Abstract #2058
Assessment of prospective motion correction using optical tracking system for reduction of stimulus-correlated false positive activations in high spatial resolution functional magnetic resonance imaging
Ikuhiro Kida 1,2 , Takashi Ueguchi 1,2 , Yuichiro Matsuoka 1,2 , and Maxim Zaitsev 3
1
Center for Information and Neural Networks,
National Institute of Information and Communications
Technology, Suita, Osaka, Japan,
2
Graduate
School of Frontier Biosciences, Osaka University, Suita,
Osaka, Japan,
3
University
Medical Centre Freiburg, Freiburg, Germany
Head motion may have a negative impact on fMRI results
with high spatial resolution at ultra-high magnetic
field. Prospective motion correction (PMC) using
external position information based on optical tracking
is one of the solutions for mitigating motion-related
false positive activation (FPA). We evaluated the PMC
with 1 mm isotropic resolution at 7T. A great
improvement of FPA for phantom study suggest that PMC
using optical tracking system promises an improvement of
motion-induced artifact at 1 mm isotropic resolution. In
a human study only a slight improvement was observed,
which suggests improvements are needed for both the
present study design and possibly the PMC set-up.
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