1Radiology and Imaging Sciences, Indiana University, Indianapolis, IN, United States, 2Darmonth College, Hanover, NH, United States
High-resolution
DWI often relies on multi-shot acquisitions, which suffer from long acquisition
time and motion-related phase issues. However, highly correlated information
exists in DWIs as they are weighting the same structure. To take advantages of
this feature, rotating short-axis DWI was proposed to accelerate DWI
acquisition by acquiring only one rotating blade per diffusion direction. In
the previous reconstruction, high-resolution DWI was achieved by integrating
the full set of DWIs. In this work, we propose a “windowed” composite
reconstruction where only a subset of DWIs was selected to reconstruct each
high-resolution DWI. Improved image
quality was appreciated in both simulation and human data.
