Abstract #1221

Advantages of Dual-Venc 4D flow MRI in the evaluation of cerebral aneurysms

Susanne Schnell¹, Maria Aristova¹, Matthew B Potts², Babak S Jahromi², Liliana Ma¹, Alireza Vali¹, Amer A Syed¹, Michael C Hurley³, Michael Markl^1,4, and Sameer A Ansari⁵

¹Radiology, Northwestern University, Chicago, IL, United States, ²Neurological Surgery, Northwestern University, Chicago, IL, United States, ³Radiology and Neurological Surgery, Northwestern University, Chicago, IL, United States, ⁴Biomedical Engineering, Northwestern University, Evanston, IL, United States, ⁵Radiology, Neurological Surgery and Neurology, Northwestern University, Chicago, IL, United States

We applied and investigated the benefits of using kt-GRAPPA accelerated dual-venc 4D flow MRI in five patients who presented with cerebral aneurysm between 4 and 12mm (smallest and largest dimension). Velocity values were systematically compared with the high-venc-only part of the same acquisition using correlation and histogram analysis. Blood flow was visualized with streamlines and quality was visually assessed. Results show that dual-venc 4D flow MRI provides refined information on slow flow and recirculating flow in cerebral aneurysms. Future studies will assess the feasibility of advanced hemodynamic measures obtained from dual-venc 4D flow MRI as predictive imaging biomarkers.

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