Description:
In this case the blood flow in a rigid model of the renal arteries of a patient with stenosis. The anatomical model was reconstructed from contrast-enhanced MRA images and flow conditions were obtained using phase-contrast MR velocity measurements.
The images below show a conventional angiography and a contrast-enhanced MRA demonstrating the renal stenosis:
The images below show the reconstructed model:
The picture below shows the finite element grid used for a CFD simulation. This grid was generated using adaptive background grids to increase the resolution of the mesh in regions of large surface curvature, and reduce the total number of elements in the volume:
A CFD simulation was performed imposing flow rates measured using
phase-contrast MR. These simulations can provide useful clinical
information such as pressure drops across stenosis, which may help
assessing the functional significance of renal stenoses:
