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Issue No. 06 - November/December (2010 vol. 16)
ISSN: 1077-2626
pp: 1339-1347
Roy van Pelt , Eindhoven University of Technology
Javier Oliván Bescós , Philips Healthcare
Marcel Breeuwer , Philips Healthcare
Rachel E. Clough , King's College London; Guy's and St Thomas' NHS foundation
M. Eduard Gröller , Vienna University of Technology
Bart ter Haar Romenij , Eindhoven University of Technology
Anna Vilanova , Eindhoven University of Technology
Insight into the dynamics of blood-flow considerably improves the understanding of the complex cardiovascular system and its pathologies. Advances in MRI technology enable acquisition of 4D blood-flow data, providing quantitative blood-flow velocities over time. The currently typical slice-by-slice analysis requires a full mental reconstruction of the unsteady blood-flow field, which is a tedious and highly challenging task, even for skilled physicians. We endeavor to alleviate this task by means of comprehensive visualization and interaction techniques. In this paper we present a framework for pre-clinical cardiovascular research, providing tools to both interactively explore the 4D blood-flow data and depict the essential blood-flow characteristics. The framework encompasses a variety of visualization styles, comprising illustrative techniques as well as improved methods from the established field of flow visualization. Each of the incorporated styles, including exploded planar reformats, flow-direction highlights, and arrow-trails, locally captures the blood-flow dynamics and may be initiated by an interactively probed vessel cross-section. Additionally, we present the results of an evaluation with domain experts, measuring the value of each of the visualization styles and related rendering parameters.
4D MRI blood-flow, Probing, Flow visualization, Illustrative visualization, Phase-contrast cine MRI

M. Breeuwer et al., "Exploration of 4D MRI Blood Flow using Stylistic Visualization," in IEEE Transactions on Visualization & Computer Graphics, vol. 16, no. , pp. 1339-1347, 2010.
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