A5102871394- Medical Imaging Techniques and Applications
- Advanced MRI Techniques and Applications
- Seismic Imaging and Inversion Techniques
- Medical Image Segmentation Techniques
- Nuclear Engineering Thermal-Hydraulics
- Nuclear reactor physics and engineering
- Numerical methods for differential equations
- Electron Spin Resonance Studies
- Advanced NMR Techniques and Applications
- Advanced Electron Microscopy Techniques and Applications
- Ultrasound Imaging and Elastography
- Pulsed Power Technology Applications
- Mesoporous Materials and Catalysis
- Atomic and Subatomic Physics Research
- Optical Polarization and Ellipsometry
- Robotics and Sensor-Based Localization
- Cardiovascular Health and Disease Prevention
- Inertial Sensor and Navigation
- Optical Imaging and Spectroscopy Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced X-ray Imaging Techniques
- Cardiac Imaging and Diagnostics
- Advanced Neuroimaging Techniques and Applications
- Medical Imaging and Analysis
- Satellite Image Processing and Photogrammetry
Graz University of Technology
2018-2020
BioTechMed-Graz
2018
Purpose Magnetic resonance imaging protocols for the assessment of quantitative information suffer from long acquisition times since multiple measurements in a parametric dimension are required. To facilitate clinical applicability, accelerating is high importance. this end, we propose model‐based optimization framework conjunction with undersampling 3D radial stack‐of‐stars data. Theory and Methods High resolution T 1 maps generated subsampled data by employing reconstruction combined...
Purpose Highly accelerated B ‐mapping based on the Bloch–Siegert shift to allow 3D acquisitions even within a brief period of single breath‐hold. Theory and Methods The dependent phase is measured highly subsampled 3D‐volume reconstructed using two‐step variational approach, exploiting different spatial distribution morphology ‐field. By appropriate variable substitution basic non‐convex optimization problem transformed in sequential solution two convex problems with total generalized...
Abstract Objectives This feasibility study aimed to investigate the reliability of multi-factorial age estimation based on MR data hand, wisdom teeth and clavicles with reduced acquisition time. Methods The raw 34 volunteers—acquired a 3T system using times ( T A ) 3:46 min (hand), 5:29 (clavicles) 10:46 (teeth)—were retrospectively undersampled applying commercially available CAIPIRINHA technique. Automatic radiological methods were applied original image as well estimates decreasing...
Purpose To model and correct the dephasing effects in gradient‐echo signal for arbitrary RF excitation pulses with large flip angles presence of macroscopic field variations. Methods The spoiled 2D was modeled using a numerical solution Bloch equations to calculate magnitude phase transverse magnetization across slice profile. Additionally, regional variations transmit profile scaling due gradients were included. Simulations, phantom, vivo measurements at 3 T conducted myelin water fraction...
To reduce the misbalance between compensation gradients and macroscopic field gradients, we introduce an adaptive slice-specific z-shimming approach for 2D spoiled multi-echo gradient-echoe sequences in combination with modeling of signal decay.Macroscopic were estimated each slice from a fast prescan (15 seconds) then used to calculate moments along echo train. The coverage compensated was increased by applying three positive negative moments. With forward model, which considered effect...