Adler2012b
@inproceedings{Adler2012b,
author = {Simon Adler and Ivo Rössling and Marlen Fröhlich and Cora Wex and Lars Dornheim and Rüdiger Mecke},
title = {Echtzeitanalyse und Visualisierung kritischer Abstände für die die minimal-invasive Chirurgiesimulation},
booktitle = {Proceedings der 11. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC)},
year = {2012},
month = {11}
}
Rahner2012
bild- oder objekt-basiert.
Das Skalpell-Werkzeug ermöglicht die Partitionierung einer Segmentierung, indem entlang nutzer-definierter
Pfade auf der Bildebene Schnittoperationen durchgeführt werden. Über ein Mal-Werkzeug können bild-basiert, analog
zu bekannten Zeichen-Applikationen, Teile einer Segmentierung markiert werden, die dann einer separaten Partition
zugeordnet werden.
Objekt-basiert arbeitet das Cutter-Werkzeug, mit dem Trennpfade direkt auf einem Segmentierungs-Mesh eingezeichnet
und zur Partitionierung genutzt werden können. Mithilfe des objekt-basierten ThinCut-Werkzeugs können
Schnitte an automatisch berechneten lokal dünnsten Verbundstellen einer Segmentierung vorgenommen werden.
Eine erste Nutzerstudie zeigt, dass Anwender effizient und effektiv Segmentierungen mittels der Werkzeuge
nachbearbeiten können. Gegenüber manuellen Nachbearbeitungen konnten stets, teils hohe, Zeitersparnisse unter Nutzung
der Werkzeuge erzielt werden.
@inproceedings{Rahner2012,
author = {Sebastian Rahner and Ivo Rössling and Lars Dornheim and Jana Dornheim and Bernhard Preim},
title = {Effiziente Partitionierungstechniken für die interaktive Nachbearbeitung medizinischer Segmentierungen},
booktitle = {Proceedings der 11. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC)},
year = {2012},
month = {11}
}
Mueller2012
METHODS: CT scans were taken as part of the standardized staging investigations. Using these image data, 30 lymph nodes were defined and segmented. The segmentations were carried out with the newly developed software called 'NeckSegmenter'. After obtaining informed consent from the patient, neck dissection was performed and the excised lymph nodes underwent analysis of their true volume. The datasets were compared with each other and put in correlation with the segmented volumes.
RESULTS: Pearson's correlation index showed a higher correlation of the segmented volumes (r = 0.7979) with the true volumes than the results generated via diameter-based equation (r = 0.7974). Furthermore, the diameter-generated volumes show clearly too high volumes at 130% (confidence interval: 107.7-156.7%). The volumes generated with the segmentation are at 89.18% (confidence interval: 73.52-108.16%).
CONCLUSION: The data show a higher reliability for volumes estimated by the segmentation-based approach than the widely used diameter-based approach.
@article{Mueller2012,
author = {Stefan Mueller and Gunnar Wichmann and Lars Dornheim and Ivo Roessling and Julia Bertolini and Bernhard Preim and Andreas Dietz and Andreas Boehm},
title = {Different approaches to volume assessment of lymph nodes in computer tomography scans of head and neck squamous cell carcinoma in comparison with a real gold standard.},
journal = {ANZ Journal of Surgery},
year = {2012},
month = {09},
pages = {565--581},
doi = {http://dx.doi.org/10.1111/j.1445-2197.2012.06238.x}
}
Adler2012
[BibTeX]
@inproceedings{Adler2012,
author = {Simon Adler and Lars Dornheim and Ivo Rössling and Jana Dornheim and Marcus Buser and Rüdiger Mecke},
title = {Planungs- und Testumgebung für neue Methoden in der Minimalinvasiven Chirurgie},
booktitle = {Tagungsband 15. IFF-Wissenschaftstage 2012},
publisher = {Fraunhofer IRB Verlag},
year = {2012},
month = {06},
pages = {333--339}
}
Moerig2010
Vol. 4 (4) , pp. 539-556
@article{Moerig2010,
author = {Marc Mörig and Ivo Rössling and Stefan Schirra},
title = {On Design and Implementation of a Generic Number Type for Real Algebraic Number Computations Based on Expression Dags},
journal = {Mathematics in Computer Science},
year = {2011},
month = {09},
volume = {4},
number = {4},
pages = {539-556},
doi = {http://dx.doi.org/10.1007/s11786-011-0086-1}
}
Rahner2011
[BibTeX]
@inproceedings{Rahner2011,
author = {Sebastian Rahner and Ivo Rössling and Lars Dornheim},
title = {Interaktive Korrektur Medizinischer Segmentierungen unter Anwendung Effizienter Partitionierungstechniken},
booktitle = {Tagungsband 14. IFF-Wissenschaftstage 2011},
publisher = {Fraunhofer IRB Verlag},
year = {2011},
month = {06},
pages = {203--209}
}
Roessling2011a
Vol. 6689 Information Processing in Computer-Assisted Interventions , pp. 1-12
The surgeon needs to process all available information in mind and virtually compile a mental patient model of the target anatomy. 3D visualizations of tomographic data may improve perception of spatial relationships. However, discussions with clinical practicians reveal that parameterization of advanced visual effects tend to be cumbersome and resulting visualizations are often too complex and not dedicated to specific diagnostic or treatment planning questions. Moreover, they will add valuable alternative views, but cannot replace all the other diagnostic sources.
We describe long-term experiences on developing and refining a software for ENT surgery planning and documentation. Regarding 3D visualizations, it turns out to be superior to generate sequences of rather simple 3D views directly supporting specific treatment questions, instead of presenting many anatomic structures simultaneously. Developing software for clinical practice thereby benefits from a thorough understanding of the target scenarios and the "visual questions" they raise. The second focus is on the seamless integration of the different diagnostic modalities, findings, and therapy decisions into a common electronic document. We report on the actual clinical use of the system and discuss how it fits into the surgical planning work flow.
@inproceedings{Roessling2011a,
author = {Ivo Rössling and Jana Dornheim and Lars Dornheim and Bernhard Preim and Andreas Boehm},
title = {The Tumor Therapy Manager -- Design, Refinement and Clinical Use of a Software Product for ENT Surgery Planning and Documentation},
booktitle = {Information Processing in Computer-Assisted Interventions},
publisher = {Springer Berlin / Heidelberg},
year = {2011},
month = {06},
volume = {6689},
pages = {1-12},
doi = {http://dx.doi.org/10.1007/978-3-642-21504-9_1}
}
Roessling2011
and familiar visualizations as a basis for their crucial decisions. Discussions with clinical practicians reveal that parameterization of visual effects is too cumbersome and resulting visualizations are often too complex.
We describe and discuss long-term experiences on developing, testing, and refining image analysis and visualization techniques for ENT surgery planning based on CT data. While visual quality and a faithful rendition of spatial relations indeed are essential, it turned out to be superior to generate sequences of rather simple 3D visualizations directly supporting specific treatment questions instead of presenting many anatomic structures simultaneously. We report on the actual clinical use of the system and discuss how it changed the surgical planning workflow.
@inproceedings{Roessling2011,
author = {Ivo Rössling and Jana Dornheim and Lars Dornheim and Bernhard Preim and Andreas Boehm},
title = {The Tumor Therapy Manager and its Clinical Impact},
booktitle = {EuroGraphics},
year = {2011},
month = {04}
}
Adler2011
In der vorliegenden Arbeit erweitern wir zuvor statische individuelle 3DModelle der Kopf-Hals-Region um die Fähigkeit zu anatomisch möglichen Bewegungen. Neben der Bewegung des Knochenapparates wird auch die gleichzeitig stattfindende Deformation der verbundenen Weichteile berücksichtigt, welche durch Feder-Masse-Modelle modelliert wird. Im Ergebnis zeigen wir einen Software-Prototypen, mit dem aus Segmentierungen automatisch ein dynamisches Patientenmodell der Kopf-Hals-Region erzeugt wird, dessen Strukturen (Knochen, Blutgefäße, Muskeln) in Echtzeit interaktiv anatomisch plausibel bewegt werden können.
@inproceedings{Adler2011,
author = {Simon Adler and Ivo Rössling and Lars Dornheim},
title = {Erzeugung und Simulation eines dynamischen 3D-Modells der Kopf-Hals-Region aus CT-Daten},
booktitle = {Bildverarbeitung für die Medizin (BVM)},
publisher = {Springer Verlag},
year = {2011},
month = {03}
}
Helwig2010
Vol. 5971 Algorithm Engineering , pp. 58-126
@inproceedings{Helwig2010,
author = {Helwig, Sabine and Hüffner, Falk and Rössling, Ivo and Weinard, Maik},
title = {Chapter 3. Selected Design Issues},
booktitle = {Algorithm Engineering},
publisher = {Springer Berlin / Heidelberg},
year = {2010},
month = {10},
volume = {5971},
pages = {58-126},
doi = {http://dx.doi.org/10.1007/978-3-642-14866-8_3}
}
Dornheim2010a
Vol. 5 (6) , pp. 565-581
METHODS: A semi-automatic lymph node segmentation method was developed using a 3D Stable Mass Spring Model (SMSM), based on parallel simulation of the shape model on CT scan images. The models are started across the whole dataset at all potential lymph node positions, but will only adapt to the data where a lymph node is found. The node positions can be determined by an evaluation of the model's quality of fit.
RESULTS: Systematically chosen lymph nodes in 5 CT datasets, including enlarged, necrotic, fuzzy-bounded and deformed lymph nodes were used to evaluate the segmentation algorithm performance. A test set of 29 lymph nodes taken from 4 typical lymph node regions were included. All lymph nodes were detected automatically, while an additional 31% false positive (n=9) candidates were detected. The average calculation time was 2 minutes per dataset. The segmentation accuracy was comparable to the inter-observer variance of human experts.
CONCLUSIONS: Clinically relevant lymph nodes were detected within a few minutes and provided sufficient accuracy to demonstrate the feasibility of a new segmentation method. The test data were diverse and the robust results suggest potential applicability to many kinds of lymph node abnormalities, except for extremely degenerated lymph nodes.
@article{Dornheim2010a,
author = {Lars Dornheim and Jana Dornheim and Ivo Rössling},
title = {Complete Fully Automatic Model-based Segmentation of Normal and Pathological Lymph Nodes in CT Data},
journal = {International Journal for Computer Assisted Radiology and Surgery},
year = {2010},
month = {09},
volume = {5},
number = {6},
pages = {565--581},
doi = {http://dx.doi.org/10.1007/s11548-010-0530-8}
}
Roessling2010b
Vol. 5 (6) , pp. 633-646
METHODS: Our method is inspired from computational geometry and based on a surface mesh representation. The computation takes all primitives (points, edges, faces) into account and organizes them efficiently in a spatial tree structure. We followed the generic design paradigm in order to achieve maximum flexibility.
RESULTS: The generic approach allows for a variety of intervention-relevant distance measures to be computed, using only a single type of data structure. For shortest distance, our approach in empirical tests turned out to be more efficient than previous methods from medical application literature. Besides the numerical value, also its defining geometric primitives are determined.
CONCLUSIONS: The presented technique is both, fast and flexible. It can be used to interactively derive automatic distance measures for arbitrary mesh-based segmentations. Due to the geometrically exact measurements, it is possible to reliably estimate safety margins, assess possible infiltrations and other clinically relevant measures. To exploit this benefit, the method requires precise segmentations as input data.
@article{Roessling2010b,
author = {Ivo Rössling and Christian Cyrus and Lars Dornheim and Andreas Boehm and Bernhard Preim},
title = {Fast and flexible distance measures for treatment planning},
journal = {International Journal for Computer Assisted Radiology and Surgery},
year = {2010},
month = {08},
volume = {5},
number = {6},
pages = {633--646},
doi = {http://dx.doi.org/10.1007/s11548-010-0519-3}
}
Roessling2010a
@inproceedings{Roessling2010a,
author = {Ivo Rössling and Peter Hahn and Christian Cyrus and Lars Dornheim},
title = {Estimation of the Midsagittal Plane for Sideness Determination of Malignant Structures of Head and Neck},
booktitle = {Eurographics Workshop on Visual Computing for Biology and Medicine (EG VCBM)},
year = {2010},
month = {07},
pages = {109--115}
}
Moench2010
@inproceedings{Moench2010,
author = {Tobias Mönch and Simon Adler and Peter Hahn and Ivo Rössling and Bernhard Preim},
title = {Distance-Aware Smoothing of Surface Meshes for Surgical Planning},
booktitle = {International Workshop on Digital Engineering (IWDE)},
publisher = {ACM},
year = {2010},
month = {06},
pages = {45--51},
doi = {http://dx.doi.org/10.1145/1837154.1837161}
}
Roessling2010
@inproceedings{Roessling2010,
author = {Ivo Rössling and Peter Hahn and Lars Dornheim},
title = {Schätzung der Midsagittalebene zur Bestimmung der Seitenlage maligner Strukturen des Halses},
booktitle = {Bildverarbeitung für die Medizin (BVM)},
publisher = {Springer Verlag},
year = {2010},
month = {03},
pages = {395--399}
}
Dornheim2010
Based on prior work, in this paper we present a noticeably enhanced model-based segmentation method for lymph nodes in CT data, which now can be used also for enlarged and mostly well separated necrotic lymph nodes. Furthermore, the kind of pathological variation can be determined automatically during segmentation, which is important for the automatic TNM classification.
Our technique was tested on 21 lymph nodes from 5 CT datasets, among several enlarged and necrotic ones. The results lie in the range of the inter-personal variance of human experts and improve the results of former work again. Bigger problems were only noticed for pathological lymph nodes with vague boundaries due to infiltrated neighbor tissue.
@inproceedings{Dornheim2010,
author = {Lars Dornheim and Jana Dornheim and Ivo Rössling and Tobias Mönch},
title = {Model-based Segmentation of Pathological Lymph Nodes in CT Data},
booktitle = {Proceedings of SPIE Medical Imaging},
year = {2010},
month = {02},
doi = {http://dx.doi.org/10.1117/12.844557}
}
Moerig2010
@techreport{Moerig2010,
author = {Marc Mörig and Ivo Rössling and Stefan Schirra},
title = {On the Design and Implementation of a Generic Number Type for Real Algebraic Number Computations Based on Expression Dags},
year = {2010},
month = {01},
number = {FIN-001-2010}
}
Dornheim2009
@inproceedings{Dornheim2009,
author = {Lars Dornheim and Jana Dornheim and Ivo Rössling},
title = {Modellbasierte Segmentierung von Halsstrukturen in CT-Daten},
booktitle = {Innovations-Forum: Anwendung der Haptik in der robotergestützten Chirurgie},
year = {2009},
month = {10},
pages = {34-37}
}
Roessling2009
Ausgehend von einer gegebenen Segmentierung in Form eines Dreiecksnetzes stellen wir ein Verfahren vor, das den kürzesten Abstand zwischen zwei anatomischen Strukturen bestimmt. Zur Berechnung werden dabei nicht nur die Punkte sondern alle Primitive herangezogen und in einer speziellen räumlichen Baumstruktur effizient organisiert. Das Verfahren erlaubt durch Austausch des Zielkriteriums auch andere relevante Maße wie den Durchmesser eines Objekts zu bestimmen.
In empirischen Tests stellte sich unser Verfahren als das derzeit effizienteste heraus. Zudem können wir bzgl. der gegebenen Oberflächennetze ein geometrisch korrektes Ergebnis garantieren und erhalten auch die jeweils definierenden geometrischen Primitive.
@inproceedings{Roessling2009,
author = {Ivo Rössling and C. Cyrus and Lars Dornheim and Bernhard Preim},
title = {Effiziente automatische Bestimmung interventionsrelevanter Entfernungsmaße},
booktitle = {Bildverarbeitung für die Medizin (BVM)},
publisher = {Springer Verlag},
year = {2009},
month = {03},
pages = {66--70},
doi = {http://dx.doi.org/10.1007/978-3-540-93860-6_14}
}
Roessling2009a
In dieser Arbeit haben wir allgemeine Kriterien für die Eignung von Visualisierungen von Bemaßungen in interaktiven 3D-Szenen erarbeitet. Daran orientierend haben wir verschiedene Varianten der Darstellung von Abständen und Ausdehnungen anatomischer Strukturen betrachtet und ihr Erscheinungsbild hierzu zweckmäßig parametrisiert. Die Ausprägungen dieser Darstellungsparameter wurden in einer Studie auf ihre visuellen Wirkung hin an Chirurgen evaluiert.
Es zeigte sich, dass die befragten Mediziner höchsten Wert auf Kohärenz und klare Zuordnung der Bemaßung setzten und überraschenderweise dafür sogar Abstriche in der direkten Lesbarkeit in Kauf nahmen.
@inproceedings{Roessling2009a,
author = {Ivo Rössling and C. Cyrus and Lars Dornheim and Peter Hahn and Bernhard Preim and A. Boehm},
title = {Interaktive Visualisierung von Abständen und Ausdehnungen anatomischer Strukturen für die Interventionsplanung},
booktitle = {Bildverarbeitung für die Medizin (BVM)},
publisher = {Springer Verlag},
year = {2009},
month = {03},
pages = {381--385},
doi = {http://dx.doi.org/10.1007/978-3-540-93860-6_77}
}
Gipp2007
@book{Gipp2007,
author = {Béla Gipp and Jöran Beel and Ivo Rössling},
title = {ePassport: The World's New Electronic Passport},
publisher = {CA: CreateSpace.},
year = {2007},
month = {10},
url = {http://www.amazon.com/dp/1434823180}
}
Roessling2004
@mastersthesis{Roessling2004,
author = {Ivo Rössling},
title = {Sprachtheoretische Untersuchungen zu einer Cilianten-Operation},
school = {Otto-von-Guericke University},
year = {2004},
month = {03}
}
Roessling2003
[BibTeX]
@mastersthesis{Roessling2003,
author = {Ivo Rössling},
title = {Kooperative Softwareentwicklung in verteilten Umgebungen},
school = {Otto-von-Guericke University},
year = {2003},
month = {10}
}
Braesel2003
LiSA is a software package for solving deterministic scheduling problems. In the version 2.3 LiSA is now prepared for cooperative development. The report gives an overview on the obtained results. Each newcomer will find neccessary information how to work with LiSA, each advancer can use this report as reference book.
The LiSA-team, the goals of LiSA, the license and the technical background of the software package are described. A short introduction into the used classification and models is given. An overview on the available algorithms is contained, which can be also used outside of LiSA. An example illustrates how LiSA is working. The LiSA file structure is explained and it is described in detail, how new algorithms can be inserted. Finally, the components of the cooperative development are explained.
@techreport{Braesel2003,
author = {Heidemarie Bräsel and Lars Dornheim and Sandra Kutz and Marc Mörig and Ivo Rössling},
title = {LiSA - A Library Of Scheduling Algorithms},
year = {2003},
month = {06},
number = {34/2003}
}