Image Gallery

res01 Fluid dynamics in an extensive subject-specific anatomy of the upper airways.

 

res02 Example of regularised anisotropic filtering: from left to right the original image is progressively filtered more. Top row: image, bottom row: image gradient.

 

res03 Computational haemodynamics of small vessels.

 

res06 A subject-specific anatomy of the upper airways.

 

res07

Example of processing the image gradient field, for i) filtering, ii) contrast enhancement, iii) edge localisation.

 

res08

Geometric description of right nasal cavity, including generation of an average anatomy.

 

res09

 

Geometric multiscale methods used to substitute the complex 3D daughter vessels branching off with 1D reduced order models as boundary conditions.

 

res10Longitudinal study of two patient-specific peripheral bypass grafts, observing and correlating the vascular remodelling with the fluid mechanics.

 

res11res13Kinematics of fluids: particle trajectories, surface shear lines, vortex cores and critical points: meaningful ways of post-processing bio-fluid CFD.

 

res14

Cerebral aneurysms reconstructed from computed tomography angiography.

 

res15Cross section of right nasal cavity (red) and Fourier descriptor representation (black) with increasing number of modes.

 

res16Top row: averaging the nasal passage anatomy of three patients, yielding the population average. Bottom row: anatomy nomenclature.

 

res17Representation of the geometry by cross-sections and their medial axes – colour coded by medial axis thickness or with respect to anatomy location.

 

res18Particle tracking in a peripheral bypass graft. At inflow particles are colour coded red if adjacent to the lumen walls, and blue otherwise. At the proximal outflow a larger portion of red coloured tracers are seen, compared to the distal outflow.

 

res19Post-processing a streamline to identify the osculating plane.

 

res20

Variability in image segmentaion using “clustering” methods. Left column: image; right column: image gradient.

 

res21

Simplification (or filtering) the complex geometry of a right nasal cavity using Fourier descriptors.

 

res22

Segmentation of the nasal passages. Yellow contour is based on voxel resolution. Blue contour is the filtered upsampling of the yellow contour.

 

res23

Mesh independence study for computational haemodynamics simulations.

 

res24Post-processing simulations to look at: cross sections of the velocity profile, surface shear lines and wall shear stress. These measures are correlated to vascular remodelling.

 

Snapshots of videofluoroscopy images, with the bolus segmented in red.

 

Coronal cross-sections of CT scans of different animals. The nasal cavities show impressive inter-species variation, driven by evolutionary adaptation.