Ph.D. Gallery

Image Processing for Fluoroscopy Guided Atrial Fibrillation Ablation Procedures Abstract Atrial fibrillation is a common heart arrhythmia and is associated with an increased risk of stroke. The current state-of-the-art treatment option is the minimally invasive catheter ablation. During such ...

Diffusion Tensor Imaging Analysis of the Visual Pathway with Application to Glaucoma Abstract Glaucoma is an optic neuropathy affecting the entire visual system. The world-wide prevalence of glaucoma is estimated to be 60.5 million people. The visual disorder caused by glaucoma can reach comp...

Robust Single Shot Structured Light Abstract In this thesis a new robust approach for Single-Shot Structured Light 3D scanning is developed. As the name implies, this measurement principle requires only one image of an object, illuminated with a suitable pattern, to reconstruct the shape and ...

Machine Learning Methods in Computed Tomography Image Analysis Abstract Lymph nodes have high clinical relevance because they are often affected by cancer, and also play an important role in all kinds of infections and inflammations in general. Lymph nodes are commonly examined using computed...

Model-Constrained Non-Rigid Registration in Medicine Abstract The aim of image registration is to compute a mapping from one image's frame of reference to another's, such that both images are well aligned. Even when the mapping is assumed to be rigid (only rotation and translation) this can b...

Quantitative Computed Tomography Abstract Computed Tomography (CT) is a wide-spread medical imaging modality. Traditional CT yields information on a patient's anatomy in form of slice images or volume data. Hounsfield Units (HU) are used to quantify the imaged tissue properties. Due to the po...

Time-of-Flight - A New Modality for Radiotherapy Abstract In this work, one of the first approaches utilizing so-called Time-of-Flight cameras for medical applications is presented. Using Time-of-Flight cameras it is feasible to acquire a 3-D model in real-time with a single sensor. Several s...

Interventional Perfusion Imaging Using C-arm Computed Tomography: Algorithms and Clinical Evaluation Abstract A stroke is a medical emergency which requires immediate diagnosis and treatment. For several years, image-based stroke diagnosis has been assisted using perfusion computed tomography...

Patient-Specific Cerebral Vessel Segmentation with Application in Hemodynamic Simulation Abstract Cerebral 3-D rotational angiography has become the state-of-the-art imaging modality in modern angio suites for diagnosis and treatment planning of cerebrovascular diseases, e. g. intracranial an...

Statistical Intensity Prior Models with Applications in Multimodal Image Registration Abstract Deriving algorithms that automatically align images being acquired from different sources (multimodal image registration) is a fundamental problem that is of importance to several active research ar...