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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