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Abstract #0875

Image-based respiratory motion compensation for CMRA in patients with coronary artery disease

Markus Henningsson 1 , Kostas Bratis 1 , Eike Nagel 1 , and Rene Botnar 1

1 Division of Imaging Sciences and Biomedical Engineering, King's College London, London, United Kingdom

Respiratory motion remains a major impediment in a substantial amount of patients undergoing coronary magnetic resonance angiography. In this work, we show preliminary clinical results from an inline implementation of image-based respiratory motion correction and gating in 25 patients with coronary artery disease. The motion compensation consisted of left-right and foot-head translational correction and diminishing variance gating assuming 50% scan efficiency. The images were compared to gold standard CT and X-ray and yielded a per vessel specificity of 92% and sensitivity of 98%, and per patient specificity of 86% and sensitivity of 94%.

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