Abstract #1482
Non-rigid continuous motion correction in abdominal imaging
Xingfeng Shao 1 , Xucheng Zhu 1 , Feiyu Chen 2 , and Kui Ying 3
1
Department of Engineering Physics, Tsinghua
University, Beijing, China,
2
Department
of Biomedical Engineering, Tsinghua University, Beijing,
China,
3
Department
of Engineering physics, Tsinghua University, Beijing,
China
In abdominal imaging, non-rigid and continuous motion
artifacts can be introduced because of breathe and
intestinal peristalsis movement. To reduce this kind of
motion artifacts, we use COCOA to detect and discard
motion corrupted data under PROPELLER trajectory, then
use SPIRiT to reconstruct the k-space. To evaluate our
method, simulated data was generated by adding non-rigid
continuous motion to a reference image. After applying
both proposed method and traditional COCOA to the
simulated data, results show that simulated motion can
be effectively reduced with our method comparing to
traditional COCOA. Conclusion can be made that combining
COCOA with PROPELLER and SPIRiT can effectively reduce
non-rigid continuous motion in abdominal imaging, which
is better than traditional COCOA.
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