A5032822996- Medical Imaging Techniques and Applications
- Advanced X-ray and CT Imaging
- Advanced X-ray Imaging Techniques
- Medical Image Segmentation Techniques
- Nuclear Physics and Applications
- Building materials and conservation
- Geology and Paleoclimatology Research
- Fossil Insects in Amber
- Hydrocarbon exploration and reservoir analysis
- Geophysical Methods and Applications
- Geological Modeling and Analysis
- Conservation Techniques and Studies
- Coleoptera Taxonomy and Distribution
- Cultural Heritage Materials Analysis
- Mineral Processing and Grinding
- Spider Taxonomy and Behavior Studies
- Advanced MRI Techniques and Applications
- Radiomics and Machine Learning in Medical Imaging
- Radiation Dose and Imaging
- Geological Studies and Exploration
- Seismic Imaging and Inversion Techniques
- NMR spectroscopy and applications
- Digital Image Processing Techniques
- Image Processing and 3D Reconstruction
- Enhanced Oil Recovery Techniques
Ablynx (Belgium)
2011-2013
Ghent University
2005-2011
Ghent University Hospital
2007-2009
Abstract Three-dimensional (3D) analysis is an essential tool to obtain quantitative results from 3D datasets. Considerable progress has been made in imaging techniques, resulting a growing need for more flexible, complete packages containing advanced algorithms. At the Centre X-ray Tomography of Ghent University (UGCT), research being done on improvement both hardware and software high-resolution computed tomography (CT). UGCT collaborates with groups different disciplines, each having...
When a very-low-absorbing sample is scanned at an x-ray computed tomography setup with microfocus tube and high-resolution detector, the obtained projection images contain not only absorption contrast but also phase contrast. While without signal can be reconstructed very well, such mixed give rise to severe artifacts in slices. A method described that applies correction these projections remove signal. These corrected then processed using standard filtered backprojection algorithm obtain...
The latest generation of high-resolution X-ray computed tomography (HRXCT), with a submicron resolution, enables for the first time three-dimensional (3D) imaging and biometric quantification foraminiferal interiors. Here we exemplify basic possibilities opportunities this new technique by means an analysis on fossil specimen Pseudouvigerina sp. from basal Paleocene Brazos River, Texas. total scan consists 1200 radiographs generated during stepwise rotation (0.3°) specimen. These were...
We apply Very-High-Resolution X-Ray Computed Tomography (VHR-CT) to a minute fossil spider (~1 mm long) from Eocene amber of the Paris Basin, France. demonstrate that newly described genus and species Micropholcommatidae, Cenotextricella simoni, retains excellent details somatic male pedipalpal morphology allows unqualified comparison with extant species. Thus, in addition calibrating tree life, such fossils can now be incorporated into cladistic matrices their resultant phylogenies. This is...
Summary Micro‐CT is a non‐destructive technique for 3D tomographic investigation of an object. A representation the internal structure calculated based on series X‐ray radiographs taken from different angles. The spatial resolution current laboratory‐used micro‐CT systems has come down over last years few tens microns to microns. This opens possibility perform histological investigations in virtual sample, referred as histology. advantage histology immediate and automated visualization...
It was the aim of present study to develop sustained-release matrix tablets by means injection molding ethylcellulose (EC) and polyethylene oxide (PEO) mixtures evaluate influence process temperature, composition, viscosity grade EC PEO on processability drug release.Formulations consisting metoprolol tartrate (MPT, concentration: 30%), plasticized dibutyl sebacate, were extruded consequently molded into tablets. The temperature (120°C 140°C), (4, 10, 20, 45, 100 mPa·s) (7 × 10(6), 1 10(5)...
Loricariidae, or suckermouth armored catfishes, possess upper and lower jaws that are ventrally oriented bear teeth touch the substrate from which algae other food items scraped. The ventral orientation highly specialized morphology of jaws, characterized by protrusible left-right decoupled observed in Pterygoplichthys disjunctivus, species investigated here. Kinematic data scraping feeding movements, obtained external high-speed x-ray recordings, used to quantify jaw movement, especially...
Studying structure and chemistry of wood wood-based materials is the backbone all research many techniques are at hand to do so. A very valuable modality X-ray computed tomography (CT), able non-destructively probe three-dimensional (3D) composition. In this paper, we elaborate on use Nanowood, a flexible multi-resolution CT set-up developed UGCT, Ghent University Centre for Tomography. The technique has been used successfully in different fields science. It illustrated how 3D structural...
Pseudogarypus pangaea Henderickx n. sp., a new fossil pseudoscorpion from Baltic amber, is described. Epoxy embedding and X-ray micro-CT are used to visualize the morphology of single available specimen.
In computed tomography, the application of iterative reconstruction methods in practical situations is impeded by their high computational demands. Especially resolution X-ray where volumes contain a number volume elements (several giga voxels), this burden prevents actual breakthrough. Besides large amount calculations, algorithms require entire to be kept memory during reconstruction, which quickly becomes cumbersome for data sets. To overcome obstacle, we present novel multiresolution...
Abstract X-ray computerized tomography (CT) has traditionally been used as a medical diagnostic tool. This non-destructive technique developed an important research tool for wide variety of scientific subjects. For material ‘medical’ CT, microCT and, very recently, nano- or submicroCT have evaluation techniques engineering and geological purposes. The fact that CT visualizes the internal structure natural building stones yields information on porosity values pore-size distributions is major...