Abstract #2056
The magnitude point spread function is an inadequate measure of T 2 * -blurring in EPI
Laurentius Huber 1 , Maria Guidi 1 , Jozien Goense 2 , Toralf Mildner 1 , Robert Trampel 1 , Jessika Schulz 1 , Cornelius Eichner 1 , Robert Turner 1 , and Harald E Mller 1
1
Max Planck Institute for Human Cognitive &
Brain Sciences, Leipzig, Germany,
2
University
of Glasgow, United Kingdom
We investigated here how the T
2
*
-decay
during
k
-space
acquisition in EPI affects the blurring of the resulting
image. We show that the corresponding PSF broadening is
an inadequate measure of describing the associated T
2
*
-blurring.
Based on theoretical and experimental results shown, we
conclude that full
k
-space
acquisition GE-EPI has higher effective resolution than
half
k
-space
acquisition GE-EPI or than SE-EPI. This helps to
disentangle layer-dependent activation with higher
effective resolution.
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