Edge illumination is an X-ray phase contrast imaging technique that introduces two absorbing masks with slit-shaped apertures in the setup. During edge acquisition, a pixel-wise intensity profile measured by acquiring projections at several different mask aperture alignments. The difference peak position between acquisitions and without sample yields refraction contrast. However, itself depends on source focal spot position. In many lab sources, of can drift over time, causing corresponding...

Edge illumination is an emerging X-ray phase contrast imaging technique providing attenuation, and dark field contrast. Despite the successful transition from synchrotron to lab sources, cone beam geometry of systems limits effectiveness using conventional planar gratings. The non-parallel incidence X-rays introduces shadowing effects, worsening with increasing angle. To overcome this limitation, several alternative grating designs can be considered. In paper, three compared gratings...

One of the most commonly used correction methods in X-ray imaging is flat field correction, which corrects for systematic inconsistencies, such as differences detector pixel response. In conventional imaging, fields are acquired by exposing without any object beam. However, edge illumination CT, an emerging phase contrast technique, two masks to measure refraction X-rays. These remain place while and thus influence intensity fields. This studied theoretically validated experimentally using...

One of the priorities fourth International Polar Year (IPY) was to increase awareness polar regions and science among general public through education, communication other forms outreach. This paper reports on media coverage Princess Elisabeth Antarctica (PEA), Belgium's ''zero-emission'' Antarctic research station designed by nonprofit Foundation (IPF) run wind solar energy employ state-of-the-art management ''green'' technology. provides background information PEA, a review IPF's strategy...

Continuous X-ray imaging is known to reduce mechanical vibrations and scan time compared a step-and-shoot acquisition approach. However, motion during exposure leads blurred projections consequently loss of spatial resolution contrast in conventionally reconstructed images. Recent works that aim continuous blur focus only on rotational often include linearization approximations, while many applications would benefit from more generalized strategy. In this paper, we propose dedicated...

Due to the growing interest in X-ray phase contrast imaging (XPCI), development of XPCI simulators has become an active field research. Efficient computer simulations are a prime tool for optimizing setup and acquisition process. In addition contrast, modern setups provide insight into unresolvable sample micro structure distribution through dark signal. However, accurately simulate signals, virtual model should contain many fine structures, considerably increasing simulation time. Moreover,...

Conventional X-ray computed tomography (XCT) is a non-destructive imaging technique to visualize and inspect the internal structure of materials in 3D, where are distinguished solely on basis their attenuation coefficient. However, with more specialized phase contrast methods, sensitivity complementary contrasts can be achieved, namely dark field contrast. Edge illumination (EI-XPCI) that especially suited for laboratory application, because it has no strict coherence requirements source....

The properties of fiber reinforced polymers are strongly related to the length and orientation fibers within polymer matrix, latter which can be studied using X-ray computed tomography (XCT). Unfortunately, resolving individual is challenging because they small compared XCT voxel resolution low attenuation contrast between surrounding resin. To alleviate both problems, anisotropic dark field via grating based interferometry (GBI) has been proposed. Here, orientations extracted by applying a...

Edge illumination X-ray phase contrast imaging is a method which relies on two gratings to obtain attenuation, and dark field contrast. Current consist of periodic apertures in high-absorbing flat plate. While edge was originally designed for parallel-beam imaging, it also works with cone-beam sources when the opening angle sufficiently low. With higher angles, however, current cause shadow results decreased intensity. In this paper, three alternative grating geometries are studied...

Determining fiber orientations in a reinforced material with X-ray CT is challenging because the width of individual fibers often much smaller than spatial resolution images. However, anisotropic scattering signal yields information about direction without need to individually resolve them. In this work, edge illumination phase contrast imaging used sample object along different directions. The measured scatter represented on sphere by set spherical harmonics. Next, orientation extracted...