Archives: Thesis

685 to 690 of 761

21NOV 2011
Ph.D. Gallery
Volker Daum
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 be a quite challenging task to accomplish between different […]
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14SEP 2011
Ph.D. Gallery
Michael Balda
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 polychromatic nature of X-rays in CT, the HU values for a specific […]
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14SEP 2011
Ph.D. Gallery
Christian Schaller
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 systems for managing motion within radiotherapy are presented. There are five major […]
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09SEP 2011
Ph.D. Gallery
Andreas Fieselmann
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 (CT) and perfusion magnetic resonance imaging (MRI). A contrast agent bolus is injected and time-resolved imaging, at typically […]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 (CT) and perfusion magnetic resonance imaging (MRI). A contrast agent bolus is injected and time-resolved imaging, at typically […]
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04JUL 2011
Ph.D. Gallery
Martin Spiegel
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 aneurysms. Among other reasons, it is believed that the incidence of aneurysms is due to the local prevalent hemodynamic pattern. […]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 aneurysms. Among other reasons, it is believed that the incidence of aneurysms is due to the local prevalent hemodynamic pattern. […]
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28JAN 2011
Ph.D. Gallery
Christoph Gütter
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 areas in image analysis, computer vision, and medical imaging. In particular, the accurate estimation of deformations in multimodal […]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 areas in image analysis, computer vision, and medical imaging. In particular, the accurate estimation of deformations in multimodal […]
Read more about Christoph Gütter