Abstract #4320

MRI-Based Computations of Flow Following Endovascular Interventions

Vitaliy L. Rayz¹, Gabriel Acevedo-Bolton¹, Alastair J. Martin¹, Van Halbach², David A. Saloner¹

¹Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States; ²Neurointerventional Radiology, University of California San Francisco, San Francisco, CA, United States

Flow alterations resulting from vascular and endovascular interventions can be assessed with CFD models based on MRA and 4D PC-MRI data. In this study, preoperative and postoperative flow fields were simulated in 3 giant ICA aneurysms considered for treatment with flow-diverter stent in order to induce thrombotic occlusion of the lesions. Computations of the flow prior to and post the procedure were compared with in vivo and in vitro 4D PC-MRI measurements. The results indicate that computational models based on MRI/MRA data can be used to evaluate the efficacy of flow-diverting stents on a patient-specific basis.