Ph.D. Gallery

Browse all posts in the Ph.D. Gallery category.

85 to 90 of 106

05MAR 2012
Ph.D. Gallery
Johannes Feulner
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 tomography (CT). Manually counting and measuring lymph nodes in CT volumes […]
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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. […]
Read more about Martin Spiegel