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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