Abstract #4441
Improve Image Homogeneity of High-Resolution DWI
Jiazheng Wang 1 and Yongchuan Lai 2
1
STO-MR, GE Healthcare, Beijing, Beijing,
China,
2
GE
Healthcare, Beijing, China
EPI based diffusion imaging is widely used yet suffers
from geometric distortions, which become more pronounced
in high resolution imaging. This work presents a method
to implement 2D excitation for high-resolution EP-DWI
with reduced phase encoding FOV, and thus to reduce the
geometric distortion. Comparing to prior-art technique,
the 2D excitation in this work is equipped with a pair
of walking-saturations, which can improve the excitation
profile in the phase encoding FOV direction and get more
homogeneous imaging results. The proposed method is also
shown to increase the max number of slices per TR
comparing to traditional 2D excitation.
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