Paper Info
Title
Combined Visualization of Wall Thickness and Wall Shear Stress for the Evaluation of Aneurysms
Abstract
For an individual rupture risk assessment of aneurysms, the aneurysm's wall morphology and hemodynamics provide valuable information. Hemodynamic information is usually extracted via computational fluid dynamic (CFD) simulation on a previously extracted 3D aneurysm surface mesh or directly measured with 4D phase-contrast magnetic resonance imaging. In contrast, a noninvasive imaging technique that depicts the aneurysm wall in vivo is still not available. Our approach comprises an experiment, where intravascular ultrasound (IVUS) is employed to probe a dissected saccular aneurysm phantom, which we modeled from a porcine kidney artery. Then, we extracted a 3D surface mesh to gain the vessel wall thickness and hemodynamic information from a CFD simulation. Building on this, we developed a framework that depicts the inner and outer aneurysm wall with dedicated information about local thickness via distance ribbons. For both walls, a shading is adapted such that the inner wall as well as its distance to the outer wall is always perceivable. The exploration of the wall is further improved by combining it with hemodynamic information from the CFD simulation. Hence, the visual analysis comprises a brushing and linking concept for individual highlighting of pathologic areas. Also, a surface clustering is integrated to provide an automatic division of different aneurysm parts combined with a risk score depending on wall thickness and hemodynamic information. In general, our approach can be employed for vessel visualization purposes where an inner and outer wall has to be adequately represented.
Year
DOI
Venue
2014
10.1109/TVCG.2014.2346406
Visualization and Computer Graphics, IEEE Transactions  
Keywords
Field
DocType
biomedical ultrasonics,computational fluid dynamics,data visualisation,feature extraction,flow simulation,haemodynamics,medical image processing,3D aneurysm surface mesh extraction,4D phase-contrast magnetic resonance imaging,CFD simulation,IVUS,aneurysm evaluation,aneurysm wall hemodynamics,aneurysm wall morphology,computational fluid dynamics,distance ribbons,hemodynamic information,intravascular ultrasound,noninvasive imaging technique,porcine kidney artery,risk score,rupture risk assessment,saccular aneurysm phantom,vessel visualization,visual analysis,wall shear stress visualization,wall thickness visualization,Aneurysm,Brushing and Linking,Focus + Context,IVUS,Wall Shear Stress,Wall Thickness
Biomedical engineering,Computer vision,Brushing and linking,Intravascular ultrasound,Computer science,Shear stress,Visualization,Imaging phantom,Aneurysm,Artificial intelligence,Solid modeling,Computational fluid dynamics
Journal
Volume
Issue
ISSN
20
12
1077-2626
Citations 
PageRank 
References 
9
0.50
21
Authors
4
Name
Order
Citations
PageRank
Glaber, S.190.50
Kai Lawonn219929.75
Hoffmann, T.3142.36
Martin Skalej410211.54