Christina Biermann

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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 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. METHODS 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.(More)
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)
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)
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)
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)
PURPOSE We propose CD3-antibody-mediated contrast-enhanced ultrasonography using human T-lymphocytes for image-based diagnosis of acute allograft rejection (AR) established in a rat renal transplantation model. MATERIALS AND METHODS 15 minutes after tail vein injection of 30 × 10(6) human T-lymphocytes, contrast media/microbubbles conjugated with an(More)