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#xrays

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#AI Identifies #FattyLiverDisease Using Chest #XRays

> Researchers trained the #deepLearning algorithm on 6,599 chest X-ray images from 4,414 patients, using controlled attenuation parameter scores as ground truth measures of #liver fat.

> This groundbreaking research opens up new avenues for early detection of this increasingly prevalent condition, which statistics suggest affects nearly one in four people globally.

bioengineer.org/ai-identifies-

bioengineer.org · AI Identifies Fatty Liver Disease Using Chest X-RaysBy Bioengineer

X-RAYS AND ENERGY

X-rays have much higher energy and much shorter wavelengths than ultraviolet light, and scientists usually refer to x-rays in terms of their energy rather than their wavelength. This is partially because x-rays have very small wavelengths, between 0.03 and 3 nanometers, so small that some x-rays are no bigger than a single atom of many elements.a series of 12 x-ray images showing the various level of activity on the Sun.

Our Sun's radiation peaks in the visual range, but the Sun's corona is much hotter and radiates mostly x-rays. To study the corona, scientists use data collected by x-ray detectors on satellites in orbit around the Earth. Japan's Hinode spacecraft produced these x-ray images of the Sun that allow scientists to see and record the energy flows within the corona.

TEMPERATURE AND COMPOSITION

The physical temperature of an object determines the wavelength of the radiation it emits. The hotter the object, the shorter the wavelength of peak emission. X-rays come from objects that are millions of degrees Celsius—such as pulsars, galactic supernovae remnants, and the accretion disk of black holes.

From space, x-ray telescopes collect photons from a given region of the sky. The photons are directed onto the detector where they are absorbed, and the energy, time, and direction of individual photons are recorded. Such measurements can provide clues about the composition, temperature, and density of distant celestial environments. Due to the high energy and penetrating nature of x-rays, x-rays would not be reflected if they hit the mirror head on (much the same way that bullets slam into a wall). X-ray telescopes focus x-rays onto a detector using grazing incidence mirrors (just as bullets ricochet when they hit a wall at a grazing angle).

NASA's Mars Exploration Rover, Spirit, used x-rays to detect the spectral signatures of zinc and nickel in Martian rocks. >>science.nasa.gov/ems/11_xrays/
ui.adsabs.harvard.edu/abs/2025

Continued thread

Und hier: die vier – Brillante Blitze in den Tunneln! Die Roten Lampen hier sind die Elektronen, die drei blauen Bahnen da außen ist das Röntgenlicht. Das wird jetzt zu den Experimenten gebracht, und dann macht es dort pjuu–pjuu und die Röntgenmenschys alle so: yeah!

Und dann purzeln aus den Detektoren ganz viele Datteln raus und verstopfen die festen Platten.

4/N

So, jetzt 1 kurze Trötpause 🛌, bis morgen!

#UM25#XFEL#XRays