Abstract #2238
Coronal whole body diffusion imaging with 2D spatially selective excitation (FOCUS)
Maggie M Fung 1 , Lloyd Estkowski 2 , Dan Xu 3 , Suchandrima Banerjee 2 , Pauline Worters 2 , Gaohong Wu 4 , John Skinner 4 , and Ersin Bayram 5
1
Global MR Applications and Workflow, GE
Healthcare, Jersey City, NJ, United States,
2
Global
MR Applications and Workflow, GE Healthcare, Menlo Park,
CA, United States,
3
Global MR Applications and
Workflow, GE Healthcare, Waukesha, WI, United States,
4
MR
Engineering, GE Healthcare, Waukesha, WI, United States,
5
Global
MR Applications and Workflow, GE Healthcare, Houston,
TX, United States
Diffusion weighted whole body imaging is conventionally
acquired axially to reduce image distortion due to B0
inhomogeneity in the SI direction. However, axial DWI
acquisition requires longer scan time, as compared to
coronal acquisition, and direct coronal DWI requires
high acceleration factor to reduce distortion. We
propose an alternative method for coronal diffusion
imaging using 2D spatially selective excitation (FOCUS)
that can reduce distortion at lower acceleration
factors. We have shown that FOCUS imaging suffers much
less distortion compared to conventional rectangular FOV
imaging at the same acceleration factor and can be
clinically viable for whole body diffusion imaging.
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