Results 21 to 30 of about 1,067,276 (209)

Algorithms for joint activity–attenuation estimation from positron emission tomography scatter

open access: yesEJNMMI Physics, 2019
Background Attenuation correction in positron emission tomography remains challenging in the absence of measured transmission data. Scattered emission data may contribute missing information, but quantitative scatter-to-attenuation (S2A) reconstruction ...
Yannick Berker   +2 more
doaj   +1 more source

Utilizing x-ray computed tomography for heritage conservation : the case of megalosaurus bucklandii [PDF]

open access: yes, 2017
Of key importance to any cultural institution is the practice of conservation, the method by which specimens at risk of severe degradation or destruction are treated to ensure that they survive into the future.
Attridge, Alex   +6 more
core   +1 more source

The impact of the COVID-19 pandemic on the structure of radiation diagnostics and collective doses of the population of the Russian Federation under medical irradiation in 2020

open access: yesРадиационная гигиена, 2022
Computed tomography has become the main method of early diagnostics of COVID-19 during the pandemic of the novel coronavirus infection. Based on results of computed tomography of the chest it is possible to diagnose viral pneumonia associated with COVIS ...
А. Yu. Popova   +5 more
doaj   +1 more source

Interlaced X-ray diffraction computed tomography [PDF]

open access: yes, 2016
An X-ray diffraction computed tomography data-collection strategy that allows, post experiment, a choice between temporal and spatial resolution is reported.
Beale, AM   +6 more
core   +1 more source

Visualization Ability of Phase-Contrast Synchrotron-Based X-Ray Imaging Using an X-Ray Interferometer in Soft Tissue Tumors

open access: yesTechnology in Cancer Research & Treatment, 2021
Phase-contrast synchrotron-based X-ray imaging using an X-ray interferometer provides high sensitivity and high spatial resolution, and it has the ability to depict the fine morphological structures of biological soft tissues, including tumors.
Thet-Thet Lwin MD, PhD   +3 more
doaj   +1 more source

Knowledge of Risks Associated with the Use of Plain X-Ray, Computed Tomography, and Magnetic Resonance Imaging Among Emergency Physicians and health care working in X-Ray department in Public Sector Tertiary Hospitals at Saudi Arabia 2022 [PDF]

open access: yes, 2022
Background: Plain X-Ray, Computed Tomography, and Magnetic Resonance Imaging is a common procedure performed on a regular basis for diagnostic purposes all over them world.
Adnan Abdulqader Qudair, Olfat Mtouq Gazzaz, Tumadir Mohamad Al Hawsah, Faisal Ali Alharthy, Adel Sadiq AL Sirwani, Hani Abdulrahman Alhazmi, Abdulrahman Mohammed Howsawi, Khaled Hamad Mohammed ALsagoor
core   +1 more source

MicroCT reveals domesticated rice (Oryza sativa) within pottery sherds from early Neolithic sites (4150–3265 cal BP) in Southeast Asia

open access: yesScientific Reports, 2017
Rice (Oryza sativa) was domesticated in the Yangtze Valley region at least 6000–8000 years ago, yet the timing of dispersal of domesticated rice to Southeast Asia is contentious.
Aleese Barron   +10 more
doaj   +1 more source

Applications of X-ray computed tomography in textile field

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2022
Traditional optical imaging technique used as an analysis method for microstructure can only observe surface and can't achieve 3D characterization of the material interior, which greatly limits its application in textile field.
GUO Weina   +3 more
doaj   +1 more source

Multiscale correlative tomography: an investigation of creep cavitation in 316 stainless steel [PDF]

open access: yes, 2017
Creep cavitation in an ex-service nuclear steam header Type 316 stainless steel sample is investigated through a multiscale tomography workflow spanning eight orders of magnitude, combining X-ray computed tomography (CT), plasma focused ion beam (FIB ...
A Delobbe   +31 more
core   +2 more sources

Analyses non destructives par tomographie à rayons X

open access: yesLes Nouvelles de l’Archéologie, 2020
X-ray imaging techniques benefit from developments in physics, mathematics, and computer science, and provide analytical tools to study 3D internal structures of a wide range of objects.
Patricia Wils
doaj   +1 more source

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