Christina Biermann

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In this article, we present a new approach for the automatic acquisition and cross-linking of cases from heterogeneous knowledge sources like manuals, articles, and mailing lists. The cases are destinated for a textual case-based reasoning system. We develop a case generation strategy including basic transformation processes, a shallow feature extraction,(More)
To gain a new insight into the elastic properties of the thoracic aorta in patients without aortic diseases using electrocardiographically (ECG)-gated dual-source (DS) CT. 56 subjects with no cardiovascular disease, selected from 2,700 people undergoing ECG-gated DSCT examination, were divided into three groups according to their age. CT data were(More)
Simulation of arterial stenting procedures prior to intervention allows for appropriate device selection as well as highlights potential complications. To this end, we present a framework for facilitating virtual aortic stenting from a contrast computer tomography (CT) scan. More specifically, we present a method for both lumen and outer wall segmentation(More)
OBJECTIVES The aim of this study was to evaluate time efficiency and diagnostic reproducibility of an advanced vessel analysis software for diagnosis of carotid artery stenosis. MATERIAL AND METHODS 40 patients with suspected carotid artery stenosis received head and neck DE-CTA as part of their pre-interventional workup. Acquired data were evaluated by 2(More)
Noninvasive methods to diagnose and differentiate acute cellular rejection from acute tubular necrosis or acute calcineurin inhibitor toxicity are still missing. Because T lymphocytes play a decisive role in early states of rejection, we investigated the suitability and feasibility of antibody-mediated contrast-enhanced ultrasound by using microbubbles(More)
In this article, we present a new approach for the automatic acquisition and cross-linking of textual cases from heterogeneous knowledge sources like manuals, articles, and mailing lists. We develop a case generation strategy including basic transformation processes, a shallow feature extraction, and the automatic creation of cross-references. We discuss(More)
The purpose of this study was to evaluate the influence of advanced software assistance on the assessment of carotid artery stenosis; particularly, the inter-observer variability of readers with different level of experience is to be investigated. Forty patients with suspected carotid artery stenosis received head and neck dual-energy CT angiography as part(More)
Vollautomatische Stent-Planung und Stent-Simulation zur Unterstützung der minimal-invasiven Behandlung von abdominalen Bauchaortenaneurysmen Jan Egger1,2, Christina Biermann1,3, Stefan Großkopf1, Christian Hopfgartner4, Dominik Fritz1 and Bernd Freisleben2 1Siemens Healthcare, Germany; 2Philipps-Universität Marburg, Germany; 3Eberhard-Karls-Universität(More)
Kurzfassung. Bei der Befundung und Visualisierung von Blutgefäßen ist deren Centerline von zentraler Bedeutung. Die Unterscheidung zwischen unverzweigten Abschnitten des Gefäßes und Verzweigungsbereichen ermöglicht den Einsatz spezialisierter und sehr effizienter Algorithmen zur modellbasierten Extraktion der Centerline. In diesem Artikel wird ein robustes(More)