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Abstract #0983

Simultaneous dark blood late gadolinium enhancement and MR angiography for atrial scar detection

Dongyue Si1, Yanfang Wu2, Jie Yin2, Rui Guo3, Jingjing Xiao4, Bowei Liu1, Xue Lin2, Peng Gao2, Deyan Yang2, Quan Fang2, Jianwen Luo1, Daniel A. Herzka5, and Haiyan Ding1
1Center for Biomedical Imaging Research (CBIR), Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing, China, 2Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China, 3Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States, 4Department of Medical Engineering, Xinqiao Hosptial, Army Medical University, Chongqing, China, 5National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States

Cardiovascular magnetic resonance can provide functional and structural assessment of the left atrium and pulmonary veins, providing highly relevant pre- and post-procedural information in the treatment of atrial fibrillation (AF). In this study, an independent navigator-gated simultaneous dark blood late gadolinium enhancement and MR angiography sequence was developed for atrial scar detection. In 4 post AF ablation subjects, comparison with conventional phase sensitive inversion recovery images indicated that both scar-to-blood and blood-to-myocardium contrast were improved. Excellent correlation was observed between the scar measured by the proposed sequence and the low voltage areas observed with electroanatomical mapping.

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