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Abstract #0637

Optimization of free-breathing spiral cardiac cine imaging at 3T with variable flip angle scheme and region-optimized virtual coils (ROVir)

Kang Yan1, Quan Dou1, Zhixing Wang2, Xue Feng1, and Craig H Meyer1
1University of Virginia, Charlottesville, VA, United States, 2University of Arkansas for Medical Sciences, little Rock, AR, United States

Synopsis

Keywords: Data Acquisition, Acquisition Methods

Motivation: To enhance image quality of free-breathing spiral cardiac cine imaging at 3T, which a particular focus on improving image contrast and reducing artifacts.

Goal(s): This study aims to demonstrate that optimizing both data acquisition and the reconstruction algorithm can enhance overall image quality by improving image contrast and reducing artifacts.

Approach: A variable flip angle scheme based on extended phase graphs (EPG) simulation and a region-optimized virtual coils algorithm were developed.

Results: The in vivo experiments demonstrate that the proposed methods outperform the conventional acquisition and reconstruction methods at 8-fold under-sampling rate.

Impact: Reduced image contrast, along with interference artifacts can restrict the clinical use of free-breathing spiral cardiac cine imaging at 3T. The optimizations presented here offer significant potential to broaden the clinical applicability of this technique at 3T.

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Keywords