Flow Vector Visualization

In volume visualization, generally the data at each point in the volume lattice is a scalar quantity. Recently, new MR imaging techniques that provide diffusion images of water molecules produce information that is a vector in each data point, and new types of visualization techniques for such vector field data become necessary. For instance, one approach would try to produce continuous "flow-field-lines" through the volume that follow the vectors in the 3D space. Such visualization techniques present unique line patterns that can help to identify sources, sinks, and vortices in the volume of vector data (Fig. 9) [33,34,38,39].

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