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Abstract #4645

Real-Time Adaptive Motion Correction for Coronary MR Angiography

Markus Henningsson1,2, Sergio A. Uribe Arancibia1, Andrea J. Wiethoff1,3, Philip G. Batchelor1, Rene M. Botnar1

1Division of Imaging Sciences, King's College London, London, UK; 2NIHR Biomedical Research Centre at Guys & St Thomas Hospital and Kings College London , London, UK; 3Philips Healthcare, Reigate, UK

Artifacts due to residual coronary motion remain an impediment to diagnostic coronary MRA in a small but substantial amount of patients. The purpose of this study was to investigate a method (AF) that determines a patient specific correction factor which continuously updates throughout the course of the scan. 7 healthy volunteers were scanned and the LCA visibility was analyzed, and the result showed that the AF performs better than a constant 0.6 factor with a navigator on the diaphragm, as well as a 1.0 factor with a navigator on the heart.