A5033307627- Advanced MRI Techniques and Applications
- Cardiac Imaging and Diagnostics
- Venous Thromboembolism Diagnosis and Management
- Advanced X-ray and CT Imaging
- Central Venous Catheters and Hemodialysis
- Radiation Dose and Imaging
- MRI in cancer diagnosis
- Medical Imaging Techniques and Applications
- Pediatric Urology and Nephrology Studies
- Vascular Procedures and Complications
- Peripheral Artery Disease Management
- Gallbladder and Bile Duct Disorders
- Renal and Vascular Pathologies
- Atomic and Subatomic Physics Research
- Hepatitis C virus research
- Coronary Interventions and Diagnostics
- Liver Disease Diagnosis and Treatment
- Cerebrovascular and Carotid Artery Diseases
- Hepatocellular Carcinoma Treatment and Prognosis
- Pediatric Hepatobiliary Diseases and Treatments
- Radiomics and Machine Learning in Medical Imaging
- Cardiac Arrhythmias and Treatments
- Urological Disorders and Treatments
- Lung Cancer Diagnosis and Treatment
- Cardiovascular Function and Risk Factors
University Hospital Schleswig-Holstein
2010-2024
University of Lübeck
2010-2024
Universitäts Hautklinik Kiel
2017-2024
Charité - Universitätsmedizin Berlin
2008-2022
Humboldt-Universität zu Berlin
2013-2022
Freie Universität Berlin
2022
RWTH Aachen University
2005-2021
MSB Medical School Berlin
2020
Goethe University Frankfurt
2019
St. Josefs Hospital
2019
No AccessJournal of UrologyOriginal Article1 Feb 2017Percutaneous Stone Manipulation P. Alken, G. Hutschenreiter, R. Günther, and M. Marberger AlkenP. Alken , HutschenreiterG. Hutschenreiter GüntherR. Günther MarbergerM. View All Author Informationhttps://doi.org/10.1016/j.juro.2016.10.070AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Percutaneous stone manipulation by direct ultrasound disintegration, extraction...
To evaluate a newly developed algorithm for metal artifact reduction (MAR) in Computed Tomography (CT).A projection interpolation MAR with threshold-based segmentation was developed. First, the tested simulated hip phantom. On demand, presence of metallic inserts simulated, representing total endoprostheses. Second, CT data 20 patient endoprosthesis were reconstructed and without application algorithm. Image quality independently assessed by 2 experienced radiologists using qualitative...
Reduction of Contrast Material Dose and Artifacts by a Saline Flush Using Double Power Injector in Helical CT the ThoraxPatrick Haage1, Thomas Schmitz-Rode, Dolores Hübner, Werner Piroth Rolf W. GüntherAudio Available | Share
The advent of fibrin-binding molecular magnetic resonance (MR) contrast agents and advances in coronary MRI techniques offers the potential for direct imaging thrombosis. We tested feasibility this approach using a gadolinium (Gd)-based agent, EP-2104R (EPIX Medical Inc), swine model thrombus in-stent thrombosis.Ex vivo sensitivity MR was by use intracoronarily delivered Gd-DTPA-labeled fibrinogen thrombi (n=6). After successful demonstration, thrombosis induced x-ray-guided placement...
The purpose of this study was to compare multidetector CT (MDCT) the thoracic and lumbar segments spine with MR imaging conventional radiography for bone lesion detection evaluating risk vertebral fracture in multiple myeloma.Eighteen patients myeloma stage III (according criteria Durie Salmon) underwent MDCT, radiography, spine. MDCT performed using a standard protocol no contrast material. Source images were reconstructed an effective slice thickness 3 mm overlapping reconstruction...
To determine the value of diagnostic imaging in management mesenteric infarction.Within 8 years, 54 patients with infarction underwent before surgery, including plain radiography (n = 45), ultrasound (US) 29), small bowel follow-through examination 7), colon enema study angiography 16), and computed tomography (CT) 22). Clinical course, laboratory values, findings were considered diagnosis.Radiography US allowed correct diagnoses five 18 cases (28%). Only one 14 fluoroscopic examinations...
To demonstrate follow-up results of stent placement in aortic and iliac stenoses.A total 109 patients with 118 aortoiliac stenoses underwent self-expanding stents. Mean length the stenotic segments was 3 cm +/- 2 (standard deviation). ankle-arm index at rest 0.58 0.2. A 101 were followed up angiographically or clinically.A mean 1.2 stents 0.5 inserted per case. Clinical stage improved 112 cases; it two more stages 89 cases. to 0.92 0.17. Total major complication rates 6.8% 3.4%,...
Magnetic resonance (MR)--guided coronary artery stent placement is a challenging vascular intervention because of the small size arteries combined with incessant motion during respiratory and cardiac cycles. These obstacles necessitate higher temporal spatial resolution real-time MR imaging techniques when compared interventional peripheral angiography.A new, ultrafast, technique that combines steady-state free precession (SSFP) for high signal-to-noise ratio radial k-space sampling (rSSFP)...
Background— The differential diagnosis of acute chest pain is challenging, especially in patients with normal ECG findings, and may include coronary thrombosis or pulmonary emboli. aim this study was to investigate the novel fibrin-specific contrast agent EP-2104R for molecular targeted MR imaging Methods Results— Fresh clots were engineered ex vivo from human blood delivered lungs arteries 7 swine. Subsequent performed a navigator-gated free-breathing cardiac-triggered 3D inversion-recovery...
PURPOSE: To evaluate the clinical utility and morphologic accuracy of gadolinium-enhanced excretory magnetic resonance (MR) urography after low-dose diuretic injection to correlate results with those conventional urography. MATERIALS AND METHODS: In 71 patients urologic symptoms, MR was performed intravenous 5-10 mg furosemide and, 30-60 seconds later, 0.1 mmol gadopentetate dimeglumine per kilogram body weight. The urograms were interpreted by three radiologists, who blinded outcome,...
The aim of this study was to evaluate the influence different weighting factors on contrast enhancement, signal-to-noise ratio (SNR), and image quality in fusion dual energy computed tomography (DECT) angiography.Fifteen patients underwent a CT angiography aorta with SOMATOM Definition Dual Source (DSCT; Siemens, Forchheim, Germany) mode (tube voltage: 80 140 kVp; tube current: 297 eff. mA 70 mA; collimation, 14 x 1.2 mm). Raw data were reconstructed using soft convolution kernel (D30f)....
The detection and differentiation of intracardiac masses is still challenging may include neoplasms thrombi. aim this study was the investigation a targeted, fibrin-specific contrast agent (EP-2104R) for molecular targeted magnetic resonance imaging (MRI) left atrial clots.Chronic human thrombi were surgically implanted in appendage 5 swine. Molecular MRI performed with navigator-gated, free-breathing, cardiac-triggered 3D inversion-recovery, black-blood, gradient-echo sequence before after...
To prospectively compare the effects of two computer-aided detection (CAD) systems on small pulmonary nodules at multi-detector row computed tomography (CT) by using a consensus panel decision as reference standard.Institutional review board approval and informed consent were obtained. Multi-detector CT scans randomly chosen evaluated in 25 patients. Two dedicated CAD systems-ImageChecker (R2 Technologies, Sunnyvale, Calif) Nodule Enhanced Viewing (NEV) (Siemens Medical Solutions, Forchheim,...
Rationale and Objective The aim of this study was to systematically compare the ability assess coronary artery lumen in presence stents multislice spiral CT (MSCT). Methods Ten different were examined with 4- 16-detector row MSCT scanners. For image reconstruction, a standard dedicated convolution kernel for stent visualization used. Images analyzed regarding visibility, intraluminal attenuation, artifacts outside lumen. Results compared using repeated-measure analysis variance. Depending on...