Tomography x ray. Medical search. Frequent questions

The aim of this study was to compare air-trapping as quantified by high-resolution computed tomography (HRCT) of the chest with measures of lung function and airway inflammation in children with mild to moderate asthma. (nih.gov)

efX-SIM is North Star Imaging's newest software technology for industrial Digital Radiography & Computed Tomography X-ray imaging. (ndt.org)
North Star Imaging ranks among the most sophisticated global resource for Turn-Key industrial 2D & 3D Digital Radiography & Computed Tomography (CT) X-ray equipment and Inspection Services. (ndt.org)

Micro computed tomography is X-ray imaging in 3D, by the same method used in hospital CT scans, but on a small scale with massively increased resolution. (accela.eu)
Similar to a hospital CAT scanning system, Micro Computed Tomography (Micro-CT) is a non-destructive 3D imaging technique (4-D with time-based measurements) that uses a highly energetic X-Ray beam to create a series of 2D projections, whose greyscales vary with the volume's internal density and atomic number variations. (surfacesciencewestern.com)

NanoXCT links the activities of 11 partners from 7 European countries including 5 SMEs to design, develop and implement a compact X-ray computed tomography system for non destructive characterization of nano materials and components. (europa.eu)

Jisoo holds a Master of Science from the Korean Advanced Institute of Science &Technology and defended his thesis entitled "Towards time-resolved X-ray scattering tensor tomography" at ETH Zürich. (psi.ch)
X-ray scattering tensor tomography provides 3D directional information on unresolved microstructures in large volumes, facilitating the investigation of the microstructural organization in statistically large enough sample portions. (lu.se)
In this Letter, a rapid x-ray scattering tensor tomography acquisition method is proposed. (lu.se)
The main advantage of the presented method is the reduced data acquisition time compared to the existing protocols for x-ray scattering tensor tomography, paving the way toward rapid time-resolved studies. (lu.se)

For this reason, it has also been mentioned as powder diffraction computed tomography and diffraction scattering computed tomography (DSCT), however they both refer to the same method. (wikipedia.org)

The orientation mismatch between the cone beam of an X-ray tube and the grating lines in a flat substrate remains a big challenge for laboratory grating-based X-ray interferometry, since it severely limits the imaging field of view. (psi.ch)
In her role as translational X-ray imaging adjunct scientist , Marie will mainly work on phase-contrast and dark-field imaging focusing on the further development of these techniques towards their clinical translation. (psi.ch)
Prior to this position, she was a research fellow at the University of Southampton in the UK, where she made advances in X-ray speckle-based imaging using synchrotron and lab sources. (psi.ch)
The project entitled "The Human Auditory System in Motion: Direct Observation of the Microfunction of Sound Transmission using Dynamic Phase-contrast X-ray Imaging" will be done in collaboration with the Inselspital and the ARTORG Center for Biomedical Engineering Research in Bern and is financed by the Swiss National Fund (SNF). (psi.ch)
Prof. Stampanoni heads a group of 19 focused on the development of tools (instruments and algorithms) for tomographic X-ray imaging, both exploiting synchrotron and laboratory sources. (greencarcongress.com)
efX-Sim simulates standard North Star Imaging DR and CT systems which enables X-ray equipment operators to develop techniques and motion programs without having to use a physical X-ray system. (ndt.org)
X-ray CT is a powerful technique that allows non-destructive imaging of batteries. (rigaku.com)
The high-performance ROFEX ( RO ssendorf F ast E lectron beam X -ray tomography)imaging technique has been developed at Helmholtz-Zentrum Dresden-Rossendorf for the noninvasive investigation of dynamic processes. (hzdr.de)
Spine X-ray and computed tomography are widely used medical imaging techniques based on radiology, which enables healthcare providers to obtain clear images of internal organs of patients. (emergenresearch.com)
Rapid development in medical centers in rural and remote regions, as well as launch of CT scanners with higher imaging intelligence that enables healthcare providers to make faster medical decisions, are some other factors expected to increase usage of spine X-rays and computed tomography. (emergenresearch.com)
Three dimensional structures and semi-quantitative mineral distributions were evaluated using X-ray Computed Tomography (XCT) and this was augmented with textural, mineralogical and chemical imaging using Scanning Electron Microscopy (SEM) and optical microscopy as well as fire assay. (sun.ac.za)
The key application areas in tomography are medical X-Ray imaging and industrial 3D X-Ray inspection . (eigenor.com)
As an example, a medical X-Ray imaging appliance using Eigenor's software produces 3D images with only a fraction of the X-Ray dose and 2D images required by traditional solutions. (eigenor.com)
UGCT performs research on laboratory based very high resolution X-ray tomography and its applications, covering the complete imaging chain. (ugent.be)
This continuing education course gives the imaging professional a better understanding of the physical principles of Computed Tomography (CT). (xrayce.com)
The Apex-XCT was designed to address a well-known problem in 3D x-ray imaging approaches in which the required acquisition time exponentially increases with sample diameter. (axt.com.au)
Apex XCT eliminates many of the imaging artefacts that affect operation of conventional 3D X-ray systems, such as beam hardening, streaking/curtaining, photon starvation, and metal artifacts. (axt.com.au)
We develop and use novel methods for X-ray imaging with the highest possible spatial and temporal resolution. (lu.se)
To this end, we use a wide range of X-ray imaging methods at different synchrotrons, including MAX IV in Lund, X-ray free-electron lasers, including European XFEL, as well as lab source systems. (lu.se)
Traditional X-ray imaging is based on absorption contrast, which has poor contrast for small and weakly absorbing samples. (lu.se)
It's capable of X-ray absorption contrast and phase contrast imaging at a spatial resolution of about 1 micrometer in 2D and 3D. (lu.se)
In our group, we exploit and develop AI algorithms to address specific X-ray imaging problems in 2D, 3D, and 4D (3D+time). (lu.se)
The spatial resolution in traditional X-ray imaging is limited by the quality of the optics. (lu.se)
In coherent X-ray imaging, the diffracted signal from the sample is analyzed using advanced algorithms, which makes it possible to improve the spatial resolution. (lu.se)
We develop methods for coherent X-ray imaging, both in transmission and Bragg geometry, and combine this with electrical measurements. (lu.se)
This paper presents application of quantitative X-ray computerized tomography (CT) imaging in investigating the spatial distribution of adsorption kinetics. (cdc.gov)
Radiocontrast agents are a type of medical contrast medium (dye) used to improve the visibility of internal bodily structures in imaging techniques such as computed tomography (CT) or X-ray imaging. (medscape.com)
Objective: To conduct a critical analysis on the use of Cone-Beam Computed Tomography (CBCT) scanner at Bauru School of Dentistry (USP/Brazil) and the indications of this imaging technique. (bvsalud.org)

Ultrafast X-ray tomography shall be qualified as quantitative measurement technique for the analysis of multiphase flows in structured elements up to 100 mm diameter. (hzdr.de)
X-ray micro-tomography (XMT) is increasingly used for the quantitative analysis of the volumes of features within the 3D images. (strath.ac.uk)

There exist several variations of this approach including 3DXRD, X-ray diffraction contrast tomography (DCT) and high energy X-ray diffraction microscopy (HEDM) X-ray diffraction computed tomography, often abbreviated as XRD-CT, typically refers to the technique invented by Harding et al. (wikipedia.org)
The WMI Award is given to young scientists for exceptional contributions to the advancement of X-ray microscopy through either outstanding technical developments or applications, as evidenced by their presentation at the International Conference on X-ray Microscopy and supporting publications. (psi.ch)
The award was presented during the 15th International Conference on X-ray Microscopy XRM2022 hosted by the National Synchrotron Radiation Research Center (NSRRC) in Hsinchu, Taiwan on 19 - 24 June, 2022. (psi.ch)
During this practical on "Absorption and phase contrast X-ray tomographic microscopy", the students had the chance to go, with the help of a jupyter notebook and the guidance of our team members Margaux Schmeltz and Christian Schlepütz, through different examples of tomographic reconstructions. (psi.ch)
Time-resolved X-ray tomographic microscopy provides new opportunities in the volumetric investigation of dynamic processes. (psi.ch)
He also runs the tomographic x-ray microscopy beamline at the Swiss Light Source, the synchrotron facility at the Paul Scherrer Institute (PSI). (greencarcongress.com)
For different length scales two methods are utilized - non-destructive X-ray tomography in the range from mm to μm and combined sequential focused ion beam (FIB) ablation and scanning electron microscopy in the submicron range. (dlr.de)
X-ray microscopy and micro-tomography (μCT) are valuable non-destructive examination methods in many disciplines such as bio-medical research, archaeometry, material science and paleontology. (lu.se)
Here, a CsPbBr3 scintillator comprised of an ordered array of nanowires (NW) in an anodized aluminium oxide (AAO) membrane is presented as a promising new scintillator for X-ray microscopy and μCT. (lu.se)

The major feature of this technique makes possible for us to perform a tomographic measurement by placing two or more cosmic ray detection systems around the object. (iac.es)

The spectrally pure and intense synchrotron x-ray radiation enables the fast acquisition of high-resolution x-ray images that can be computationally assembled into three-dimensional movies. (greencarcongress.com)

This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography , where data is obtained and computed from individual sequential exposures. (lookformedical.com)
A state-of-the-art 25-watt 30-160 kVp nanofocus sealed tube X-ray source combines highest power and spatial resolution with maintenance-free operation. (axt.com.au)

Computed tomography requires radiographic projections from different angles. (hzdr.de)

using a laboratory diffractometer and a monochromatic X-ray pencil beam. (wikipedia.org)
The latter can be performed using also a letterbox, cone and parallel X-ray beam and yields 2D or 3D images corresponding to maps of the crystallites or "grains" present in the sample and their properties, such as stress or strain. (wikipedia.org)
It is illuminated with a monochromatic finely collimated or focused "pencil" X-ray beam. (wikipedia.org)
With local electric field modulation in plasma we can etch high aspect ratio fan-shaped gratings that match the X-ray cone beam emission of a tube source. (psi.ch)
efX-SIM uses a sophisticated X-ray algorithm that simulates how a polychromatic x-ray beam interacts with parts, alloys, and even multiple materials at once. (ndt.org)
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. (lookformedical.com)
Computed tomography modalities which use a cone or pyramid-shaped beam of radiation. (lookformedical.com)

Optical coherence tomography (OCT) allows one to image an internal structure of the investigated sample in a noninvasive and nondestructive way 1 . (nature.com)

it is possible to remove or suppress these artefacts by applying filters during the azimuthal integration of the raw 2D diffraction patterns The data can be corrected for self-absorption artefacts using an X-ray absorption-contrast CT scan of the same sample. (wikipedia.org)
In contrast to many other MHP materials this scintillator shows good stability under continuous X-ray exposure and changing environmental conditions over extended time spans of several weeks. (lu.se)
We have built a phase contrast X-ray tomograph based on a microfocus Cu source. (lu.se)

Research Groups The Centre for X-ray Tomography consists of 3 research groups and develops and applies laboratory-based high-resolution tomography techniques. (ugent.be)
The Centre for X-ray Tomography (UGCT) is a UGent Expertise Centre which performs research on and with the X-ray micro-CT technique. (ugent.be)

The compound is given by intravenous injection to do POSITRON-EMISSION TOMOGRAPHY for the assessment of cerebral and myocardial glucose metabolism in various physiological or pathological states including stroke and myocardial ischemia. (lookformedical.com)
Cerebral computed tomography : a text-atlas / Leon Weisberg, Charles Nice, Myron Katz. (who.int)

X-Ray Tomography Crystal Characterization: Automatic 3D Segmentation. (bvsalud.org)

Chest x-rays, computed tomography, and breathing tests are used to determine how much lung damage has occurred. (msdmanuals.com)
Chest X-ray showed mediastinal lymphadenitis and consolidation on the right lung. (who.int)

X-ray diffraction computed tomography is an experimental technique that combines X-ray diffraction with the computed tomography data acquisition approach. (wikipedia.org)
However, established acquisition protocols such as scanning small angle x-ray scattering and x-ray grating interferometry require long measurement time. (lu.se)
Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology. (lookformedical.com)

The project addresses the limitations of conventional techniques using 3D X-ray computed tomography, which allows for non destructive and fully three dimensional characterizations of specimens. (europa.eu)
Contrary to conventional tomography systems, the ROFEX systems do not achieve this by mechanical rotation of the object or source-detector-compound. (hzdr.de)

abstract = "Enhanced visualization of breast cancer in X-ray computed tomography was achieved by using Bi 2S 3 nanoparticles of 10 nm diameter modified to display a tumor targeting peptide (LyP-1, CGNKRTRGC). (northwestern.edu)

Vancouver, B.C., June 17, 2022 - Global spine X-ray and computed tomography market size reached USD 958.7 Million in 2021 and is expected to register a revenue CAGR of 5.87% during the forecast period, according to a latest analysis by Emergen Research. (emergenresearch.com)
Increasing cases of spinal disorders and spinal injuries requiring accurate diagnosis and quick treatment have increased adoption of spine X-rays and computed tomography devices and is expected to further drive market revenue growth between 2022 and 2030. (emergenresearch.com)

X-ray computed tomography (CT) has emerged as innovative measuring technique for dimensional metrology in industry over the last years. (phddata.org)
Industrial X-ray scanning is often used for R&D, Failure Analysis, Quality Control, Internal Measurements, High-Speed 3D Scanning, 3D Metrology, High Energy Scanning & more. (ndt.org)

Furthermore, a highly sensitive, photon counting wide field of view small pitch X-ray detector concept will be included. (europa.eu)
Investigation of quad-energy high-rate photon counting for X-ray computed tomography using a cadmium telluride detector. (americanelements.com)
To obtain four kinds of tomograms at four different X-ray energy ranges simultaneously, we have constructed a quad-energy (QE) X-ray photon counter with a cadmium telluride (CdTe) detector and four sets of comparators and microcomputers (MCs). (americanelements.com)
X-ray photons are detected using the CdTe detector, and the event pulses produced using amplifiers are sent to four comparators simultaneously to regulate four threshold energies of 20, 33, 50 and 65keV. (americanelements.com)
Besides being implemented at synchrotrons radiation sources, laboratory setups using an X-ray tube and high-resolution scintillation detector routinely provide information on the micrometre scale. (lu.se)
The system is based on a microfocus X-ray source with a Cu target, a high-resolution detector and a high-precision sample stage. (lu.se)

M. Bieberle, T. Stürzel, U. Hampel, E. Laurien, Ultrafast 3D X-ray tomography of a wire-mesh sensor in operation in a two-phase flow , 7th World Congress on Industrial Process Tomography, WCIPT7, 02. (hzdr.de)
Ultrafast X-ray computed tomography has been primarily developed for the non-invasive measurement of the phase distribution within two-phase flows in vertical pipes. (hzdr.de)

Spine X-ray and computed tomography are widely used for diagnosis of spinal tumors, fractures, or infections, due to their properties of generating images of internal organs that are generally inaccessible. (emergenresearch.com)
Asia Pacific is expected to register a rapid revenue growth rate in the spine X-ray and computed tomography market over the forecast period due to increasing adoption of radiology devices in the diagnosis of patients in the region. (emergenresearch.com)

A framework to generate simulated X-ray computed tomography (XCT) data of ground truth (denoted here as "GT") flaws was developed for the evaluation of flaw detection algorithms using image comparison metrics. (asme.org)
Eigenor Tomography is a software-only solution that uses advanced algorithms. (eigenor.com)
Tomography using radioactive emissions from injected RADIONUCLIDES and computer ALGORITHMS to reconstruct an image. (lookformedical.com)

In order to facilitate X-ray computed tomography at the nanometer scale, NanoXCT comprises a novel concept of an ultra-bright X-ray source in combination with a high precision focusing and emission system. (europa.eu)
The aim of this study was to assess the use of a commercial nano-focused x-ray tomography system to non-invasively investigate the three-dimensional structure of various solid pharmaceutical products. (strath.ac.uk)
The experimental facility has been installed in the ultra-fast X-ray tomography system (top left). (hzdr.de)
Sigray's Apex-XCT™ is a revolutionary 3D X-ray computed tomography (XCT) system optimised for flat samples. (axt.com.au)
Sigray's Apex-XCT™ is a revolutionary 3D x-ray computed tomography (XCT) system optimised for flat samples, such as for failure analysis of advanced packages, printed circuit boards (PCBs), cell phones, pouch cell batteries, and wafers. (axt.com.au)
Flexible and versatile CT system that can be fully configured with a large choice of X-ray sources and detectors. (rx-solutions.com)
Computed Tomography X-Ray System, Model uCT 760, Rx, CE, GTIN: 06971576831043 - Product Usage: ntended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data taken at different angles and planes and indicated for the whole body (including head, neck, vascular). (fda.gov)

In order to determine axial velocities of structures within the object of investigation the ROFEX systems comprise a second tomography plane, which is driven intermittently to the first one, if required. (hzdr.de)
As a user facility, UGCT offers external researchgroups and companies access to its unique combination of state-of-the-art in-house developed high-resolution X-ray CT systems and its CT expertise. (ugent.be)

A penalized maximum-likelihood estimation is proposed to perform hyperspectral (spatio-spectral) image reconstruction for X-ray fluorescence tomography. (anl.gov)
D. Gursoy, T. Bicer, A. Lanzirotti, M. G. Newville and F. De Carlo, " Hyperspectral image reconstruction for x-ray fluorescence tomography," Optics Express , vol. 23 (2015). (anl.gov)

Tomography using x-ray transmission. (ctsicn.org)
Tomography using x-ray transmission and a computer algorithm to reconstruct the image. (lookformedical.com)
It is performed with an electron microscope fitted with an x-ray spectrometer, in scanning or transmission mode. (lookformedical.com)

SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography , but uses isotopes with longer half-lives and resolution is lower. (lookformedical.com)
A method of computed tomography that uses radionuclides which emit a single photon of a given energy. (lookformedical.com)

Thorax computerized tomography revealed multiple lymph nodes located in the right paratracheal region, and consolidation on the middle lobe of the right lung. (who.int)

UGCT also acts as a user facility that offers the use of X-ray CT to researchers of many scientific domains in theirresearch. (ugent.be)

Our results indicate that infants with CF have thickened airway walls, narrowed airway lumens, and air trapping, when assessed by high-resolution computed tomography, and measurements of airway structure correlated with airway function. (nih.gov)

With X-ray micro-tomography, it is possible to overcome these limitations and carry out time lapse studies of the evolution of the microstructure of ice cream. (uzh.ch)

Did you know X-ray computed tomography (CT) can reveal structural deformities and defects and inspect for proper alignment of electrodes, separators, and electrolytes non-destructively? (rigaku.com)

Jisoo was awarded for his development of the method "Time-resolved x-ray scattering tomography for rheological studies", and is co-recipient of the award with Yanqi Luo from the Advanced Photons Source for her work on applications. (psi.ch)
In this talk, we introduce a novel method based on cosmic-ray muons to create a direct snapshot of the density profile within a volcano (and/or other geological features). (iac.es)
This study proposes a new method for 3D images of crystals obtained with micro X-ray computed tomography . (bvsalud.org)

Hard X-ray fluorescence ( XRF ) tomography has grown into a powerful non-destructive technique for probing trace metal distributions in samples without the need for physical sectioning that may disrupt trace element distributions and sample structure. (anl.gov)

The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image. (lookformedical.com)

X-ray assay of the right arm showed an osteolytic lesion in the distal end of the right ulna, with soft tissue heterogeneity extending to the skin surrounding the bone ( Figure 1 ). (who.int)

Researchers from ETH Zurich and the Paul Scherrer Institute have visualized and quantified the origins and evolution of this electrochemical and mechanical degradation of Li-ion batteries during battery operation using high-resolution 3D movies recorded using using x-ray tomography at the Swiss Light Source. (greencarcongress.com)
Study on a simulation-based scatter correction for high-resolution gamma-ray tomography , 7th World Congress on Industrial Process Tomography, WCIPT7, 02. (hzdr.de)
It shows a high light yield under X-ray exposure which improves with smaller NW diameter and higher NW length. (lu.se)
This makes it suitable for tomography, which is demonstrated by acquiring the first high-resolution tomogram using a MHP scintillator with the presented laboratory setup. (lu.se)
Determine whether asymptomatic infants with CF have evidence for changes in airway structure when assessed by high-resolution computed tomography, and whether airway structure correlates with airway function in this age group. (nih.gov)
The x-ray microscopes by Glenbrook Technologies, provide users with the ability to examine, in real time, the internal details of small, complex objects at high magnification. (accela.eu)

Furthermore, parameters characterizing the analyzed process, such as interfacial area of a turbulent gas-liquid flow, can be extracted from the gained data from both tomography planes. (hzdr.de)

Results of search for 'su:{Tomography, X-ray computed. (who.int)

In this webinar, we will discuss important factors to consider when using X-ray CT methods to inspect batteries. (rigaku.com)

Apex XCT, by comparison, absorbs a much wider portion of the X-ray spectrum offering massive throughput improvements. (axt.com.au)

X-ray diffraction computed tomography can be divided into two main categories depending on how the XRD data are being treated, specifically the XRD data can be treated either as powder diffraction or single crystal diffraction data and this depends on the sample properties. (wikipedia.org)
The reconstructed data can also be seen as a stack of 2D square images, where each image corresponds to an X-ray scattering angle. (wikipedia.org)
Join mathematician Samuli Siltanen and test your own tomographer skills as you guess the image only by looking at X-ray data. (momath.org)

Computed tomography (CT) is used excessively for scanning dental infections even though history and. (dentistrytoday.com)

Anatomy40

Organisms4

Diseases35

Chemicals and Drugs30

Analytical, Diagnostic and Therapeutic Techniques and Equipment99

Psychiatry and Psychology2

Phenomena and Processes32

Disciplines and Occupations5

Technology, Industry, Agriculture4

Information Science11

Named Groups2

Health Care41

Geographicals3

Quantified by high-resolution computed tomography1

Radiography2

Micro computed tomography2

Computed tomography system1

Tensor tomography4

Scattering computed1

Imaging28

Quantitative2

Microscopy9

Tomographic1

Synchrotron x-ray1

Spatial2

Radiographic1

Beam7

Coherence1

Contrast3

Centre2

Cerebral2

Characterization1

Chest2

Acquisition3

Conventional2

Abstract1

20222

Metrology2

Detector6

Ultrafast2

Diagnosis2

Algorithms3

System7

Systems2

Image reconstruction2

Transmission3

Photon2

Lung1

Facility1

Measurements1

Limitations1

Reveal1

Method3

Technique1

Photons1

Bone1

High6

Planes1

Search1

Methods1

Throughput1

Data3

Dental1