Comparison Between 3D Phase Contrast MRI and Computational Fluid Dynamics in Unruptured Intracranial Aneurysms.

Joppe Schneiders¹, Pim van Ooij², Joost van den Berg¹, Ed van Bavel², Aart J. Nederveen¹, Charles B. Majoie¹

In this study we compare time averaged 4D MRI of intracranial aneurysms and surrounding vessels with simulations created using Computational Fluid Dynamics(CFD). The vessel geometry is obtained from high resolution 3D rotational angiography and inflow velocity is derived from 2D PC MR velocity measurements. We compared 4 patients with unruptured aneurysms, visualising the intra-aneurysmal flow pattern. With both modalities it is possible to visualise intra-aneurysmal flow patterns, with good agreement between the two different techniques.