Abstract #2071

Helical Flow of Superior Vena Cava Helical Flow in Healthy Young Males: a 4D Flow MRI Study

Huaxia Pu¹, Haoyao Cao², Yubo Fan³, Jinge Zhang¹, Zhenlin Li¹, Zhan Liu², Liqing Peng¹, Tinghui Zheng², Xiaoyue Zhou⁴, and Ning Jin⁵

¹Department of Radiology, West China Hospital, Sichuan University, Chengdu, China, ²Department of Applied Mechanics, Sichuan University, Chengdu, China, ³Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China, ⁴MR Collaboration, Siemens Healthineers Ltd, Shanghai, China, ⁵Siemens Medical Solutions USA, Chicago, IL, United States

The existence of helical flow in the superior vena cava (SVC) is not well understood in vivo. 4D flow MRI data of the SVC and brachiocephalic veins (BVs) were acquired in 8 healthy young males. SVC hemodynamic parameters, including velocity, pathlines, streamlines, and flow waveforms, were measured using a specialized post-processing software. Helical flow was present in the normal SVC. The flow pathlines from the right and left BVs formed helical flows, respectively, with two development types: twining and untwining. These findings may elucidate the occurrence and development of potential SVC disease.

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