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Abstract #2448

Dynamic Volumetric MRI using Golden-Angle Variable Density Spiral Acquisition with Sparse Parallel Imaging Reconstruction

Lyu Li 1 , Xiaodong Ma 1 , Pascal Spincemaille 2 , Yi Wang 2,3 , Huijun Chen 1 , and Hua Guo 1

1 Center for Biomedical Imaging Research, Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China, 2 Radiology, Weill Cornell Medical College, New York, United States, 3 Biomedical Engineering, Cornell University, New York, United States

High resolution dynamic volumetric MRI is crucial for the accurate clinical diagnosis. Several studies have proposed some data acquisition and image reconstruction strategies such as TRACER and GRASP. The reconstruction of TRACER is sensitive to motion so breath hold is needed. GRASP is very motion insensitive, but its data acquisition efficiency is not high enough. In this study, we aim to investigate a method combining golden angle variable density spiral data acquisition with sparse and parallel imaging reconstruction, which could achieve high spatial and temporal resolution when free breathing.

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