A5102830962- Advanced X-ray and CT Imaging
- Advanced Neuroimaging Techniques and Applications
- Dental Radiography and Imaging
- Radiation Dose and Imaging
- MRI in cancer diagnosis
- Cerebrovascular and Carotid Artery Diseases
- Acute Ischemic Stroke Management
- Glioma Diagnosis and Treatment
- Dysphagia Assessment and Management
- Esophageal and GI Pathology
- Venous Thromboembolism Diagnosis and Management
- Advanced MRI Techniques and Applications
- Tracheal and airway disorders
- Abdominal Trauma and Injuries
- Radiomics and Machine Learning in Medical Imaging
- Intracranial Aneurysms: Treatment and Complications
- Spine and Intervertebral Disc Pathology
- Bacterial Infections and Vaccines
- Sinusitis and nasal conditions
- Trauma and Emergency Care Studies
- Total Knee Arthroplasty Outcomes
- Peripheral Nerve Disorders
- Pelvic and Acetabular Injuries
- Ultrasound in Clinical Applications
- Medical Imaging and Analysis
University of Cologne
2013-2023
University Hospital Cologne
2014-2022
Centrum für Integrierte Onkologie
2019-2022
LVR-Klinik für Orthopädie Viersen
2009
Abstract Purpose Use of automated perfusion software has gained importance for imaging stroke patients mechanical thrombectomy (MT). We aim to compare four packages: 1) with respect their association 3‑month functional outcome after successful reperfusion MT in comparison visual Cerebral Blood Volume - Alberta Stroke Program Early CT Score (CBV-ASPECTS) and collateral scoring 2) agreement estimation core penumbra volume. Methods This retrospective, multicenter cohort study (2015–2019)...
The study was conducted to compare examination time and artifact vulnerability of whole-body computed tomographies (wbCTs) for trauma patients using conventional or optimized patient positioning.Examination measured in 100 scanned with protocol (Group A: arms positioned alongside the body head neck imaging over trunk imaging) B: flexed on a chest pillow without repositioning). Additionally, influence two different scanning protocols image quality most relevant regions assessed by blinded...
Magnetic resonance imaging (MRI) is currently explored as supplemental tool to monitor disease progression and treatment response in various neuromuscular disorders. We here assessed the utility of a multi-parametric magnetic protocol including quantitative water T2 mapping, Dixon-based proton density fat fraction (PDFF) estimation diffusion tensor (DTI) detect loss spinal motor neurons subsequent muscle damage adult SMA patients.Sixteen patients 13 age-matched controls were enrolled this...
This retrospective study examined the incidence, progression, and clinical relevance of catheter-related thrombosis (CRT) and/or fibrin sheaths presenting as incidental findings on routine staging computed tomography (CT) scans performed in cancer patients.Patients who underwent central venous port catheter (CVC) placement a tertiary care hospital between September 2010 August 2013 were followed up for to five years. Two radiologists assessed presence sheath consensus CT scan. Patient...
Studienziel: Eine Fehlplatzierung von Knie- und Hüftprothesen erhöht das Risiko Frühlockerung Revisionen. Metaanalysen zeigen, dass diese Fehlpositionierungen durch Computernavigation vermindert werden können. Bisher existiert jedoch keine Kosten-Nutzen-Analyse, in der neben dem Nutzen auch die auftretenden Kosten analysiert werden. Fragestellung war daher: Lässt sich verbesserte Implantatausrichtung einer Ausbildungsklinik nachweisen? Welche entstehen Computernavigation? Methode: Die Daten...
Our aim was to evaluate whether improved gray-white matter differentiation in cranial CT by means of 65- keV virtual monoenergetic images enables a radiation dose reduction compared conventional images.One hundred forty consecutive patients undergoing 171 spectral detector CTs the head between February and November 2017 (56 ± 19 years age; male/female ratio, 56%/44%) were retrospectively included. The tube current-time product reduced during study period, resulting 61, 55, 55 being examined...
Increased vessel contrast in low-keV virtual monoenergetic images (VMI) spectral detector CT angiography of the head and neck requires adaption window settings. Aim this study was to define generally applicable settings VMI.Two radiologists determined ideal subjective for VMI40-70 keV 54 patients. To obtain settings, center width values were modeled against attenuation internal carotid artery (HUICA). This modeling performed with without respect keV. Subsequently, image quality assessed...
Abstract Background and Purpose The aim of this multicenter study was to compare the clinical outcome, safety, efficacy full‐length radiopaque Aperio Hybrid stent retriever (APH) with precursor thrombectomy device (AP). Methods Multicentric retrospective analysis patients stroke, treated APH AP due an acute ischemic stroke by large vessel occlusions in anterior or posterior circulation, performed. We focused on comparison favorable outcome (modified Rankin Scale, 0‐2) after 3 months,...
Abstract Background Functional magnetic resonance imaging (fMRI) is a useful method for noninvasive presurgical functional mapping. However, the scanner environment inherently unsuitable examination of auditory and language functions, due to loud acoustic noise produced by scanner. Interleaved acquisition methods alleviate this problem providing silent period stimulus presentation and/or response control (sparse sampling) but at expense diminished amount data collected. There are possible...
Procedures in oral and maxillofacial surgery bear a high risk of nerve damage. Three-dimensional imaging techniques can optimize surgical planning help to spare nerves. The aim this study was investigate the diagnostic value 1.5 T magnetic resonance (MRI) scanner with dedicated dental signal amplification coil for assessment nerves cavity as compared cone beam computed tomography (CBCT).Based on 6 predefined criteria, assessability inferior alveolar nasopalatine CBCT MRI 4-channel were 24...
Following brain cancer treatment, the capacity of anatomical MRI to differentiate neoplastic tissue from treatment-related changes such as pseudoprogression is limited. The aim this study was compare apparent diffusion coefficient (ADC) values obtained by diffusion-weighted (DWI) with static parameters O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET for differentiation tumor progression.
In many German trauma centres, it is routine to perform abdominal follow-up sonography (AFS) 6 h after admission for patients with multiple trauma, even if the clinical course uneventful and multi-slice computed tomography (MSCT) reveals no pathology. However, this approach not recommended in Guidelines recent studies have questioned value of AFS these patients. The present study aimed evaluate revised respect omission AFS.We included injuries signs normal MSCT. We collected data 370...
Evaluation der anhand des biplanaren Röntgensystems EOS angefertigten Wirbelsäulenganzaufnahmen zur Beurteilung sagittalen Balance Wirbelsäule bei postmenopausalen Frauen mit und ohne osteoporotische Wirbelkörperfrakturen.
Neueste Studien zeigten eine verbesserte Differenzierung zwischen grauer und weißer Substanz in 65keV-virtuell monoenergetischen Bildern (VMI65keV) verglichen mit der konventionellen Bildrekonstruktion (CI). Die vorliegende Studie untersuchte, ob dies Strahlendosisreduktion ermöglicht.
Abstract BACKGROUND Following brain cancer treatment, the capacity of anatomical MRI to differentiate neoplastic tissue from treatment-related changes (e.g., pseudoprogression) is limited. This study compared apparent diffusion coefficients (ADC) obtained by diffusion-weighted (DWI) with static and dynamic parameters O-(2-[18F]fluoroethyl)-L-tyrosine (FET) PET for differentiation tumor progression. MATERIAL AND METHODS Forty-eight pretreated high-grade glioma patients findings suspicious...