Doctoral Theses at the Vis group


@PhdThesis{Klemm2016,
Title = {{Interactive Visual Analysis of Population Study Data}},
Author = {Paul Klemm},
School = {Otto-von-Guericke University Magdeburg},
Year = {2016},
Owner = {schumann},
Timestamp = {2016.06.24}
}
@PhdThesis{Koehler2016,
Title = {{Guided qualitative and quantitative Analysis of cardiac 4D PC-MRI blood flow data}},
Author = {Benjamin Köhler},
School = {Otto-von-Guericke University Magdeburg},
Year = {2016},
Owner = {schumann},
Timestamp = {2016.09.28}
}
@PhdThesis{Roessling2016,
Title = {{Vermessung von medizinischen Segementierungen für die chirurgische Interventionsplanung und Dokumentation}},
Author = {Ivo Rössling},
School = {Otto-von-Guericke University Magdeburg},
Year = {2016},
Owner = {schumann},
Timestamp = {2016.02.17}
}
@PhdThesis{Baer2015,
Title = {{Perception Guided Evaluation of 3D Medical Visualizations}},
Author = {Alexandra Baer},
School = {Otto-von-Guericke University Magdeburg},
Year = {2015},
Owner = {schumann},
Timestamp = {2015.10.09}
}
@PhdThesis{Dinse2015,
Title = {A Model-based Cortical Parcellation Scheme for High Resolution 7 Tesla MRI Data},
Author = {Juliane Dinse},
School = {Otto-von-Guericke University Magdeburg},
Year = {2015},
Owner = {schumann},
Timestamp = {2015.08.05}
}
Interactive Visualization and Modification of Digitized Plant Biological Objects
Wolfram Schoor
BIBTeX
@PhdThesis{Schoor2015,
Title = {Interactive Visualization and Modification of Digitized Plant Biological Objects},
Author = {Wolfram Schoor},
School = {Otto-von-Guericke University Magdeburg},
Year = {2015},
Owner = {schumann},
Timestamp = {2015.08.05}
}
@PhdThesis{Adler2014,
Title = {Entwicklung von Verfahren zur interaktiven Stimulation minimal-invasiver Operationsmethoden},
Author = {Simon Adler},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Gasteiger2014,
Title = {Visual Exploration of Cardiovascular Hemodynamics},
Author = {Rocco Gasteiger},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {Rocco Gasteiger},
Timestamp = {2014.02.28}
}
@PhdThesis{Glasser2014,
Title = {{Visual Analysis, Clustering, and Classification of Contrast-Enhanced Tumor Perfusion MRI Data}},
Author = {Sylvia Glaßer},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {schumann},
Timestamp = {2014.09.24}
}
@PhdThesis{Lawonn2014,
Title = {{Illustrative Visualization of Medical Data Sets}},
Author = {Kai Lawonn},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {schumann},
Timestamp = {2014.09.24}
}
@PhdThesis{Moench2014,
Title = {{Context-Aware 3D Model Generation for Biomedical Applications}},
Author = {Tobias Mönch},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {schumann},
Timestamp = {2014.09.24}
}
@PhdThesis{Neugebauer2014,
Title = {{Computergestützte Exploration von Blutfluss in zerebralen Aneurysmen - geometrische Verarbeitung und interaktive Visualisierung}},
Author = {Mathias Neugebauer},
School = {Otto-von-Guericke University Magdeburg},
Year = {2014},
Owner = {schumann},
Timestamp = {2014.09.24}
}
@PhdThesis{Moench2011,
Title = {Konzeption, Entwicklung und Evaluierung chirurgischer Trainingssysteme},
Author = {Jeanette Mönch},
School = {Otto-von-Guericke University Magdeburg},
Year = {2011},
Owner = {schumann},
Timestamp = {2014.03.05}
}
GPU-based Medical Image Segmentation and Registration
Oliver Fluck
BIBTeX
@PhdThesis{Fluck2010,
Title = {GPU-based Medical Image Segmentation and Registration},
Author = {Oliver Fluck},
School = {Otto-von-Guericke University Magdeburg},
Year = {2010},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Muehler2010,
Title = {Animationen und Explorationstechniken zur Unterstützung der chirurgischen Operationsplanung},
Author = {Konrad Mühler},
School = {Otto-von-Guericke University Magdeburg},
Year = {2010},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Oeltze2010,
Title = {{PhD Thesis - Visual Exploration and Analysis of Perfusion Data}},
Author = {Steffen Oeltze},
School = {Otto-von-Guericke University Magdeburg},
Year = {2010},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Apelt2009,
Title = {Bestimmung der Kontrastempfindlichkeit im Mammogramm und ihre Bedeutung für die bildbasierte Befundung},
Author = {Dörte Apelt},
School = {Otto-von-Guericke University Magdeburg},
Year = {2009},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Tietjen2009,
Title = {Illustrative Visualisierungstechniken zur Unterstützung der präoperativen Planung von chirurgischen Eingriffen},
Author = {Christian Tietjen},
School = {Otto-von-Guericke University Magdeburg},
Year = {2009},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Bade2008,
Title = {Interaktive und dynamische Visualisierung für die chirurgische Ausbildung und Interventionsplanung},
Author = {Ragnar Bade},
School = {Otto-von-Guericke University Magdeburg},
Year = {2008},
Owner = {schumann},
Timestamp = {2014.03.05}
}
@PhdThesis{Teutsch2007,
Title = {Model-based Analysis and Evaluation of Point Sets from Optical 3D-Laser-Scanners},
Author = {Christian Teutsch},
School = {Otto-von-Guericke University Magdeburg},
Year = {2007},
Owner = {schumann},
Timestamp = {2014.03.05}
}

Jeanette Mönch

Szenariobasierte Konzeption, Entwicklung und Evaluierung chirurgischer Trainingssysteme
imgp6480.jpg
Jeanette Mönch
Computer-based training systems increasingly support the conventional medical education and further education. In the surgical field they are applied to convey anatomical basics or to train therapy decision making and treatment.

Own experiences during the development of surgical training systems were gained through the conception and implementation of LiverSurgeryTrainer and SpineSurgeryTrainer. The conception and development of both systems is described in this paper, whereas the didactical concept and scenario-based design are in the focus.

The intention of this work was the blueprint of recommendations for the conception, development and evaluation of surgical e-learning systems. The recommendations combine own experiences during the development of surgical training systems as well as existing guidelines. They are adapted to the special requirements of surgical systems and their users. The recommendations shall help other developers to select appropriate methods for the conception and development of surgical education and training systems and to apply them. Essential aspects are the application of the scenario-based design, didactical conception and case-based learning.
Download: Jeanette's thesis as PDF
Date of defense: July 8th, 2011
News/Press:With an excellent presentation, Jeanette nicely rounded up her Phd thesis on the conceptual design of surgical training systems. She developed guidelines for the didactical conception, development, and evaluation of computer based surgical training and learning systems. Together with Konrad Mühler and Kerstin Kellermann, she implemented these guidelines in the development of the LiverSurgeryTrainer and the SpineSurgeryTrainer. The LiverSurgeryTrainer supports the training of preoperative decisions in liver surgery based on a representative set of case data. The SpineSurgeryTrainer conveys anatomical knowledge, therapeutical options and decision criteria for the planning and training of interventions in spine surgery. The commission with the reviewers Prof. Marc Hassenzahl and Prof. Winfried Marotzki lead by Prof. Dietmar Rösner assessed her overall achievements with the very good grade “Magna Cum Laude”.

Konrad Mühler

Animationen und Explorationstechniken zur Unterstützung der chirurgischen Operationsplanung
ASCII
Konrad Mühler
The main scope of this thesis is the development of new techniques to support the surgical intervention planning. The focus concentrates on techniques for the exploration of anatomical 3d scenes. A new technique to select good viewpoints in such scenes automatically was invented and, e.g., used to generate good camera paths in animations and to cluster similar viewpoints. To provide additional textual information visualizations, techniques for automatic annotation of 2d and 3d scenes with a broad range of styles were developed.

Furthermore, a framework for the automatic generation of animations was established and the concept of keystates was introduced to facilitate the definition process of animations and the reuse of visualizations.

The developed techniques were integrated and evaluated in a new surgical training environment: the LiverSurgeryTrainer. The gained knowledge regarding the design of user interfaces of surgical applications was used to create a first style guide for such applications.

For the fast prototyping of medical applications, theMedical Exploration Toolkit was developed. Integrated in the development environment MeVisLab this toolkit supports an efficient prototyping of applications for clinical use with a lot of state of the art visualization and interaction techniques.
Download:Konrad's thesis as PDF
Website: http://phd.kfiles.de
Here you can find more information, data and videos of Konrad's thesis
Photos Photos from Konrad's defense
Date of defense: June 28th, 2010
News/Press: With an excellent presentation Konrad nicely rounded up his Phd thesis on computer-assisted surgery. Konrad developed and refined techniques for animation, viewpoint determination and annotation of 2d slices and 3d models thus supporting the use of 3d models for surgical education and training. Together with Christian Tietjen he integrated his development in the METK - an efficient extension to Mevislab which supports the fast development of surgical applications. A major achievement of his work was the concept and realization of the LiverSurgeryTrainer - a system which directly supports the training of preoperative decisions in liver surgery based on a representative set of case data.

The commission with external reviewers Prof. Thomas Ertl and Prof. Karl-Heinz Höhne lead by Prof. Dietmar Rösner assessed his overall achievements with the best possible grade “Summa Cum Laude”.

Steffen Oeltze

Visual Exploration and Analysis of Perfusion Data
8153819845.jpg
Steffen Oeltze
Perfusion data are dynamic medical image image data which characterize the regional blood flow in tissue. These data bear a great potential in medical diagnosis, since diseases can be better distinguished and detected at an earlier stage compared to static image data. The thesis at hand focuses on Magnetic Resonance (MR) perfusion data and their analysis in ischemic stroke diagnosis and in the early detection and diagnosis of Coronary Heart Disease (CHD). When appropriate, examples from breast tumor diagnosis are consulted to illustrate the flexibility of the developed visual exploration and analysis techniques. The transferability to further application fields of dynamic imaging and to imaging modalities other than MR are outlined at the end of the thesis.

For each voxel in a perfusion dataset, a time-intensity curve specifies the accumulation and washout of a contrast agent. Parameters derived from these curves characterize the perfusion and have to be integrated for diagnosis. The diagnostic evaluation of this multiparameter data is challenging and time-consuming due to its complexity. In clinical routine, the evaluation is based on a side-by-side display of single-parameter visualizations whose interpretation demands a considerable cognitive effort to scan back and forth for comparing corresponding regions. Hence, sophisticated visualization techniques are required that generate an integrated display of several parameters thereby accelerating the evaluation. In this thesis, color-, texture- and glyph-based multiparameter visualizations for the integrated display of several perfusion parameters are presented.
Download: Steffen's thesis as PDF
Photos Photos from Steffen's defense
Date of defense: June 7th, 2010
News/Press: Steffen Oeltze has defended his Phd thesis “Visual Exploration and Analysis of Perfusion Data”. Steffen dealt with the visual exploration and visual analysis of perfusion data and their applications in the diagnosis of the coronary heart disease, in breast tumor and cerebral stroke diagnosis. To tackle clinically relevant problems in a uniform way, he developed a pipeline including preprocessing, data analysis and visual exploration. Steffen has cooperated with the VRVis in Vienna and the visualization group in Bergen as well as with colleagues from Fraunhofer MEVIS . Also several clinical partners were involved in this endeavor. Specific results have been published already in IEEE TVCG and IEEE TMI as well as EuroVis. The thesis was graded with the highest possible “Summa Cum Laude”.
External reviewers have been Prof. Helwig Hauser (Bergen, Norway) and Prof. Frits Post (Delft, The Netherlands) .

Doerte Apelt

Bestimmung der Kontrastempfindlichkeit im Mammogramm und ihre Bedeutung für die bildschirmbasierte Befundung
promo_doerte.jpg
Doerte Apelt
ABSTRACT
Download: Doerte's thesis as PDF
Date of defense: November 13th, 2009

Christian Tietjen

Illustrative Visualisierungstechniken zur Unterstützung der präoperativen Planung von chirurgischen Eingriffen

Christian Tietjen
Diese Arbeit beschäftigt sich mit der Anwendung illustrativer Visualisierungstechniken zur Unterstützung der präoperativen Planung von chirurgischen Eingriffen. Hierzu werden relevante Arbeiten aus den Gebieten des Non-Photorealistic Rendering (NPR), der Informationsvisualisierung und der illustrativen Visualisierung untersucht und die vorgestellten Ansätze auf ihre Vor- und Nachteile hin untersucht.

Im Einzelnen werden hierzu Verfahren zur Darstellung mittels Silhouetten, Punktiertechnik (Stippling) und Schraffurtechnik (Hatching) vorgestellt. Des Weiteren wird ein echtzeitfähiges Verfahren zur illustrativen Schattierung ganzer Szenen entwickelt. Um die chirurgischen Fragestellungen zu unterstützen und die generellen Nachteile von 3D- und schichtbasierten Visualisierungen auszubessern, wurden ebenfalls verschiedene Techniken entwickelt. Um der mangelnden Übersicht in Schichtdaten entgegenzuwirken, wird als Übersichtsdarstellung über alle Schichten der so genannte LIFTCHART vorgestellt. Des Weiteren werden verschiedene Techniken zur Lokalisierung von Zielstrukturen und zur Darstellung von Sicherheitsabständen um Strukturen entwickelt. Zur Sicherstellung der Sichtbarkeit einzelner Strukturen werden der Cut Away und der Section View verwendet.

Die in dieser Arbeit entwickelten Verfahren werden so konzipiert, dass sie zur Interventionsplanung im klinischen Alltag verwendet werden können. Hierbei wurde mit der HNO-Chirurgie des Universitätsklinikums Leipzig kooperiert. Es wurde eine Anwendung entwickelt, die direkt von HNO-Chirurgen zur präoperativen Planung genutzt werden kann. Diese Anwendung – der NECKSURGERYPLANNER (NSP) – wurde den HNO-Chirurgen zur Verfügung gestellt. Die Erfahrungen, die die Chirurgen beim täglichen Umgang mit den Visualisierungstechniken sammeln, können so genutzt werden, um die Techniken noch weiter zu verfeinern.
Photos Photos from Christian's defense
Date of defense: March 9th, 2009

Christian Teutsch

Model-based Analysis and Evaluation of Point Sets from Optical 3D Laser Scanners

Christian Teutsch
The digitalization of real-world objects is of vital importance in various application domains. This method is especially applied in industrial quality assurance to measure the geometric dimension accuracy. Furthermore, geometric models are the very foundation of contemporary three-dimensional computer graphics. In addition to create new models by using a modeling suite, the use of 3D laser scanners has recently become more and more common. To reconstruct objects from laser scan data, usually very large data sets have to be processed. In addition, the generated point clouds usually contain a considerable amount of errors. Therefore, it is necessary to optimize the data for further processing.

Compared to algorithms that interactively manipulate point clouds through an approximation with polygonal meshes, we aim to automatically correct each measurement individually and directly integrate the methods into the measurement process. In addition to traditional methods which usually assume point clouds as unstructured, this work introduces techniques for the extraction of common data structures from optical 3D scanners. Based on this information, procedures are developed to enable automatable procedures of scan data optimization and evaluation. The feasibility of the proposed methods is shown at the example of different real-world objects and industrial applications.
Download: Christian's thesis as PDF
Homepage: http://www.cteutsch.de/
Date of defense: 2007

Ragnar Bade

Interaktive und dynamische Visualisierung für die chirurgische Ausbildung und Interventionsplanung

Ragnar Bade
Challenges of computer based intervention planning are the dynamic visualization of individual patient anatomy and the reduction of visualization artifacts due to medical imaging and image analysis.

In this thesis, I analyze techniques for high quality surface extraction appropriate for the visualization of image analysis results of three-dimensional patient anatomy.
Based on this analysis I present two efficient methods (Diamond Constraint Smoothing and Multi-level Partition of Unity Implicits (MPUIs)) tailored for surface mesh extraction from image analysis results.

To support the efficient exploration of three-dimensional patient anatomy, I evaluate mouse-based interaction techniques. To further support the interactive exploration and to allow the generation of standardized dynamic visualizations, I present a script-based approach.

All developed methods and techniques are combined in the conception and implementation of the Liver Surgery Trainer a computer-based training system for therapy decision making and intervention planning in liver surgery.
Download: Ragnar's thesis as PDF
Photos Photos from Ragnar's defense
Date of defense: 2008