echo spacing between imaging and navigator echoes, enabling (1) minimal distortion mismatch between these imaging and navigator echoes, (2) reliable shot-to-shot phase variation estimation from navigator echoes, (3) flexible number of shots (conventional iEPI is limited to 3 or 4 shots). JETS-NAViEPI achieves sub-millimeter mesoscale resolution DW-MRI at ultra short scan time and ultra-high field (7T). Data provided in this repository consists of: Spatial Resolution (mm3) Diffusion mode Acceleration (in-plane x slice) Shots Navigator Note 0.5 x 0.5 x 2.0 3-scan trace 3 x 2 5 Yes patient (pat) volunteer 1.0 3-shell 126 directions with b-value up to 3000 s/mm2 3 x 3 2 No 1.0 MDDW 20 directions with b-value of 1000 s/mm2 1 x 3 4 No 1.7 x 1.7 x 4.0 MDDW 12 directions with b-value of 1000 s/mm2 2 x 3 1 No