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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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