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Abstract #1322

Impact of sub-millimeter isotropic resolution on the visualization of coronary arteries in patients undergoing accelerated whole-heart CMRA

Aurelien Bustin1, Reza Hajhosseiny1, Imran Rashid1, Gastao Cruz1, Ronak Rajani1, Tevfik Ismail1, René Botnar1, and Claudia Prieto1
1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom

The recent integration of undersampled acquisitions with image-navigators and non-rigid motion-correction have enabled free-breathing 3D whole-heart coronary MR angiography (CMRA) with sub-millimeter isotropic resolution in clinically feasible scan times in healthy subjects. The high acceleration factor and spatial resolution however must be balanced with the need for a robust and high-quality image reconstruction. We sought to assess whether this highly accelerated sub-millimeter isotropic resolution contrast-free CMRA framework could reliably improve the visualization of coronary arteries in comparison to lower resolution (and lower acceleration factor) CMRA in patients with suspected coronary artery disease who underwent CT coronary angiography.

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