Abstract #1814

Highly-efficient free breathing whole heart CINE MRI with self gated 3D CASPR-TIGER trajectory

Muhammad Usman¹, Gastao Cruz¹, and Claudia Prieto¹

¹Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom

In this work, we propose to use a novel free-running self-gated 3D CArtesian acquisition with Spiral PRofile ordering and TIny Golden angle step for Eddy Current Reduction, so called CASPR-TIGER. Data is acquired continuously under free breathing (no ECG gating, no pre-pulses interruption) using CASPR-TIGER trajectory and 4D volumes (3D+time) are reconstructed from all available data (100% respiratory scan efficiency) using a soft gating technique combined with temporal total variational (TV) constrained iterative SENSE reconstruction. Feasibility of proposed method is demonstrated in three subjects in a 3-3.6 minutes free breathing acquisition.

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