Results 41 to 50 of about 4,518,330 (260)

Internet hand x-rays: A comparison of joint space narrowing and erosion scores (Sharp/Genant) of plain versus digitized x-rays in rheumatoid arthritis patients

BMC Musculoskeletal Disorders, 2002
Background The objective of the study is to examine the reliability of erosion and joint space narrowing scores derived from hand x-rays posted on the Internet compared to scores derived from original plain x-rays.
Watson Margaret M, Cabarrus Luis P, Montgomery Gregory P, Arbillaga Hector O, Martin Liam, Edworthy Steven M   +5 more
doaj   +1 more source

'A new kind of rays': gothic fears, cultural anxieties and the discovery of X-rays in the 1890s [PDF]

, 2015
In 1895, the world of modern physics was effectively ushered in with the discovery of X-rays by the German physicist, Wilhelm Conrad Röntgen. X-rays rapidly changed the ways in which the human body was perceived, and their discovery was documented and ...
Avery, S.
core   +1 more source

Recasting the nature of INTEGRAL hard X-ray transients previously classified as active galactic nuclei

Astronomy & Astrophysics
We present new broad-band X-ray results aimed at the identification and characterization of four poorly studied hard X-ray transients discovered by INTEGRAL: IGR J16426+6536, IGR J09446−2636, IGR J21268+6203, and IGR J02447+7046. The key properties and X-
Sguera V., Sidoli L.
doaj   +1 more source

Efficient pneumonia detection using Vision Transformers on chest X-rays

Scientific Reports
Pneumonia is a widespread and acute respiratory infection that impacts people of all ages. Early detection and treatment of pneumonia are essential for avoiding complications and enhancing clinical results.
Sukhendra Singh, Manoj Kumar, Abhay Kumar, Birendra Kumar Verma, Kumar Abhishek, Shitharth Selvarajan   +5 more
semanticscholar   +1 more source

Stellar flare detection in XMM-Newton with gradient-boosted trees

Astronomy & Astrophysics
Context. The EXTraS project, based on data collected with the XMM-Newton observatory, provides us with a vast amount of light curves for X-ray sources. For each light curve, EXTraS also provides us with a set of features.
Pasquato Mario, Marelli Martino, De Luca Andrea, Salvaterra Ruben, Carenini Gaia, Belfiore Andrea, Tiengo Andrea, Esposito Paolo   +7 more
doaj   +1 more source

Single shot diffraction of picosecond 8.7-keV x-ray pulses

Physical Review Special Topics. Accelerators and Beams, 2012
We demonstrate multiphoton, single shot diffraction images of x rays produced by inverse Compton scattering a high-power CO_{2} laser from a relativistic electron beam, creating a pulse of 8.7 keV x rays.
F. H. O’Shea, O. Williams, G. Andonian, S. Barber, Y. Sakai, J. B. Rosenzweig, I. Pogorelsky, M. Fedurin, K. Kusche, V. Yakimenko   +9 more
doaj   +1 more source

X-ray Observations at Gaisberg Tower

Atmosphere, 2018
We report the occurrence of X-rays at ground level due to cloud-to-ground flashes of upward-initiated lightning from Gaisberg Tower, in Austria, which is located at an altitude of 1300 m.
Pasan Hettiarachchi, Vernon Cooray, Gerhard Diendorfer, Hannes Pichler, Joseph Dwyer, Mahbubur Rahman   +5 more
doaj   +1 more source

Pulmonary abnormality screening on chest x-rays from different machine specifications: a generalized AI-based image manipulation pipeline

European Radiology Experimental, 2023
Background Chest x-ray is commonly used for pulmonary abnormality screening. However, since the image characteristics of x-rays highly depend on the machine specifications, an artificial intelligence (AI) model developed for specific equipment usually ...
Heejun Shin, Taehee Kim, Juhyung Park, Hruthvik Raj, Muhammad Shahid Jabbar, Zeleke Desalegn Abebaw, Jongho Lee, Cong Cung Van, Hyungjin Kim, Dongmyung Shin   +9 more
doaj   +1 more source

Efficient concentration of high-energy x-rays for diffraction-limited imaging resolution

, 2017
Newly available x-ray nanobeams in synchrotron radiation facilities open new research avenues in the nanosciences. However, a significant challenge is to efficiently concentrate, particularly for high-energy x-rays, a large photon flux into a very small ...
J. Silva, A. Pacureanu, Yang Yang, S. Bohic, C. Morawe, R. Barrett, P. Cloetens   +6 more
semanticscholar   +1 more source

X-ray-Induced Heating in the Vicinity of the X-ray Interaction Point

Applied Sciences, 2023
When X-rays pass through a material, radiation damage occurs, and heat is generated at the X-ray interaction point, which can then be transferred around the X-ray irradiation site. This X-ray-induced heat transfer can affect the temperature of the sample
Jangwoo Kim, Ki Hyun Nam
doaj   +1 more source