Visual Exploration of Blood Flow Data, Bernhard Preim
Sprache des Titels:
Blood flow data is acquired either by measurements or by simulations. The acquisition of blood flow data is motivated by decisions in the diagnosis and treatment planning in vascular diagnosis. Blood flow data represents a challenge for the visual exploration since for each voxel a 3D vector is available that characterizes the direction and speed of blood flow. Moreover, the blood flow changes during the cardiac cycle. In the talk, a number of visualization and interaction techniques are presented that enable a focussed and guided exploration of the flow. These techniques include a lens-based interaction (FlowLens), the use of widgets that are guided by anatomical features and serve to probe the flow, clustering techniques that reduce the large number of streamlines to a few representatives. While these techniques primarily serve neuroradiologists, the characterization of vortices in measured cardiac flow is related to some cardiac diseases, such heart valve defects.