Rebecca Emily Feldman1, Hadrien A Dyvorne1, Rafael O'Halloran1, and Priti Balchandani1
The
higher signal-to-noise-ratio offered at 7T, has been shown to increase the resolution
of diffusion MRI as well as the precision and directional certainty of
diffusion-based parameters. Two major drawbacks of 7T dMRI include lengthy
acquisitions and signal loss due to B1-inhomogeneity. SMS methods
reduce the duration of the acquisition, the refocusing pulses typically used in
dMRI are particularly sensitive to B1 non-uniformities leading to a
loss in signal, or even complete signal dropout in parts of the image. We have
created a dMRI sequence with SEAMS PINS and an EPI readout that provides
improved immunity to B1-inhomogeneity.
