Abstract #2069

Abdominal Aortic Aneurysm Prevents Efficient Blood Flow Delivery to Common Iliac Arteries: A study of Hemodynamic Effect of EVAR by 4D Flow.

Masataka Sugiyama¹, Yasuo Takehara¹, Shinji Naganawa², Satoshi Goshima³, Atsushi Nozaki⁴, Tetsuya Wakayama⁴, and Marcus Alley⁵

¹Department of Fundamental Development for Advanced Low Invasive Diagnostic Imaging, Nagoya University, Graduate School of Medicine, Nagoya, Japan, ²Department of Radiology, Nagoya University, Graduate School of Medicine, Nagoya, Japan, ³Department of Radiology, Hamamatsu University School of Medicine, Hamamatsu, Japan, ⁴Applied Science Laboratory Asia Pacific, GE Healthcare Japan, Hino, Japan, ⁵Department of Radiology, Stanford University School of Medicine, Palo Alto, CA, United States

4D Flow MRI were performed for 12 abdominal aortic aneurysm patients who underwent EVAR before and after the treatment. Peak systolic blood flow in the common iliac arteries has significantly increased after EVAR (right: p=0.016, left: p=0.016). The aneurysm might have stored blood like a reservoir in systole and have inhibited the delivery of blood flow to the iliac arteries. The stent placement of EVAR may have repaired the deformed blood flow path and improved the efficiency of blood flow delivery to the periphery. 4D Flow have shown its power for analyzing the hemodynamic effects of EVAR.

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