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Abstract #0976

Sub-millimeter, Non-contrast 3D Coronary MRA for Assessment of Arterial Stenosis: Initial Clinical Experience and Comparison with Coronary CT Angiography

Imran Rashid1,2, Aurelien Bustin1, Teresa Correia1, Giulia Ginami1, Radhouene Neji 3, Karl P Kunze3, Tevfik F Ismail1,2, Ronak Rajani2, Claudia Prieto1, and Rene M Botnar1

1School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2Department of Cardiology, Guy's and St Thomas' Hospital, London, United Kingdom, 3MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom

Coronary CT angiography (CCTA) is an established diagnostic imaging modality for the assessment of patients with suspected coronary disease, where high resolution (sub-millimeter) imaging is required for the accurate detection and quantification of stenosis. To date, achieving such resolutions using coronary MRA (CMRA) has not been possible due to prohibitively long scan times. However, accelerated imaging using image-based navigators and non-rigid motion compensated patch-based undersampled reconstruction techniques have enabled sub-millimeter coronary MR imaging in acceptable acquisition times. In this feasibility study, we demonstrate that accelerated sub-millimeter CMRA holds promise for the detection and exclusion of significant coronary artery stenosis.

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