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LEIA instrument undergoing on-ground X-ray calibration at IHEP before being assembled onto the SATech satellite. [1] Lobster Eye Imager for Astronomy (LEIA) (also known as EP-WXT-pathfinder [2]) is a wide-field X-ray imaging space telescope built by Chinese Academy of Sciences (CAS). It was launched on July 27, 2022 onboard of SATech-01 ...
For decades, most astronomers have regarded it as the steadiest beacon at X-ray energies, but data from orbiting observatories show unexpected variations. Since 2008, it has faded by 7 percent, activity likely tied to the environment around its central neutron star.
Bamboo sign; Banana sign; Bat wing appearance; Bear paw sign; Beveled edge sign; Bird of prey sign; Bite sign; Black pleura sign; Blade of grass sign (also known as Flame sign); Blumensaat's line
Fish bone pierced in the upper esophagus. Right image without contrast medium, left image during swallowing with contrast medium. To obtain an image with any type of image detector the part of the patient to be X-rayed is placed between the X-ray source and the image receptor to produce a shadow of the internal structure of that particular part of the body.
X-ray optics is the branch of optics dealing with X-rays, rather than visible light.It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.
The dripping candle wax sign is a radiologic sign seen on X-rays of bone that indicates melorheostosis (or Leri disease), a rare benign bone disease characterized by bone hypertrophy, dysplasia, and sclerosis. [1] Sclerosis typically affects one side of the cortex of the involved bone, appearing similar to wax melting down one side of a candle. [1]
X-ray motion analysis is a technique used to track the movement of objects using X-rays. This is done by placing the subject to be imaged in the center of the X-ray beam and recording the motion using an image intensifier and a high-speed camera , allowing for high quality videos sampled many times per second.
A portable aSi flat-panel detector is used to visualise the movement of liquids in sand cores under high pressure. Flat-panel detectors are a class of solid-state x-ray digital radiography devices similar in principle to the image sensors used in digital photography and video.