Konrad Rybacki

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Acute vertebrobasilar occlusion (VBO) is associated with a high risk of stroke and death. Although local thrombolysis may achieve recanalization and improve outcome, mortality is still between 35% and 75%. However, without recanalization the chance of a good outcome is extremely poor, with mortality rates of 80-90%. Early treatment is a fundamental factor,(More)
INTRODUCTION CT perfusion studies play an important role in the early detection as well as in therapy monitoring of vasospasm after subarachnoid hemorrhage. High-flow injections via central venous catheters are not recommended but may sometimes be the only possibility to obtain high-quality images. MATERIALS AND METHODS We retrospectively analyzed our(More)
PURPOSE To evaluate the feasibility of T2' mapping in native kidneys and renal allografts. MATERIALS AND METHODS Following approval of the local ethics committee, 24 renal allograft recipients and 10 control subjects (healthy volunteers) were included in this study. Multi-echo T2 and T2* imaging was performed on a 1.5 Tesla scanner. Allograft recipients(More)
OBJECTIVE This study aimed to create a phantom, which allows reproducible computed tomography perfusion experiments, and to identify the influence of contrast bolus configuration, scan parameters, and scanner hardware on the calculation of perfusion parameters. METHODS A discoid perfusion phantom with centrifugally directed flow was constructed. Brain(More)
OBJECTIVE In vertebrobasilar occlusion, rapid recanalization is the only substantial means to improve the prognosis. We introduced a standard operating procedure (SOP) for interventional therapy to analyze the effects on interdisciplinary time management. METHODS Intrahospital time periods between hospital admission and neuroradiological intervention were(More)
Primate sensory systems subserve complex neurocomputational functions. Consequently, these systems are organised anatomically in a distributed fashion, commonly linking areas to form specialised processing streams. Each stream is related to a specific function, as evidenced from studies of the visual cortex, which features rather prominent segregation into(More)
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