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Abstract #3449

Vortex Flow in Left Ventricle Interrupts Efficient Ejection: Demonstration by Vortex Flow Map of Cardiac Cine Magnetic Resonance Imaging

Masateru Kawakubo1, Kenji Fukushima2, Risako Nakao3, Eri Watanabe3, Yamato Shimomiya4, Yasuhiro Goto5, Hitoshi Tadenuma5, Masami Yoneyama6, and Michinobu Nagao2

1Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan, 2Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women’s Medical University, Tokyo, Japan, 3Department of Cardiology, The Heart Institute of Japan, Tokyo Women’s Medical University, Tokyo, Japan, 4Clinical Application Development Marketing Division, Ziosoft Inc., Tokyo, Japan, 5Department of Radiological Service, Tokyo Women’s Medical University, Tokyo, Japan, 6Philips Electronics Japan, Ltd., Tokyo, Japan

Quantitative characterization of vortex flow might be a novel objective tool for evaluating left ventricular (LV) function. We developed the novel technique of vortex flow map (VFM). The VFM based on MR feature tracking can calculate the temporal displacement of the pixels on standard cine MRI. In this study, we analyzed the association with the VFM in LV and ejection fraction. As a result, it is indicated that the strong 3-dimensional vortex flow appears and impairs efficient LV ejection in severe heart failure. And the VFM is a useful tool for the evaluation of the efficiency of LV ejection.

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