Abstract #1598
Slice-by-slice prospective hardware motion correction in EPI and simultaneous multislice sequences
Paul Wighton 1 , M. Dylan Tisdall 1 , Erez Nevo 2 , Kawin Setsompop 1 , Stephen F Cauley 1 , Himanshu Bhat 3 , Thomas Benner 4 , Dara S Manoach 5 , and Andr van der Kouwe 1
1
Radiology, MGH, Charlestown, MA, United
States,
2
Robin
Medical, Baltimore, MD, United States,
3
Healthcare
Sector, Siemens, Charlestown, MA, United States,
4
Healthcare
Sector, Siemens AG, Erlangen, Germany,
5
Psychiatry,
MGH, Charlestown, MA, United States
Recent research has shown that head motion can cause
spurious group differences in functional as well as
structural connectivity analyses. We examine
slice-by-slice prospective hardware motion correction in
EPI sequences (BOLD and 3x simultaneous multislice BOLD)
in order to mitigate such differences. Our method incurs
a 7.8% and 15.9% penalty to tSNR due motion in the BOLD
and 3xSMS-BOLD sequences respectively, compared to 38.5%
and 23.8% tSNR penalty respectively in the next best
methods. Additionally, we observe that susceptibility
due to motion has as large an effect as the motion
itself.
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