TY - JOUR A1 - Zachow, Stefan A1 - Hege, Hans-Christian A1 - Deuflhard, Peter T1 - Computer assisted planning in cranio-maxillofacial surgery JF - Journal of Computing and Information Technology Y1 - 2006 VL - 14(1) SP - 53 EP - 64 ER - TY - JOUR A1 - Benger, Werner A1 - Bartsch, Hauke A1 - Hege, Hans-Christian A1 - Kitzler, Hagen A1 - Shumilina, Anna A1 - Werner, Annett T1 - Visualizing neuronal structures in the human brain via Diffusion Tensor MRI JF - Int. Journal of Neuroscience Y1 - 2006 VL - 116(4) SP - 461 EP - 514 ER - TY - JOUR A1 - Maye, Alexander A1 - Wenckebach, Thomas A1 - Hege, Hans-Christian T1 - Visualization, reconstruction, and integration of neuronal structures in digital brain atlases JF - Int. Journal of Neuroscience Y1 - 2006 VL - 116(4) SP - 431 EP - 459 ER - TY - GEN A1 - Petz, Christoph A1 - Weinkauf, Tino A1 - Streckwall, Heinrich A1 - Salvatore, Franceso A1 - Noack, Bernd R. A1 - Hege, Hans-Christian T1 - Vortex Structures at a Rotating Ship Propeller Y1 - 2006 PB - Presented at the 24th Annual Gallery of Fluid Motion exhibit, held at the 59th Annual Meeting of the American Physical Society, Division of Fluid Dynamics, Tampa Bay ER - TY - JOUR A1 - Ziegler, Günter M. A1 - Hege, Hans-Christian A1 - Duda, Georg T1 - Neue Bilder für die Medizin? JF - DFN-Mitteilungen Y1 - 2005 VL - 13(3) SP - 163 EP - 167 ER - TY - GEN A1 - Hege, Hans-Christian T1 - Hintergrundinformationen zum Artikel ‘Neue Bilder für die Medizin?’ Y1 - 2005 PB - DFG-Research Center Matheon, Report, 19 pages ER - TY - CHAP A1 - Sahner, Jan A1 - Weinkauf, Tino A1 - Hege, Hans-Christian ED - Brodlie, K. ED - Duke, D. ED - Joy, K. T1 - Galilean invariant extraction and iconic representation of vortex core lines T2 - Proc. Eurographics / IEEE VGTC Symposium on Visualization (EuroVis ’05) Y1 - 2005 U6 - https://doi.org/10.2312/VisSym/EuroVis05/151-160 SP - 151 EP - 160 CY - Leeds, UK ER - TY - CHAP A1 - Theisel, Holger A1 - Sahner, Jan A1 - Weinkauf, Tino A1 - Hege, Hans-Christian A1 - Seidel, Hans-Peter T1 - Extraction of parallel vector surfaces in 3D time-dependent fields and application to vortex core line tracking T2 - Proc. IEEE Visualization 2005 Y1 - 2005 SP - 559 EP - 566 CY - Minneapolis, USA ER - TY - CHAP A1 - Colditz, Carsten A1 - Coconu, Liviu A1 - Deussen, Oliver A1 - Hege, Hans-Christian ED - Buhmann, Erich ED - Paar, Philip ED - Bishop, Ian ED - Lange, Eckart T1 - Real-time rendering of complex photorealistic landscapes using hybrid level-of-detail approaches T2 - Trends in Real-Time Landscape Visualization and Participation Y1 - 2005 SP - 97 EP - 106 PB - Wichmann Verlag ER - TY - CHAP A1 - Coconu, Liviu A1 - Colditz, Carsten A1 - Hege, Hans-Christian A1 - Deussen, Oliver ED - Buhmann, Erich ED - Paar, Philip ED - Bishop, Ian ED - Lange, Eckart T1 - Seamless integration of stylized renditions in computer-generated landscape visualization T2 - Trends in Real-Time Landscape Visualization and Participation Y1 - 2005 SP - 88 EP - 96 PB - Wichmann Verlag CY - Heidelberg ER - TY - CHAP A1 - Clasen, Malte A1 - Hege, Hans-Christian ED - Buhmann, Erich ED - Paar, Philip ED - Bishop, Ian ED - Lange, Eckart T1 - Realistic illumination of vegetation in real-time environments T2 - Trends in Real-Time Landscape Visualization and Participation Y1 - 2005 SP - 107 EP - 114 PB - Wichmann Verlag ER - TY - JOUR A1 - Werner, Armin A1 - Deussen, Oliver A1 - Döllner, Jürgen A1 - Hege, Hans-Christian A1 - Paar, Philip A1 - Rekittke, Jörg ED - Buhmann, Erich ED - Paar, Philip ED - Bishop, Ian ED - Lange, Eckart T1 - Lenné 3D walking through landscape plan JF - Trends in Real-Time Landscape Visualization and Participation Y1 - 2005 SP - 48 EP - 59 PB - Wichmann Verlag ER - TY - CHAP A1 - Hege, Hans-Christian T1 - Visual analysis of molecular dynamics data using geometric and topological methods T2 - Forum "Math for Industry" 2014 Y1 - 2014 VL - 57 SP - 45 EP - 46 PB - Institute of Mathematics for Industry, Kyushu University CY - Fukuoka, Japan ER - TY - CHAP A1 - Bonneau, Georges-Pierre A1 - Hege, Hans-Christian A1 - Johnson, Chris R. A1 - Oliveira, Manuel M. A1 - Potter, Kristin A1 - Rheingans, Penny A1 - Schultz, Thomas T1 - Overview and State-of-the-Art of Uncertainty Visualization T2 - Scientific Visualization - Uncertainty, Multifield, Biomedical, and Scalable Visualization N2 - The goal of visualization is to effectively and accurately communicate data. Visualization research has often overlooked the errors and uncertainty which accompany the scientific process and describe key characteristics used to fully understand the data. The lack of these representations can be attributed, in part, to the inherent difficulty in defining, characterizing, and controlling this uncertainty, and in part, to the difficulty in including additional visual metaphors in a well designed, potent display. However, the exclusion of this information cripples the use of visualization as a decision making tool due to the fact that the display is no longer a true representation of the data. This systematic omission of uncertainty commands fundamental research within the visualization community to address, integrate, and expect uncertainty information. In this chapter, we outline sources and models of uncertainty, give an overview of the state-of-the-art, provide general guidelines, outline small exemplary applications, and finally, discuss open problems in uncertainty visualization. Y1 - 2014 SN - 978-1-4471-6496-8 U6 - https://doi.org/10.1007/978-1-4471-6497-5_1 SP - 3 EP - 27 PB - Springer ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Schaller, Jens A1 - Kertzscher, Ulrich A1 - Petz, Christoph A1 - Hege, Hans-Christian A1 - Spuler, Andreas T1 - Reproducibility of Image-Based Analysis of Cerebral Aneurysm Geometry and Hemodynamics: An In-Vitro Study of Magnetic Resonance Imaging, Computed Tomography, and Three-Dimensional Rotational Angiography JF - Journal of Neurological Surgery, Part A: Central European Neurosurgery Y1 - 2013 U6 - https://doi.org/10.1055/s-0033-1342937 VL - 74 IS - 5 SP - 294 EP - 302 ER - TY - JOUR A1 - Sips, Mike A1 - Kothur, Patrick A1 - Unger, Andrea A1 - Hege, Hans-Christian A1 - Dransch, Doris T1 - A Visual Analytics Approach to Multiscale Exploration of Environmental Time Series JF - IEEE Transactions on Visualization and Computer Graphics N2 - We present a Visual Analytics approach that addresses the detection of interesting patterns in numerical time series, specifically from environmental sciences. Crucial for the detection of interesting temporal patterns are the time scale and the starting points one is looking at. Our approach makes no assumption about time scale and starting position of temporal patterns and consists of three main steps: an algorithm to compute statistical values for all possible time scales and starting positions of intervals, visual identification of potentially interesting patterns in a matrix visualization, and interactive exploration of detected patterns. We demonstrate the utility of this approach in two scientific scenarios and explain how it allowed scientists to gain new insight into the dynamics of environmental systems. Y1 - 2012 U6 - https://doi.org/10.1109/TVCG.2012.191 VL - 18 IS - 12 SP - 2899 EP - 2907 ER - TY - JOUR A1 - Weinkauf, Tino A1 - Hege, Hans-Christian A1 - Theisel, Holger T1 - Advected Tangent Curves: A General Scheme for Characteristic Curves of Flow Fields JF - Computer Graphics Forum N2 - We present the first general scheme to describe all four types of characteristic curves of flow fields – stream, path, streak, and time lines – as tangent curves of a derived vector field. Thus, all these lines can be obtained by a simple integration of an autonomous ODE system. Our approach draws on the principal ideas of the recently introduced tangent curve description of streak lines. We provide the first description of time lines as tangent curves of a derived vector field, which could previously only be constructed in a geometric manner. Furthermore, our scheme gives rise to new types of curves. In particular, we introduce advected stream lines as a parameter-free variant of the time line metaphor. With our novel mathematical description of characteristic curves, a large number of feature extraction and analysis tools becomes available for all types of characteristic curves, which were previously only available for stream and path lines. We will highlight some of these possible applications including the computation of time line curvature fields and the extraction of cores of swirling advected stream lines. Y1 - 2012 U6 - https://doi.org/10.1111/j.1467-8659.2012.03063.x VL - 31 IS - 2pt4 SP - 825 EP - 834 ER - TY - CHAP A1 - Heller, Markus O. A1 - Wurl, Alexander A1 - Perka, Carsten A1 - Hege, Hans-Christian T1 - In vivo gluteus medius volume and shape variations across gender and disease status BT - Proceedings of ESB2012 - 18th Congress of the European Society of Biomechanics, Lisbon, Portugal, 1–4 July 2012 T2 - Journal of Biomechanics Y1 - 2012 U6 - https://doi.org/10.1016/S0021-9290(12)70359-7 VL - 45, Suppl. 1 SP - S358 ER - TY - CHAP A1 - Pfister, Hanspeter A1 - Kaynig, Verena A1 - Botha, Charl P. A1 - Bruckner, Stefan A1 - Dercksen, Vincent J. A1 - Hege, Hans-Christian A1 - Roerdink, Jos B.T.M. ED - Hansen, Charles D. ED - Chen, Min ED - Johnson, Christopher R. ED - Kaufman, Arie E. ED - Hagen, Hans T1 - Visualization in Connectomics T2 - Scientific Visualization - Uncertainty, Multifield, Biomedical, and Scalable Visualization N2 - Connectomics is a branch of neuroscience that attempts to create a connectome, i.e., a complete map of the neuronal system and all connections between neuronal structures. This representation can be used to understand how functional brain states emerge from their underlying anatomical structures and how dysfunction and neuronal diseases arise. We review the current state-of-the-art of visualization and image processing techniques in the field of connectomics and describe a number of challenges. After a brief summary of the biological background and an overview of relevant imaging modalities, we review current techniques to extract connectivity information from image data at macro-, meso- and microscales. We also discuss data integration and neural network modeling, as well as the visualization, analysis and comparison of brain networks. Y1 - 2014 SN - 978-1-4471-6496-8 U6 - https://doi.org/10.1007/978-1-4471-6497-5_21 SP - 221 EP - 245 PB - Springer ER - TY - JOUR A1 - Goubergrits, Leonid A1 - Spuler, Andreas A1 - Schaller, Jens A1 - Wiegmann, Nils A1 - Berthe, Andre A1 - Hege, Hans-Christian A1 - Affeld, Klaus A1 - Kertzscher, Ulrich T1 - In vitro study of hemodynamic treatment improvement: Hunterian ligation of a fenestrated basilar artery aneurysm after coiling JF - The International Journal of Artificial Organs N2 - Hunterian ligation affecting hemodynamics in vessels was proposed to avoid rebleeding in a case of a fenestrated basilar artery aneurysm after incomplete coil occlusion. We studied the hemodynamics in vitro to predict the hemodynamic changes near the aneurysm remnant caused by Hunterian ligation. A transparent model was fabricated based on three-dimensional rotational angiography imaging. Arteries were segmented and reconstructed. Pulsatile flow in the artery segments near the partially occluded (coiled) aneurysm was investigated by means of particle image velocimetry. The hemodynamic situation was investigated before and after Hunterian ligation of either the left or the right vertebral artery (LVA/RVA). Since post-ligation flow rate in the basilar artery was unknown, reduced and retained flow rates were simulated for both ligation options. Flow in the RVA and in the corresponding fenestra vessel is characterized by a vortex at the vertebrobasilar junction, whereas the LVA exhibits undisturbed laminar flow. Both options (RVA or LVA ligation) cause a significant flow reduction near the aneurysm remnant with a retained flow rate. The impact of RVA ligation is, however, significantly higher. This in vitro case study shows that flow reduction near the aneurysm remnant can be achieved by Hunterian ligation and that this effect depends largely on the selection of the ligated vessel. Thus the ability of the proposed in vitro pipe-line to improve hemodynamic impact of the proposed therapy was successfully proved. Y1 - 2014 U6 - https://doi.org/10.5301/ijao.5000314 VL - 37 IS - 4 SP - 325 EP - 335 ER -