Abstract #3440

Dual-venc and single-venc 4D Flow MRI in cerebral aneurysms in comparison to image-based CFD modeling

Joseph Christopher Muskat¹, Sean Rothenberger¹, Ahmadreza Baghaie¹, Sameer A Ansari², Craig Goergen¹, Susanne Schnell³, Michael Markl^3,4, and Vitaliy Rayz¹

¹Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, United States, ²Radiology, Neurological Surgery and Neurology, Northwestern University, Chicago, IL, United States, ³Radiology, Northwestern University, Chicago, IL, United States, ⁴Biomedical Engineering, Northwestern University, Evanston, IL, United States

Blood flow in two cerebral aneurysms was measured with 4D Flow MRI and simulated with image-based Computational Fluid Dynamics (CFD). A dual-venc 4D Flow MRI sequence with a shared reference scan was used in addition to a standard, single-venc 4D Flow acquisition in order to improve the dynamic range of measured velocities. Comparison of the MRI-measured and CFD-simulated flow fields showed that the 4D Flow and CFD methods can complement each other by eliminating modeling errors and augmenting imaging resolution. The dual-venc 4D Flow MRI provided valuable information on recirculating flow patterns that was not available from the single-venc data.

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