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Abstract #2671

Simultaneous Contrast-Free 3D Aortic Lumen and Vessel Wall Imaging at 0.55T at systole and diastole

Matías Ignacio Paredes1, Carlos Castillo-Passi1,2,3, Karl Kunze4, Rene Botnar1,2,3,5, and Claudia Prieto1,2,5
1Millennium Institute for Intelligent Healthcare Engineering, Santiago, Chile, 2School of Biomedical Engineering, King's College London, London, United Kingdom, 3Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile, 4MR Research Collaborations, Siemens Healthcare Limited, Camberley, United Kingdom, 5School of Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile

Synopsis

Keywords: Low-Field MRI, Low-Field MRI, cardiovascular,aortic imaging

Motivation: Bright-blood and black-blood imaging are relevant for assessing aortic pathologies. Research on aortic imaging at 0.55T which could potentially make MRI more accessible and affordable is scarce.

Goal(s): To evaluate the feasibility of a novel non-contrast enhanced simultaneous bright- and black-blood aorta imaging at 0.55T at systole and diastole.

Approach: Five healthy volunteers were scanned at 0.55T with the proposed accelerated and non-rigid motion-compensated sequence (iT2prep-BOOST). Adiabatic, MLEV4 and MLEV8 T2-preparation pulses were compared.

Results: Good image quality was obtained for simultaneous acquisition of 3D bright- and black-blood aorta imaging at 0.55T at systole and diastole with the proposed iT2prep-BOOST and MLEV8 T2-preparation.

Impact: The proposed approach enables 3D simultaneous bright- and black-blood aorta imaging at 0.55T during a fast free-breathing scan and thus shows promise for the detection of different aortic diseases, potentially making aortic MRI more accessible and affordable.

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Keywords