A5089276906- Advanced X-ray Imaging Techniques
- Advanced X-ray and CT Imaging
- Advanced MRI Techniques and Applications
- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Digital Holography and Microscopy
- Advanced Neuroimaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Optical measurement and interference techniques
- Geological and Geochemical Analysis
- Medical Imaging Techniques and Applications
- Astrophysical Phenomena and Observations
- Catalytic Processes in Materials Science
- Advanced Chemical Physics Studies
- Seismic Imaging and Inversion Techniques
- nanoparticles nucleation surface interactions
- Fetal and Pediatric Neurological Disorders
University of Trieste
2020-2024
Elettra-Sincrotrone Trieste S.C.p.A.
2022-2024
Abstract We present an application of X-ray scattering tensor tomography with a random wavefront modulator to resolve the orientation microstructures in archaeological skeletal remains. experimentally investigated two fragments from different tissue types — cortical bone and root dentine commonly analyzed palaeoanthropological research. This study hints at potential advance methodologies for both research clinical applications.
Wavefront-marking X-ray imaging techniques use e.g., sandpaper or a grating to generate intensity fluctuations, and analyze their distortion by the sample in order retrieve attenuation, phase-contrast, dark-field information. Phase contrast yields an improved visibility of soft-tissue specimens, while reveals small-angle scatter from sub-resolution structures. Both have found many biomedical engineering applications. The previously developed Unified Modulated Pattern Analysis (UMPA) model...
Abstract Speckle-based imaging (SBI) is an advanced X-ray technique that measures phase and dark-field signals, in addition to absorption signals. SBI uses random wavefront modulators generate speckles requires two images: one with a speckle pattern alone, both the sample speckles. reconstruction algorithms retrieve three signals (transmission, refraction, dark-field) by comparing images. In SBI, visibility plays crucial role retrieval of When translating from synchrotron sources compact...
We present a versatile method for full-field x-ray scattering tensor tomography that is based on energy conservation and applicable to data obtained using different wavefront modulators. Using this algorithm, we pave the way speckle-based tomography. The proposed model relies mathematical approach allows tuning spatial resolution signal sensitivity. application of algorithm three imaging modalities demonstrate its potential applications directional dark-field imaging. Published by American...
We demonstrate a robust signal extraction method for x-ray speckle-based tensor tomography. validate the effectiveness of several carbon fiber composites, highlighting its potential industrial applications. The proposed can be adapted to various acquisition schemes and wavefront-marking optical elements, making it versatile tool scattering
Abstract Speckle-based imaging (SBI) is a multi-modal X-ray technique that gives access to absorption, phase-contrast, and dark-field signals from single dataset. However, it often difficult disentangle the different measurement. Having complementary data obtained by repeating scan under slightly varied conditions (multiframe approach) can significantly enhance accuracy of signal extraction and, consequently, improve overall quality final reconstruction. In order retrieve channels, SBI...
The vibrational features of carbon monoxide (CO) adsorbed on Ir(111) were studied by means high-resolution core-level spectroscopy. By monitoring the Ir 4f7/2 core level as a function exposure, we proved that CO adsorbs surface always in on-top sites, agreement with results spectroscopy techniques and density functional theory studies. C 1s splittings measured for p(√3 × √3)R30° (233.4 ± 0.5 meV) c(4 2√3)rect (231.4 0.4 structures good Z + 1 model. Despite very small error bar measurements,...
We present a versatile method for full-field, X-ray scattering tensor tomography that is based on energy conservation and applicable to data obtained using different wavefront modulators. Using this algorithm, we pave the way speckle-based tomography. The proposed model relies mathematical approach allows tuning spatial resolution signal sensitivity. application of algorithm three imaging modalities demonstrate its potential applications directional dark-field imaging.
We demonstrate a robust signal extraction method for X-ray speckle-based tensor tomography. validate the effectiveness of several carbon fiber composites, highlighting its potential industrial applications. The proposed can be adapted to various acquisition schemes and wavefront-marking optical elements, making it versatile tool scattering
X-ray computed micro-tomography (μCT) is one of the most advanced and common non-destructive techniques in field medical imaging material science. It allows recreating virtual models (3D models), without destroying original objects, by measuring three-dimensional attenuation coefficient maps samples on (sub) micrometer scale. The quality images obtained using μCT strongly dependent performance associated detector i.e. to acquisition information beam traversing patient/sample being precise...
Wavefront-marking X-ray imaging techniques use e.g., sandpaper or a grating to generate intensity fluctuations, and analyze their distortion by the sample in order retrieve attenuation, phase-contrast, dark-field information. Phase contrast yields an improved visibility of soft-tissue specimens, while reveals small-angle scatter from sub-resolution structures. Both have found many biomedical engineering applications. The previously developed Unified Modulated Pattern Analysis (UMPA) model...