A5102835711- Advanced X-ray and CT Imaging
- Radiation Dose and Imaging
- Cardiac Imaging and Diagnostics
- Medical Imaging Techniques and Applications
- Advanced MRI Techniques and Applications
- Radiology practices and education
- Ultrasound in Clinical Applications
- Dental Radiography and Imaging
- Venous Thromboembolism Diagnosis and Management
- Atomic and Subatomic Physics Research
- Cardiovascular Function and Risk Factors
- Cardiac Valve Diseases and Treatments
- Medical and Health Sciences Research
- Welding Techniques and Residual Stresses
- Criminal Law and Policy
- MRI in cancer diagnosis
- Hepatocellular Carcinoma Treatment and Prognosis
- Photoacoustic and Ultrasonic Imaging
- Digital Radiography and Breast Imaging
- Lung Cancer Diagnosis and Treatment
- Sinusitis and nasal conditions
- Glioma Diagnosis and Treatment
- Kidney Stones and Urolithiasis Treatments
- Electrical and Bioimpedance Tomography
- Coronary Interventions and Diagnostics
Goethe University Frankfurt
2010-2020
University Hospital Frankfurt
2010-2020
University of St. Gallen
2016-2019
Praxis für Humangenetik
2017-2019
Kantonsspital St. Gallen
2016-2017
Society of Interventional Radiology
2012-2014
Medical University of South Carolina
2009-2013
Siemens Healthcare (United States)
2013
Catholic University of Applied Sciences
2013
Siemens (Germany)
2012
These guidelines update the previous EANM 2009 on diagnosis of pulmonary embolism (PE). Relevant new aspects are related to (a) quantification PE and other ventilation/perfusion defects; (b) follow-up patients with PE; (c) chronic (d) description additional physiological changes leading diagnoses left ventricular heart failure (HF), obstructive disease (COPD) pneumonia. The should be reported when a mismatch one segment or two subsegments is found. For ventilation, Technegas krypton gas...
Purpose To prospectively compare traditional filtered back projection (FBP) and iterative image reconstruction for the evaluation of heavily calcified arteries with coronary computed tomography (CT) angiography. Materials Methods The study had institutional review board approval was HIPAA compliant. Written informed consent obtained from all patients. Fifty-five consecutive patients (35 men, 20 women; mean age, 58 years ± 12 [standard deviation]) Agatston scores at least 400 underwent CT...
Purpose To evaluate whether a dual-energy (DE) computed tomographic (CT) virtual noncalcium technique can improve the detection rate of acute thoracolumbar vertebral compression fractures in patients with osteoporosis compared that at magnetic resonance (MR) imaging depending on level experience reading radiologist. Materials and Methods This retrospective study was approved by institutional ethics committee. Informed consent obtained from all patients. Forty-nine who were suspected having...
<h3>BACKGROUND AND PURPOSE:</h3> DECT offers additional image datasets with potential benefits, but its use for H&N imaging is not justified unless quality preserved without increased radiation dose. The aim of this work was to compare and dose between a DE-derived WA dataset standard SECT acquisition the H&N. <h3>MATERIALS METHODS:</h3> Thirty-two patients underwent (tube voltages 80 Sn140 kVp) were compared last 32 who (120 on same dual-source scanner. images from 2 DE tubes...
Objectives The aim of this study was to evaluate the effects on objective and subjective image quality virtual monoenergetic reconstructions at various energy levels dual-energy computed tomography (DECT) in patients with head neck cancer. Materials Methods We included 71 (53 men, 18 women; age, 59.3 ± 12.0 years; range, 33–90 years) biopsy-proven untreated primary (n = 55) or recurrent 16) squamous cell carcinoma who underwent DECT. Images were reconstructed a linear blending setting...
Mixing low- and high-voltage acquisitions of dual-energy CT (DECT) scan using different weighting factors leads to differences in attenuation values image quality. The aim this work was evaluate whether average DECT could improve delineation head neck cancer quality.Among 60 consecutive patients who underwent the neck, 35 had positive findings were included study. Images reconstructed as pure 80 kVp, Sn140 weighted-average (WA) datasets from 3 (0.3, 0.6, 0.8) incorporating 30%, 60%, 80% kVp...
To evaluate the feasibility of phantomless in vivo dual-energy computed tomography (CT)-based three-dimensional (3D) bone mineral density (BMD) assessment comparison with dual x-ray absorptiometry (DXA).This retrospective study was approved by institutional review board, and requirement to obtain informed consent waived. Data from clinically indicated CT DXA examinations within 2 months, comprising lumbar spine 40 patients, were included. By using automated dedicated postprocessing software,...
Dual-Energy CT for the Assessment of Chronic Myocardial Infarction in Patients With Coronary Artery Disease: Comparison 3-T MRIRalf W. Bauer1, J. Matthias Kerl1, Nadine Fischer1, Thorsten Burkhard1, Maya C. Larson1, Hanns Ackermann2 and Thomas Vogl1Audio Available | Share
CT in low dose technique is the criterion standard imaging modality for evaluation of paranasal sinus. Our aim was to evaluate dose-reduction potential a recently available sinogram-affirmed iterative reconstruction technique, regarding noise, image quality, and time duration when evaluating this region.CT performed on phantom head at different tube voltages (120 kV, 100 kV) currents (100 mAs, 50 25 mAs). Each protocol reconstructed (in soft tissue bony kernel) by using filtered...
Purpose The aim of this study was to evaluate the diagnostic performance virtual noncalcium (VNCa) dual-energy computed tomography (DECT) reconstructions enabling visualization bone marrow edema for characterization incidental thoracolumbar compression fractures in routine thoracoabdominal staging (CT). Materials and Methods We retrospectively analyzed 51 oncological patients without suspected fracture or indicative complaints presenting at least 1 on DECT who had been examined between...
Noncalcified Atherosclerotic Plaque Burden at Coronary CT Angiography: A Better Predictor of Ischemia Stress Myocardial Perfusion Imaging Than Calcium Score and Stenosis SeverityRalf W. Bauer1 2, Christian Thilo1, Salvatore A. Chiaramida3, Thomas J. Vogl2, Philip Costello1 U. Joseph Schoepf1 3Audio Available | Share
To evaluate the performance of late enhancement dual-energy CT (LE-DECT) for detection infarcted myocardium as compared with 1.5-T magnetic resonance imaging (LE-MRI) in a porcine model reperfused chronic myocardial infarction (MI), using histopathology standard reference.In 8 healthy minipigs, MI was induced by 30-minute balloon occlusion left anterior descending coronary artery. Sixty-one ± 4 days after artery occlusion, LE-DECT performed 5, 10, and 15 minutes subsequent to contrast...
The purpose of the study was to compare performance late iodine-enhancement (LIE) dual-energy computed tomography (DECT) linear blending and selective myocardial iodine mapping for detection chronic infarction (CMI) with gadolinium-enhancement (LGE) 3-T magnetic resonance imaging.This approved by institutional review board, patients gave informed consent. A total 20 a history CMI underwent cardiac LIE-DECT LGE-MRI. Images were reconstructed as 100 kilovolt (peak) (kV[p]), 140 kV(p),...