Abstract #2577
Motion Detection and Correction Using Non-marker-attached Optical System during MRI Scanning
Jin Liu 1 , Huijun Chen 2 , Zechen Zhou 2 , Jinnan Wang 3 , and Chun Yuan 1
1
University of Washington, Seattle, WA,
United States,
2
Tsinghua
University, Beijing, China,
3
Philips
Research North America, NY, United States
Motion artifact is a major challenge affecting the image
quality of MRI. Navigator based motion correction
usually need extra scan time with sequence dependence,
while existing optical motion tracking systems need
markers for accurate motion measurements. Therefore, we
proposed a non-marker-attached optical motion tracking
system based on structured light to measure the absolute
distance, which has the merits of high accuracy,
sequence independence and no patient interaction. This
study demonstrated that the motion can be accurately
identified with the proposed method and then corrected
retrospectively by deleting and resynthesizing the
corresponding corrupted k-space lines.
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