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Abstract #2684

Error Evaluation & Data Correction for the Outlier Signals in Q-Ball Imaging: Comparison of Orientation Distribution Function

Yen-Wei Cheng1, Ming-Choung Chou2, Nai-Yu Cho3, Cheng-Yu Chen3, Hsiao-Wen Chung

1 Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan; 2Department of Medical Imaging & Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan; 3Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan

Corrupted signals in diffusion-weighted images due to hardware instability and physiological-related fluctuations are observed in Q-ball imaging. We proposed two suitable methods to restore the lost signals in DWIs and reduce the ODF errors in this study. The corrupted signals were replaced by its repeated scan to get the gold standard. The mean ODF errors between damaged QBI and gold standard QBI before correction were 2.32%. However, the mean ODF errors were reduced to 0.51% and 0.45% after correction by symmetrical compensation method and neighboring interpolation method. Therefore, we concluded that neighboring interpolation was suitable adjunct for QBI data processing.