A5042096795- Advanced MRI Techniques and Applications
- Sociology and Education Studies
- Cardiovascular Function and Risk Factors
- Cardiovascular Health and Disease Prevention
- Public Administration and Political Analysis
- Cardiac Valve Diseases and Treatments
- Building Energy and Comfort Optimization
- German Social Sciences and History
- Aortic Disease and Treatment Approaches
- Cardiac Imaging and Diagnostics
- Medical Image Segmentation Techniques
- Integrated Energy Systems Optimization
- Advanced Neuroimaging Techniques and Applications
- MRI in cancer diagnosis
- Climate Change Policy and Economics
- Wind and Air Flow Studies
- Stock Market Forecasting Methods
- European history and politics
- Computer Graphics and Visualization Techniques
- Energy Efficiency and Management
- Retinal Imaging and Analysis
- Retinal Diseases and Treatments
- Medical Imaging Techniques and Applications
- Solar Energy Systems and Technologies
- Renewable Energy and Sustainability
Fachklinik 360°
2025
University Hospital Magdeburg
2015-2024
Oeko Institut
2021-2024
Otto-von-Guericke University Magdeburg
2015-2023
University of Copenhagen
2023
Fraunhofer Institute for Solar Energy Systems
2015-2020
Jena University Hospital
2017-2018
European University Viadrina
2017
Fraunhofer Institute for Digital Medicine
2012
We examined prevalence and progression of retinopathy in dependence on diabetes duration order to estimate the probability progression.In a retrospective cohort-analysis from an academic outpatient department endocrinology metabolic diseases we analyzed 17461 consultations 4513 patients with DM2 1987 2014. 50.3% (n=2272) had at least one documented result funduscopy.25.8% (20.2% non-proliferative, 4.7% proliferative, 0.7% were not classified, 0.1% blindness). The was 1.1% diagnosis, 6.6%...
Cardiovascular diseases (CVD) are the leading cause of death worldwide. Their initiation and evolution depends strongly on blood flow characteristics. In recent years, advances in 4D PC-MRI acquisition enable reliable time-resolved 3D measuring, which allows a qualitative quantitative analysis patient-specific hemodynamics. Currently, medical researchers investigate relation between characteristic patterns like vortices different pathologies. The manual extraction evaluation is tedious...
This paper presents an overview of policy frameworks for district heating (DH) in Europe. We develop a classification aspects addressing DH, comprising regulation ownership, prices, metering, consumer grid connection, third party access as well support schemes and carbon taxes. builds on existing literature expert assessments collected online survey interviews. The relevance the lies giving comprehensive picture DH 23 European countries. For overview, countries are clustered along assigned...
Abstract Cardiac four‐dimensional phase‐contrast magnetic resonance imaging (4D PC‐MRI) acquisitions have gained increasing clinical interest in recent years. They allow to non‐invasively obtain extensive information about patient‐specific hemodynamics, and thus a great potential improve the diagnosis, prognosis therapy planning of cardiovascular diseases. A dataset contains time‐resolved, three‐dimensional blood flow directions strengths, making comprehensive qualitative quantitative data...
Abstract A large body of research suggests that better-looking people are associated with various positive outcomes, an effect labeled the beauty premium. However, vast majority this evidence has been demonstrated in WEIRD (Western, Educated, Industrialized, Rich, and Democratic) countries, neglecting role cultural mechanisms translating into socio-economic outcomes. We close gap by leveraging differences embedded essential artifact culture: language. Specifically, we establish a method for...
Nearly zero-energy buildings (nZEBs) will be the standard in Europe future. How nZEBs are defined and therefore designed varies amongst due to different national definitions/ legislations. Furthermore, finding optimal building design technology sets for under boundary conditions (climate, availability of renewable energy sources on-site etc.) types (residential, non-residential) is still a challenge. Many studies field focus on active technologies energies buildings. However, effects passive...
Social networks shape individuals' lives, influencing everything from career paths to health. This paper presents a registry-based, multi-layer and temporal network of the entire Danish population 2008 2021. Our maps relationships formed through family, households, neighborhoods, colleagues classmates for approximately 7.2 million individuals with more than 1.4 billion relations between them over course decade. We outline key properties this multiplex network, introducing both an...
Abstract We present an Aortic Vortex Classification (AVOCLA) that allows to classify vortices in the human aorta semi‐automatically. Current medical studies assume a strong relation between cardiovascular diseases and blood flow patterns such as vortices. Such are extracted manually classified according specific, unstandardized properties. employ agglomerative hierarchical clustering group vortex‐representing path lines basis for subsequent classification. Classes based on vortex' size,...
4D flow MRI enables quantitative assessment of helical flow. We sought to generate normal values and elucidate changes (duration, volume, length, velocities rotational direction) jet (displacement, angle) as well wall shear stress (WSS). assessed the temporal existence (THEX), maximum volume (HVmax), accumulated (HVacc), length (HVLacc), forward velocity (maxVfor), circumferential (maxVcirc), direction (RD) (WSS) reported elsewhere using software tool Bloodline in 86 healthy volunteers (46...
Abstract Four‐dimensional phase‐contrast magnetic resonance imaging (4D PC‐MRI) allows the non‐invasive acquisition of time‐resolved, 3D blood flow information. Stroke volumes (SVs) and regurgitation fractions (RFs) are two main measures to assess cardiac function severity valvular pathologies. The rates in forward backward direction through a plane above aortic or pulmonary valve required for their quantification. Unfortunately, calculations highly sensitive towards plane's angulation since...
While it is widely acknowledged that carbon pricing plays an important role in driving the transition towards a low-carbon energy system, its interaction with complementary instruments discussed controversially. The analysis of combining policies has been mostly focused on electricity sector, while buildings sector received only minor interest. In view newly introduced scheme for and transport Germany, we analyze interactions between existing policy assess consistency mix decarbonizing...
Four-dimensional (4D) flow magnetic resonance imaging (MRI) sequences with advanced parallel have the potential to reduce scan time equivalent image quality and accuracy compared standard two-dimensional (2D) MRI. We 4D 2D using a constant pulsatile phantom at 3 T. Two accelerated (GRAPPA2 k-t-GRAPPA5) were evaluated regarding concordance of volumes, velocities, reproducibility as well dependency on measuring plane velocity encoding (Venc). The calculated volumes peak velocities used...
Abstract 4D flow MRI enables quantitative assessment of helical flow. Current methods are susceptible to noise. To evaluate patterns in healthy volunteers and patients with bicuspid aortic valves (BAV) at 1.5 T 3 using pressure-based helix-extraction MRI. Two intraindividual examinations were performed ten (5 females, 32 ± years) 2 BAV different acceleration techniques (kt-GRAPPA centra). Several new parameters for the evaluation volumes [ml], lengths [mm] as well temporal [ms] introduced...
Abstract To compare two broadly used 4D-flow- with a 2D-flow-sequence in healthy volunteers, regarding absolute flow parameters, image quality (IQ), and eddy current correction (ECC). Forty volunteers (42 ± 11.8 years, 22 females) were examined 3T scanner. Thoracic aortic was assessed using 3D-T2w-SPACE-STIR-sequence for morphology accelerated 4D-flow sequences comparison, one k-t undersampling standard GRAPPA parallel-imaging. 2D-flow as reference standard. The custom-made software tool...
Social networks shape individuals' lives, influencing everything from career paths to health. This paper presents a registry-based, multi-layer and temporal network of the entire Danish population in years 2008-2021 (roughly 7.2 mill. individuals). Our maps relationships formed through family, households, neighborhoods, colleagues classmates. We outline key properties this multiplex network, introducing both an individual-focused perspective as well bipartite representation. show how...
To address global problems, intergovernmental collaboration is needed. Modern solutions to these problems often include data-driven methods like artificial intelligence (AI), which require large amounts of data perform well. However, sharing between governments limited. A possible solution federated learning (FL), a decentralised AI method created utilise personal information on edge devices. Instead data, can build their own models and just share the model parameters with centralised server...
Abstract Flow in the great arteries (aorta, pulmonary artery) is normally laminar with a parabolic velocity profile. Eccentric flow jets are linked to various diseases like aneurysms. Cardiac 4D PC‐MRI data provide spatio‐temporally resolved blood information for whole cardiac cycle. In this work, we establish time‐dependent visualization and quantification of jets. For purpose, equidistant measuring planes automatically placed along vessel's centerline. The jet position region highest...