Abstract #4396

Free-Breathing 3D T1 Mapping of the Whole-Heart Using Low-Rank Tensor Modeling

Paul Kyu Han¹, Debra E. Horng¹, Yoann Petibon¹, Jinsong Ouyang¹, Nathaniel Alpert¹, Georges El Fakhri¹, and Chao Ma¹

¹Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States

T₁ of the myocardium is an emerging quantitative biomarker for a variety of heart diseases. However, T₁ mapping is challenging in the heart due to the cardiac and respiratory motion. To overcome this issue, T₁ mapping methods utilizing ECG triggering with breath-hold or respiratory control using bellow or navigators have been developed in the past. Recently, low-rank tensor-based approach has been proposed for MR to enable image reconstruction at extremely high acceleration factors, and has demonstrated promising results. This work presents a low-rank tensor-based approach for free-breathing 3D T₁ mapping of the whole-heart.

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