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Abstract #0074

A Novel Accelerated 3D Phase-Unwrapping Method Based on Subdivided Arrays and Polynomial Modeling with Application: Dixon Water-Fat Separation

Junying Cheng1, Qian Zheng2, Man Xu1, Liang Liu1, Yan Cui1, Biaoshui Liu3, Yong Zhang1, Yanqiu Feng4, and Jingliang Cheng1
1Department of MRI, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China, 2College of Software Engineering, Zhengzhou University of Light Industry, Zhengzhou, China, 3Department of Radiation Oncology, Sun Yat-sen University CancerCenter, Guangzhou, China, 4School of Biomedical Engineering and Guangdong Provincial Key Laboratory of Medical Image Processing, Southern Medical University, Guangzhou, China

Synopsis

Keywords: Data Processing, Data Processing, phase imaging, phase unwrapping, Dixon technique

In this work, a novel robust and accelerated phase-unwrapping method is presented. The proposed method firstly introduces an artificial volume compartmentalization to break down the large-scale unwrapping problems, and then uses the phase partition method to cluster the phase into blocks to be paralleled unwrapped first, and residual-voxel to be unwrapped later. The simulated and in vivo datasets experiments have demonstrated that the proposed method allows for a reduction of the unwrapping problem size, a speed-up for handling large datasets, and obtains the accurate phase results under different SNRs and phase-change levels.

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