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Abstract #4427

Centric View-ordering Variable-density Sampling with Motion Correction for Quantitative Susceptibility Mapping

Yuguang Meng1 and Deqiang Qiu1,2
1Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, United States, 2Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA, United States

Synopsis

Keywords: Motion Correction, Motion Correction

Motivation: Centric view-ordering variable-density (centric VD) sampling has potential advantages for motion correction but has not been well studied in QSM.

Goal(s): To establish a robust QSM acquisition protocol with highly undersampled k-space.

Approach: The performance of centric VD sampling in both image magnitude and phase was assessed by simulation and in vivo 3D QSM.

Results: Centric VD sampling strategy has the advantage over regular sampling with similar sampling rate for both motion-corrected magnitude and phase images from simulation, and improved intraclass correlation coefficients for QSM with a short acquisition.

Impact: This work provides a fast robust QSM acquisition protocol for reducing measurement sensitivity to motion.

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Keywords