Abstract #0547

Whole-Heart Cardiovascular Magnetic Resonance Angiography (CMRA) with iNAV-based Non-Rigid Motion-Corrected Reconstruction at 0.55T

Carlos Castillo-Passi^1,2,3, Michael G. Crabb¹, Camila Muñoz¹, Karl P. Kunze^1,4, Radhouene Neji ^1,4, Pablo Irarrazaval^2,3,5, Claudia Prieto^1,3,5, and Rene M. Botnar^1,2,3,5

¹School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, ²Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, ³Millennium Institute for Intelligent Healthcare Engineering, Santiago, Chile, ⁴MR Research Collaborations, Siemens Healthcare Limited, Camberley, United Kingdom, ⁵Electrical Engineering Department, Pontificia Universidad Católica de Chile, Santiago, Chile

Synopsis

Keywords: Heart, Low-Field MRIIn this work, we demonstrate the feasibility of free-breathing whole-heart magnetic resonance angiography (CMRA) at 0.55T. We implemented an image navigator (iNAV)-based non-rigid motion-corrected reconstruction with 100% respiratory scan efficiency and patch-based low-rank (PROST) denoising. The research sequence was validated on three healthy subjects, showing that whole-heart CMRA provides good depiction of the coronary arteries at 0.55T in under 6 minutes scan time.

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