Abstract #3619
Geometric Distortion in Diffusion-Weighted MR Imaging of the Prostate Contributing Factors and Strategies for Improvement
Francisco Donato Jr 1 , Daniel N. Costa 1 , Qing Yuan 1 , Neil M. Rofsky 1 , Robert E. Lenkinski 1 , and Ivan Pedrosa 1
1
UT Southwestern Medical Center, Dallas, TX,
United States
This study is the first investigation assessing
parameters that may influence geometric distortion on
DWI of the prostate. We explored the causes and degree
of geometric distortion observed in DWI of the prostate
and assessed different acquisition strategies to
mitigate deformation. The magnitude of distortion was
assessed in patients and the effects of phase-encoding
direction, receiver bandwidth, and parallel imaging were
assessed in a prostate phantom on two different 3T MRI
scanners from different manufacturers. We found that
distortion occurs in the phase-encoding direction, and
is less pronounced when higher bandwidth or parallel
imaging is used.
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