Abstract #1959

Wearable Seismocardiography as a Quick Screen for Thoracic Aorta Flow Abnormalities Necessitating 4D Flow MRI

Ethan M. I. Johnson¹, J. Alex Heller², Daniel Gordon³, Flori Garcia Vicente², Alex J Barker⁴, Mozziyar Etemadi^1,2, and Michael Markl^1,3

¹Biomedical Engineering, Northwestern University, Evanston, IL, United States, ²Anesthesiology, Northwestern University, Chicago, IL, United States, ³Radiology, Northwestern University, Chicago, IL, United States, ⁴Radiology, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States

Seismocardiography, the measurement and analysis of forces and accelerations from the beating heart that propagate through the chest wall, can yield insights about cardiac and hemodynamic health. In subjects with pathological or deranged blood flow in the thoracic aorta, the characteristics of SCG accelerations change as a result of the altered flow. Here, we use 4D flow MRI to investigate the specific SCG changes that are associated with abnormal aortic flow, and we consider the potential to use SCG as a quick screen for need of a comprehensive 4D flow MR examination.

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