10 Result(s)
within
Georgios Sakas
Health Informatics
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Article
Open AccessLeveraging spatial uncertainty for online error compensation in EMT
Electromagnetic tracking (EMT) can potentially complement fluoroscopic navigation, reducing radiation exposure in a hybrid setting. Due to the susceptibility to external distortions, systematic error in EMT ne...
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Article
High-precision evaluation of electromagnetic tracking
Navigation in high-precision minimally invasive surgery (HP-MIS) demands high tracking accuracy in the absence of line of sight (LOS). Currently, no tracking technology can satisfy this requirement. Electromag...
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Article
Planning nonlinear access paths for temporal bone surgery
Interventions at the otobasis operate in the narrow region of the temporal bone where several highly sensitive organs define obstacles with minimal clearance for surgical instruments. Nonlinear trajectories fo...
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Chapter and Conference Paper
Visual Comparison of 3D Medical Image Segmentation Algorithms Based on Statistical Shape Models
3D medical image segmentation is needed for diagnosis and treatment. As manual segmentation is very costly, automatic segmentation algorithms are needed. For finding best algorithms, several algorithms need to...
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Chapter and Conference Paper
Path Planning for Multi-port Lateral Skull Base Surgery Based on First Clinical Experiences
Our research project investigates a multi-port minimally-traumatic approach for lateral skull base surgery, where the surgical target shall be reached through up to three drill canals. For this purpose, an acc...
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Chapter and Conference Paper
Erweiterung modellbasierter Segmentierung durch lokale Deformationskriterien
Modellbasierte Ansätze sind heutzutage Stand der Technik zur automatischen Organsegmentierung in medizinischen Bilddatensätzen. In dieser Arbeit wird ein Verfahren vorgestellt, welches die modellbasierte Segme...
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Chapter and Conference Paper
Segmentation and Navigation Support of Clinical Data Sets to Simulate the Bronchoscopy and Rhinoscopy
A training and simulation system for therapy planning is developed based on patient specific imaging data. A real endoscope is used for navigation through the virtual patient. For this purpose sensors were bui...
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Chapter and Conference Paper
Prospective Head Motion Compensation for MRI by Updating the Gradients and Radio Frequency During Data Acquisition
Subject motion appears to be a limiting factor in numerous magnetic resonance imaging (MRI) applications. For head imaging the subject’s ability to maintain the same head position for a considerable period of ...
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Chapter and Conference Paper
Volume Definition Tools for Medical Imaging Applications
Central focus of this work, are techniques used to improve time and interaction needed for a user when defining one or more structures. These techniques involve interpolation methods for the manual volume defi...
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Chapter and Conference Paper
Ein System zur Generierung, Manipulation und Archivierung von Texturen — Textur-Editor —
Die Oberflächen realer Objekte sind in der Regel nicht strukturlos, haben also außer einer Farbe noch weitere Eigenschaften, die sogen. Textur. So prägen beispielsweise farbliche bzw. geometrische Variationen das...
