X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.
Tomography using x-ray transmission.
Devices for accelerating protons or electrons in closed orbits where the accelerating voltage and magnetic field strength varies (the accelerating voltage is held constant for electrons) in order to keep the orbit radius constant.
A fabricated tooth substituting for a natural tooth in a prosthesis. It is usually made of porcelain or plastic.
Loss of the tooth substance by chemical or mechanical processes
Occlusal wear of the surfaces of restorations and surface wear of dentures.
Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Penetrating, high-energy electromagnetic radiation emitted from atomic nuclei during NUCLEAR DECAY. The range of wavelengths of emitted radiation is between 0.1 - 100 pm which overlaps the shorter, more energetic hard X-RAYS wavelengths. The distinction between gamma rays and X-rays is based on their radiation source.
Examination of any part of the body for diagnostic purposes by means of X-RAYS or GAMMA RAYS, recording the image on a sensitized surface (such as photographic film).
Identification and measurement of ELEMENTS and their location based on the fact that X-RAYS emitted by an element excited by an electron beam have a wavelength characteristic of that element and an intensity related to its concentration. It is performed with an electron microscope fitted with an x-ray spectrometer, in scanning or transmission mode.
A subclass of cartilaginous fish comprising the SHARKS; rays; skates (SKATES (FISH);), and sawfish. Elasmobranchs are typically predaceous, relying more on smell (the olfactory capsules are relatively large) than sight (the eyes are relatively small) for obtaining their food.
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
The common name for all members of the Rajidae family. Skates and rays are members of the same order (Rajiformes). Skates have weak electric organs.
Neutrons, the energy of which exceeds some arbitrary level, usually around one million electron volts.
Stainless steel. A steel containing Ni, Cr, or both. It does not tarnish on exposure and is used in corrosive environments. (Grant & Hack's Chemical Dictionary, 5th ed)
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
A psychological test consisting of nine geometric designs on cards. The subject is asked to redraw them from memory after each one is presented individually.
The branch of physics which deals with the motions of material bodies, including kinematics, dynamics, and statics. When the laws of mechanics are applied to living structures, as to the locomotor system, it is referred to as BIOMECHANICAL PHENOMENA. (From Dorland, 28th ed)
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth.
Animals having a vertebral column, members of the phylum Chordata, subphylum Craniata comprising mammals, birds, reptiles, amphibians, and fishes.
A former branch of knowledge embracing the study, description, and classification of natural objects (as animals, plants, and minerals) and thus including the modern sciences of zoology, botany, and mineralogy insofar as they existed at that time. In the 17th, 18th, and 19th centuries it was much used for the generalized pursuit of certain areas of science. (Webster, 3d ed; from Dr. James H. Cassedy, NLM History of Medicine Division)
Common name for a family of eel-shaped jawless fishes (Myxinidae), the only family in the order MYXINIFORMES. They are not true vertebrates.
The use of instrumentation and techniques for visualizing material and details that cannot be seen by the unaided eye. It is usually done by enlarging images, transmitted by light or electron beams, with optical or magnetic lenses that magnify the entire image field. With scanning microscopy, images are generated by collecting output from the specimen in a point-by-point fashion, on a magnified scale, as it is scanned by a narrow beam of light or electrons, a laser, a conductive probe, or a topographical probe.
Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source.
Conferences, conventions or formal meetings usually attended by delegates representing a special field of interest.
A product of hard secondary xylem composed of CELLULOSE, hemicellulose, and LIGNANS, that is under the bark of trees and shrubs. It is used in construction and as a source of CHARCOAL and many other products.
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Transmission of energy or mass by a medium involving movement of the medium itself. The circulatory movement that occurs in a fluid at a nonuniform temperature owing to the variation of its density and the action of gravity. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed; Webster, 10th ed)
Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.
Oils derived from plants or plant products.
The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed)
Supplies used in building.
Characteristics or attributes of persons or things which elicit pleasurable feelings.
Chemical groups containing the covalent sulfur bonds -S-. The sulfur atom can be bound to inorganic or organic moieties.
A flammable, poisonous gas with a characteristic odor of rotten eggs. It is used in the manufacture of chemicals, in metallurgy, and as an analytical reagent. (From Merck Index, 11th ed)
The human being as a non-anatomical and non-zoological entity. The emphasis is on the philosophical or artistic treatment of the human being, and includes lay and social attitudes toward the body in history. (From J. Cassedy, NLM History of Medicine Division)

Soft tissue morphometry of the malleus-incus complex from micro-CT imaging. (1/936)

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Comparative effects of scaffold pore size, pore volume, and total void volume on cranial bone healing patterns using microsphere-based scaffolds. (2/936)

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In vivo quantification of subcutaneous and visceral adiposity by micro-computed tomography in a small animal model. (3/936)

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Multimodality rodent imaging chambers for use under barrier conditions with gas anesthesia. (4/936)

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Tumorigenic potential and disease manifestations of malignant B-cell variants differing in their fibronectin adhesiveness. (5/936)

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The leucine-rich amelogenin peptide alters the amelogenin null enamel phenotype. (6/936)

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Occult injury in the residual lung after pneumonectomy in mice. (7/936)

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The role of lipase and alpha-amylase in the degradation of starch/poly(epsilon-caprolactone) fiber meshes and the osteogenic differentiation of cultured marrow stromal cells. (8/936)

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This paper proposes a statistical multiscale homogenization method to extract effective elastic properties of cement paste on the basis of X-ray microtomography images. The procedure starts at the nanolevel of the C-S-H matrix. Because the highest resolution of current X-ray microtomography is at micrometer scale, C-S-H and CH remains unsegmented. The unresolved hydrated cement is homogenized by a two-step analytical method based on Mori-Tanaka (M-T) scheme. A statistical numerical homogenization method based on the Finite Element Method (FEM) was used to homogenize the elastic properties of cement pastes. Mean elastic properties showed good agreement with experimental results. The proposed multiscale method combines advanced analytical, numerical and experimental methods in a systematical way so that the inputs are phase material properties and X-ray microtomography images only. The novelty of this method is in the avoidance of any subjective decision ...
The salivary protein, statherin, plays an important role in enamel homeostasis. It forms a bioactive complex with calcium and phosphate releasing these ions when pH decreases. Statherin also forms part of the enamel pellicle forming a protective barrier against bacterial and dietary acids. The purpose of this thesis was two-fold: firstly, to study the effect of a 21 amino acid peptide identical to the N terminus of Statherin (StN21) on enamel de - and remineralisation in vitro and secondly, to undertake biocompatibility assays of this peptide to demonstrate its safety for use in a clinical trial. X-ray microtomography (XMT) is a quantitative, non-destructive method of measuring mineral change. Using XMT to quantify mineral changes, StN21 demonstrated a statistically significant decrease in demineralisation rate when compared to control lesions exposed to phosphate buffered saline (PBS). Whole Statherin protein and sodium fluoride solutions were used as positive controls and were found to have ...
Comparison of synchrotron radiation and conventional X-ray microcomputed tomography for assessing trabecular bone microarchitecture of human femoral ...
Thoracic imaging for small animals has emerged as an important tool for monitoring pulmonary disease progression and therapy response in genetically engineered animals. Micro-CT is becoming the standard thoracic imaging modality in small animal imaging because it can produce high-resolution images of the lung parenchyma, vasculature, and airways. Segmentation, measurement, and visualization of the airway tree is an important step in pulmonary image analysis. However, manual analysis of the airway tree in micro-CT images can be extremely time-consuming since a typical dataset is usually on the order of several gigabytes in size. Automated and semi-automated tools for micro-CT airway analysis are desirable. In this paper, we propose an automatic airway segmentation method for in vivo micro-CT images of the murine lung and validate our method by comparing the automatic results to manual tracing. Our method is based primarily on grayscale morphology. The results show good visual matches between ...
Lizard (Leiocephalus sp.) micro-CT scan. This is the type specimen for this species. Types are the original example against which all descriptions are compared. Types are therefore both scientifically valuable and in demand from researchers wishing to study them. Micro-CT was used to create a virtual copy of this type specimen to help build a digital collection. This image was acquired using X-ray micro-Computed Tomography (also known as micro-CT). A micro-CT scanner projects a beam of X-rays through the sample onto a detector panel. Images are collected over a 360° rotation and these are then reconstructed to form a virtual 3D model of the specimen. This virtual object that can be viewed from all angles and sliced open or digitally dissected. Image by Dan Sykes. - Stock Image C021/7082
The latest Paper of the Month from is X-ray micro-computed tomography (μCT): an emerging opportunity in parasite imaging by James D. B. OSullivan, Julia B
6. References. 1 Dewidar MM, Khalil KA, Lim JK. Processing and mechanical properties of porous 316L stainless steel for biomedical applications. Transactions of Nonferrous Metals Society of China. 2007;17(3):468-473. [ Links ] 2 Bender S, Chalivendra V, Rahbar N, El Wakil S. Mechanical characterization and modeling of graded porous stainless steel specimens for possible bone implant applications. International Journal of Engineering Science. 2012;53:67-73. [ Links ] 3 Eriksson M, Andersson M, Adolfsson E, Carlström E. Titanium-hydroxyapatite composite biomaterial for dental implants. Powder Metallurgy. 2006;49(1):70-77. [ Links ] 4 Rack HJ, Qazi JI. Titanium alloys for biomedical applications. Materials Science and Engineering: C. 2006;26(8):1269-1277. [ Links ] 5 Oksiuta Z, Dabrowski JR, Olszyna A. Co-Cr-Mo-based composite reinforced with bioactive glass. Journal of Materials Processing Technology. 2009;209(2):978-985. [ Links ] 6 Dourandish M, Godlinski D, Simchi A, Firouzdor V. Sintering of ...
2016 Elsevier B.V. Gas permeability (k) and porosity (f) are the most important parameters in CBM/ECBM and CCS in deep unmineable coal seams. k and f depend on the coal microstructure, and k and f significantly change with varying effective stress. However, how the coal microstructure is related to such permeability and porosity changes is only poorly understood. We thus imaged sub-bituminous coal samples at two resolutions (medium - 33.7 µm and high - 3.43 µm voxel size) in 3D with an x-ray micro-computed tomography as a function of applied effective stress; and investigated how cleat morphology, k and f are influenced by the changes in effective stress and how these parameters are interrelated. In the images, three phases were identified: microcleats (void), a mineral phase (carbonate) and the coal matrix. When effective stress increased, the cleats became narrow and closed or disconnected. This resulted in a dramatic permeability drop with increasing effective stress, while porosity ...
TY - GEN. T1 - Comparison of Early-stage Immobilization and Estrogen-deficiency Induced Bone Loss in Rats Assessed by In Vivo Micro-CT. AU - Brouwers, J.E.M.. AU - Rietbergen, van, B.. AU - Huiskes, R.. PY - 2007. Y1 - 2007. M3 - Conference contribution. SP - T462-. BT - 29th Annual meeting of the ASBMR. CY - United States, Honolulu. ER - ...
Bruker microCT can genuinely claim to be at the fore-front of the development of high performance micro-CT technology. Our research and development of 3D x-ray microscopy started in the early 1980s. This led to the first micro-CT imaging results being obtained in 1983-1987 and published in scientific journals and international conferences proceedings. Building on this early work, Bruker-microCT was founded in 1996, and within a year we were manufacturing a commercially available micro-CT scanner with spatial resolution in the micron range. In 2001 we produced the first high-resolution in vivo micro-CT scanner for small animal imaging. And in 2005 Bruker-microCTbecame the worlds only supplier of a laboratory nano-CT scanner with submicron spatial resolution. Responding to demand from the growing community of micro-CT users, we are continually active in research and development into new methods for non-destructive 3D microscopy. ...
Wilujeng, Indrawati and Santosa, Bagus Jaya 3D SEISMIC TOMOGRAPHY ANALYSIS OF JAPAN SUBSTRUCTURE USING LOCAL EARTHQUAKE TOMOGRAPHY. Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2015. ISSN 978-979-96880-8-8 ...
High-resolution micro computed tomography has enabled measurement of bone architecture derived from 3D representations of cancellous bone. Twenty-eight vertebral bodies were obtained from four embalmed male cadavers. From 3D anaglyphs, trabecular rod thickness and length were measured and the trabecular rod Buckling index was calculated. From 3D voxel-based datasets, bone volume density, trabecular thickness, and trabecular separation were measured. Also, trabecular bone pattern factor, structural model index, connectivity density, and degree of anisotropy were calculated. Bone volume density alone explains 59% of the variability in trabecular rod Buckling index. The addition of connectivity density, trabecular separation, and structural model index, in a multiple regression statistical model, improves the explanatory power to 77%. The relationships between measures of cancellous bone architecture and a derived measure of trabecular rod strength were investigated. Morphological descriptors of cancellous
microstructure; acoustic emission AE; rebound hammer; service life of a structure; horizontal casting; precipitation; natural frequency; reinforced concrete chimney; diagnostic; moisture safety; adhesion assessment; gantry crane; stress wave; materials research; acoustic methods; SEM-EDS analysis; SilverSchmidt; reinforced concrete grandstand stadium; concrete strength; autoclaved aerated concrete (AAC); concrete elements; reinforced concrete tanks; degree of degradation; fatigue tests; X-ray micro-computed tomography; GPR method; defects; singular value truncation; ultrasonic tomography; cement-based composites; SEM; moisture of AAC; sulphate corrosion; damage; strengthening; masonry structures; eddy-current method; non-destructive evaluation; non-destructive testing; NDT methods; Structural Health Monitoring; mercury intrusion porosimetry; temperature; vibration analysis; cesium; rebar location; nanoindentation; monitoring of structures; RMF technique; machine learning; lead; viscoelastic ...
Gypsum dehydration as a pore pressure diffusion process - insights from time-series Synchrotron X-ray microtomography, thermodynamic analysis and finite element modelling ...
For those who havent heard or read the story, its probably a little difficult to see the connection between dental research, X-ray science, and the Morecambe and Wise show.. Since the early 90s, I have been working on the design and application of X-ray microtomography (XMT) scanners, which are essentially microscopic forms of medical CT scanners. XMT differs from its full-size medical counterpart in that it is only used to scan small inanimate specimens (from millimetres to a few centimetres), it takes longer, and whereas with medical CT the X-ray system rotates about the patient, with XMT it is the specimen that rotates. In dentistry, we use XMT in research, where we can scan extracted human teeth and precisely map the mineral concentration in three dimensions. This enables us to study the way that teeth lose mineral under acid attack, and where possible, test experimental methods of reversing the process. Although most of the focus of our facility is on tooth and bone samples, we are often ...
TY - JOUR. T1 - Capillary trapping in sandstones and carbonates. T2 - dependence on pore structure. AU - Tanino, Yukie. AU - Blunt, Martin J.. PY - 2012/8. Y1 - 2012/8. N2 - Residual non-wetting phase saturation and wetting-phase permeability were measured in three limestones and four sandstones ranging in porosity from 0.13 to 0.28 and in absolute permeability from 2 × 10-15 to 3 × 10-12 m2. This paper focuses on the residual state established by waterflooding at low capillary number from minimum water saturation achieved using the porous plate technique, which yields the maximum residual under strongly water-wet conditions. The pore coordination number and pore body-throat aspect ratio of each rock were estimated using pore networks extracted from X-ray microtomography images of the rocks. Residual saturation decreases with increasing porosity, with no apparent difference in magnitude between the limestones and sandstones at a given porosity. Thus intraparticle/intra-aggregate microporosity ...
Abbans-Dessous 47°7.905N, 5°52.533E. Franche-Comté, France. Find: 2015 Jul 25. Classification: Ordinary chondrite (LL6). History: On 25 July 2015, while he was looking for fossils in the Franche-Comté region, geologist Quentin Louis discovered a small black stone in the vicinity of Abbans-Dessous village, and recognized it as a possible meteorite. On 3 August 2015, he contacted Fabien Kuntz, a meteorite hunter living nearby in Besançon, who confirmed the stone was a meteorite. Despite several days of hunting together in the area over the summer 2015, and a notice to the local population, no other stones were found.. Physical characteristics: A single, fully crusted, roughly cubic stone.. Petrography: Microscopic observations on a polished section show a recrystallized chondritic texture with chondrules making most of the volume. Plagioclase to 100 μm. Chromite to 150 μm. The bulk density (bulk volume from X-ray microtomography) is 3.15 g/cm3 in agreement with the average LL value ...
SkyScan produces a wide range of the systems for non-invasive three-dimensional x-ray microscopy and for small animal imaging with spatial resolution in the micron range.
Journal Articles. BROECKHOVEN C, DU PLESSIS A, HUI C. Functional trade-off between strength and thermal capacity of dermal armor: Insights from girdled lizards. Journal of the Mechanical Behavior of Biomedical Materials 2017; 74:189-194.. BROECKHOVEN C, DU PLESSIS A. Has snake fang evolution lost its bite? New insights from a structural mechanics viewpoint. Biology Letters 2017; 13(8):5 pages.. DU PLESSIS A, BROECKHOVEN C, GUELPA A, LE ROUX SG. Laboratory x-ray micro-computed tomography: A user guideline for biological samples. GigaScience 2017; 6(6):Article number gix027, 11 pages.. DU PLESSIS A, YADROITSAVA I, LE ROUX SG, YADROITSEV I, FIERES J, REINHART C, ROSSOUW P. Prediction of mechanical performance of Ti6Al4V cast alloy based on microCT-based load simulation. JOURNAL OF ALLOYS AND COMPOUNDS 2017; 724:267-274.. GEBRU A, BRYDEGAARD M, ROHWER EJ, NEETHLING PH. Probing insect backscatter cross-section and melanization using kHz optical remote detection system. Journal of Remote Sensing 2017; ...
Background: The pathomechanisms of atherosclerosis and vascular remodelling are under intense research. Only a few in vivo tools to study these processes longitudinally in animal experiments are available. Here, we evaluated the potential of micro-CT technology. Methods: Lumen areas of the common carotid arteries (CCA) in the ApoE,sup,-/-,/sup, partial carotid artery ligation mouse model were compared between in vivo and ex vivo micro-CT technique and serial histology in a total of 28 animals. AuroVist-15 nm nanoparticles were used as in vivo blood pool contrast agent in a Skyscan 1176 micro-CT at resolution of 18 μmeter voxel size and a mean x-ray dose of 0.5 Gy. For ex vivo imaging, animals were perfused with MicroFil and imaged at 9 μmeter voxel size. Lumen area was evaluated at postoperative days 7, 14, and 28 first by micro-CT followed by histology. Results: In vivo micro-CT and histology revealed lumen loss starting at day 14. The lumen profile highly correlated (r = 0.79, P,0.0001) ...
Microcomputed tomography (Micro CT) is a high-resolution imaging device, which produces non-destructive 3D images of a biological structure, like a tooth.
A single copy of these materials may be reprinted for noncommercial personal use only. Mayo, Mayo Clinic, MayoClinic.org, Mayo Clinic Healthy Living, and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. ...
The primary mission of the MicroCT Laboratory is to provide state-of-the-art 3D ex vivo imaging using microCT for both research and teaching. This facility is housed within the School of Veterinary Medicine and includes a state-of-the-art ex vivo desktop cone-beam micro-CT (Scanco Model 40) that is fully shielded. This scanner has a nominal best resolution of 6µm with a real resolution of 9µm and a maximum FOV of 37mm in diameter by 70mm in length. Services can include ex vivo x-ray microCT scanning of specimens measuring no more than 35mm in diameter and 70mm in length. Software is available to provide 3D reconstructions of scanned objects, and quantify bone architecture and density. The specimens utilized for microCT must have inherent radio opacity (e.g. bone) or can be rendered radio-opaque (e.g. utilizing contrast agents). Some examples of applications of microCT include evaluation of bone microarchitecture in normal and pathogenic states (e.g. fracture healing, defect healing, in the ...
Micro-Computed Tomography is based on the interaction between the radiation and the material (according to the Beer-Lambert law). In other words, the radiation transmitted is the information captured by a detection system in image form (radiography). In this manner, a slice of material within a solid can be described, based on the different images taken at various different angles. During the tomographic reconstruction process, the main objective is to reconstruct an object that is considered as a 2D distribution of some type of function μ(x,y), which represents the attenuation coefficient of the object in question. The reconstruction of the object is obtained by resolving a mathematical problem, generally implemented in several packages of software.. This reconstruction process makes it possible to easily obtain a volumetric representation of the object, enabling the study and evaluation of different parameters thereof (for example: dispersion of particles, detection of defects, density ...
Alzheimers Disease (AD) is a major concern for the elderly population, currently affecting over 670,000 people in the UK. With the continual increase in the age of the population the problem is expected to rise. There is no known cure to the condition and a definite diagnosis cannot be made in life. Clinical diagnosis is considered to be approximately 80% - 90% accurate, sometimes taking up to a year to assess. Early detection could aid in the care and possible development of better treatments or even a cure. AD has been shown to alter the structure and global texture of the brain. Studies using Magnetic Resonance imaging (MRI) and Computerised Tomography (CT) have been used to detect these changes with some success by some researchers. Positron Emission Tomography (PET) imaging is a functional imaging modality and in theory before structural changes are evident functional changes should be apparent. Therefore we utilise PET images for this study. This thesis will exploit the fact that AD ...
On the right, the concentration depth profile performed along the analysis direction (depth direction) clearly reveals differences between the interfaces (dissymmetrical interfaces): the Fe/TbCo2 interface (1nm thick) is thinner than the Fe/Co interface. This effect is attributed to Fe/Co interdiffusion controlled by the establishment of the Tb layer ...
臺大位居世界頂尖大學之列,為永久珍藏及向國際展現本校豐碩的研究成果及學術能量,圖書館整合機構典藏(NTUR)與學術庫(AH)不同功能平台,成為臺大學術典藏NTU scholars。期能整合研究能量、促進交流合作、保存學術產出、推廣研究成果。. To permanently archive and promote researcher profiles and scholarly works, Library integrates the services of NTU Repository with Academic Hub to form NTU Scholars.. ...
Historically researchers apply time consuming step serial sectioning and subsequent staining and imaging using light microscopy to analyse the lung morphometry. The data obtained using histology is limited to 2D and, as the pathology is often patchy, the results can be biased and incomplete due to heterogeneous pathological phenotypes. Obtaining an overall status of the entire lung is crucial for reliable and complete data. For instance, when screening the lung for metastasis: these can easily be missed when only a few cross sections are made ...
What is the little thing you can do to increase reproducibility, replicability and trust in science? How can reporting quality interfere with reproducibility issues and overall trust in science results? With that question in mind, we participated in the Reproducibility, Replicability and Trust in Science conference organised by the Wellcome Genome Campus from 9 to 11.... ...
The Scientific World Journal is a peer-reviewed, Open Access journal that publishes original research, reviews, and clinical studies covering a wide range of subjects in science, technology, and medicine. The journal is divided into 81 subject areas.
Abstract Micro-CT scanning is a non-destructive technique that can provide three-dimensional images of rock pore space at a resolution of a few microns. . However, these greyscale images cannot be directly input into simulators to predict flow prope
Micro-computed tomography (Micro-CT) is an X-ray imaging technique that produces highresolution 3D computerised virtual models of geological specimens based on the X-ray attenuation of different materials in the specimen. The virtual specimens are made up of voxels, the 3D equivalent of pixels, each assigned a gray value based on X-ray absorption. Micro-CT has enormous potential for allowing non-destructive, digital analysis of structure and composition when the mineralogical phases can be digitally separated. However, variation in X-ray flux between scans results in highly variable grayscale values for identical materials. Consequently, materials usually have to be segmented manually, which is subjective, inaccurate, labour-intensive and time consuming. Here we present a protocol and imaging software package that can be used to accurately and precisely extract quantifiable information in a repeatable and objective fashion. The software will allow the separation, visualisation, measurement ...
Fingerprint Dive into the research topics of Architectural changes in subchondral bone and its compliance in response to estrogen and progesterone: A micro-computed tomography study. Together they form a unique fingerprint. ...
The recent Spectre attack first showed how to inject incorrect branch targets into a victim domain by poisoning microarchitectural branch prediction history. In
Micro CT images (click to enlarge) P0 control P0 K14-Cre;Tgfbr2 fl/fl The complete dataset can be downloaded at FaceBase.org. ...
TESCAN is leading global producer and supplier of scanning electron microscopes, focused ion beam scanning electron microscopes and micro-CT solutions.
Bruker Introduces New SkyScan 1272, an Advanced Non-destructive X-Ray 3D Microscope System Enables Nondestructive High-Resolution micro-CT with 200 Megapixel Slices for Visualization of
A New Scientist note (points to PNAS paper):Post-mortems of binge-drinking adolescent monkeys have produced the best evidence yet that heavy drinking at an early age can do lasting damage to the brain. The worst damage was to stem cells destined to become neurons in the hippocampus, the brain area responsible for memory and spatial awareness.
Vertebrate hard tissues first appeared in the dermal skeletons of early jawless vertebrates (ostracoderms) and were further modified in the earliest jawed vertebrates. Fortunately, histological information is usually preserved in these early vertebrate fossils and has thus been studied for more than a century, done so by examining thin sections, which provide general information about the specific features of vertebrate hard tissues in their earliest forms. Recent progress in synchrotron X-ray microtomography technology has caused a revolution in imaging methods used to study the dermal skeletons of early vertebrates. Virtual thin sections obtained in this manner can be used to reconstruct the internal structures of dermal skeletons in three-dimensions (3D), such as vasculature, buried odontodes (tooth-like unites) and osteocytes. Several body scales of early vertebrates have been examined using this imaging method and in situ 3D models of internal structures are created. Andreolepis (an early ...
The purpose of this study was to investigate if in vivo micro-computed tomography (CT) is a reliable alternative to micro-CT scanning of a vascular corrosion cast. This would allow one to study the ea
TY - CONF. T1 - Three-Dimensional Visualisation and Analysis of Feto-Placental Vascular Cast Using Micro-Computed Tomography in A Rat Model. AU - Tongpob, Yutthapong. AU - Xia, Shushan. AU - Chivers, Emily. AU - Mehnert, Andrew. PY - 2019/4. Y1 - 2019/4. N2 - Many studies of the feto-placental vascular structure have utilised a range of two-dimensional (2D) and three-dimensional (3D) imaging techniques including ultrasound, electron microscopy, confocal microscopy and stereological techniques on systematic uniform random sections; and most recently, innovation with X-ray microtomography (micro-CT) with perfusion of radio-opaque compounds. The CT approach has been used to study feto-placental vasculature in mouse [1], rat [2] and human [3]; this approach embodies particular advantages: (i) revealing the 3D structure in high resolution and (ii) permitting multiple rescanning without irreversibly destroying the sample casts. Nevertheless, some challenges with the micro-CT approach still remain: ...
Read Three-dimensional computed tomography analysis of the vascular anatomy of the splenic hilum for gastric cancer surgery, Surgery Today on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Live imaging of whole invertebrates can be accomplished with X-ray micro-computed tomography (micro-CT) at 10-100 μm spatial resolution. However, image quality could be compromised by the movement of live subjects, producing image artefacts. We tested the feasibility of using CO2 gas to induce temporary full-immobilization of sufficient duration to image live insects based on their ability to tolerate hypoxic conditions. Additionally, we investigated the effects of these prolonged hypoxic conditions on several life history traits of a lepidopteran species. Live Colorado potato beetle (CPB) and true armyworm (TAW) adults were immobilized under a constant CO2 gas flow (0.5 L/min), and scanned using micro-CT (80 kVp; 450 μA). An L8 (24) orthogonal array (OA) was used to evaluate the effects of prolonged CO2-induced anesthesia on the recovery, longevity, and incidence of mating of TAW adults. The variable factors were age (immature and mature), sex (female and male), exposure time (3 and 7 h), and
This paper presents a three dimensional image processing strategy that has been developed to quantitatively analyze and correlate the path of a fatigue crack with the lamellar microstructure found in Ti-6246. The analysis is carried out on X-ray microtomography images acquired in situ during uniaxial fatigue testing. The crack, the primary β-grain boundaries and the α lamellae have been segmented separately and merged for the first time to allow a better characterization and understanding of their mutual interaction. This has particularly emphasized the role of translamellar crack growth at a very high propagation angle with regard to the lamellar orientation, supporting the central role of colonies favorably oriented for basal 〈a〉 slip to guide the crack in the fully lamellar microstructure of Ti alloy. - Highlights: • 3D tomography images reveal strong short fatigue crack interaction with α lamellae. • Proposed 3D image processing methodology makes their segmentation possible. • ...
A fast, powerful and stable filter based on combined wavelet and Fourier analysis for the elimination of horizontal or vertical stripes in images is presented and compared with other types of destriping filters. Strict separation between artifacts and original features allowing both, suppression of the unwanted structures and high degree of preservation of the original image information is endeavoured. The results are validated by visual assessments, as well as by quantitative estimation of the image energy loss. The capabilities and the performance of the filter are tested on a number of case studies related to applications in tomographic imaging. The case studies include (i) suppression of waterfall artifacts in electron microscopy images based on focussed ion beam nanotomography, (ii) removal of different types of ring artifacts in synchrotron based X-ray microtomography and (iii) suppression of horizontal stripe artifacts from phase projections in grating interferometry. ...
In this work we fabricated alumina samples by the freeze-casting technique using tert-butanol as the solvent. The prepared materials were examined by scanning electron microscopy and X-ray microtomography. Next, they were coated with sol-gel silica films by dip-coating. Permeability tests were carried out in order to assess the permeation behavior of the materials processed in this study. We observed that the sintering time and alumina loading showed a remarkable effect on both the structural properties and flexural strength of the freeze-cast samples. Nitrogen adsorption tests revealed that the silica prepared in this study exhibited a microporous structure. It was observed that the presence of silica coatings on the alumina surface decreased the CO{sub 2} permeance by about one order of magnitude. Because of the similar kinetic diameters of nitrogen and carbon dioxide, the CO{sub 2}/N{sub 2} system showed a separation efficiency that was lower than that observed for the He/CO{sub 2} and ...
From 5th to 17th February 2017, we organized the training in Analytical Methods in Geology for students of AGH University of Science and Technology from Krakow in the Centre of Education of Slovak Academy of Sciences in Banská Bystrica. AGH management has decided for this external form of education on the basis of positive experiences with our laboratories and a wide range of modern analytical methods. Overall, 24 graduated students of mineralogy, during two one-week courses, got through the intensive theoretical and practical laboratory training in isotope geochemistry, paleolimnologic field methods, X-ray fluorescence spectrometry, X-ray microtomography, microthermometry and geofluids and creation of 3D digital models using terrestrial laser scanner. At the end of the stay, each student prepared the seminar paper on each of analytical method. For its preparation, the students used computers of our library and electronic access to world scientific databases. The training in particular ...
Well-structured soils are generally considered to have bimodal pore structure, including textural pores between soil particles and structural pores between soil aggregates. Bimodal pore structure has previously been inferred indirectly from the soil water retention curve (SWRC) but our understanding of the precise 3-D pore geometry that regulates this curve is limited. The objective of this study was to investigate the bimodal pore structure of a paddy soil under different fertilization regimes using both SWRC and X-ray micro-Computed Tomography (micro-CT), an imaging approach with the aim of comparing the two methods. Undisturbed soil aggregates and soil cores were collected from the surface layer of a long-term unfertilized control (CK), inorganically fertilized (NPK), and organically and inorganically fertilized (NPKOM) paddy soils. The aggregates and cores were scanned using micro-CT and pore structure analyzed. The SWRCs were measured on the same CT-scanned soil cores. Three widely used ...
Curing is generally required to stabilize film coating from aqueous polymer dispersion. This post-coating drying step is traditionally carried out in static conditions, requiring the transfer of solid dosage forms to an oven. But, curing operation performed directly inside the coating equipment stands for an attractive industrial application. Recently, the use of various advanced physico-chemical characterization techniques i.e., X-ray micro-computed tomography, vibrational spectroscopies (near infrared and Raman) and X-ray microdiffraction, allowed new insights into the film-coating structures of dynamically cured tablets. Dynamic curing end-point was efficiently determined after 4 h. The aim of the present work was to elucidate the influence of curing conditions on film-coating structures. Results demonstrated that 24 h of static curing and 4 h of dynamic curing, both performed at 60 degrees C and ambient relative humidity, led to similar coating layers in terms of drug release properties, porosity,
Materials characterization using X-ray imaging has enabled development of advanced composites that will open up new opportunities to improve manufacturing. In order to deploy reinforced materials, such as ceramic matrix composites (CMC), several structures must be accounted for at all times during tensile or compressive loading experiments. In collaboration with DOE imaging facilities, we have investigated data generated at X-ray beamlines for non-destructive three-dimensional characterization of objects. Experiments using X-ray are widely performed in academia and industry including medical imaging, material science, electronics, geology, and others. As a result of joint data exploration, we have developed FibriPy, a computer-aided fiber detector, tracker and analyzer designed to recognize patterns from micro-computed tomography (microCT). FibriPy is a software environment that combines user-friendly dashboards with programmable functions to support the analysis automation of 3D microCT stacks. While
This study evaluated the stress distribution in endodontically treated teeth, weakened (W) or not weakened (NW), restored with different materials of prosthetic crown using 3D-FEA. Models of a maxillary canine were constructed based on micro-CT images and divided into the groups: G1 (control) - sound tooth; G2 to G7 - endodontically treated teeth restored with glass fiber post (GFP); which G2 to G4 simulated NW root and G5 to G7 simulated W root. For crown material the teeth were restored with: G2 and G5: metallic coping and ceramic veneering, G3 and G6: zirconia coping and ceramic veneering, G4 and G7: alumina coping and ceramic veneering ...
Scattered photons highly degrade the quality of X-ray images and their effect has become more important due to the increasing interest in cone-beam geometry for the acquisition of CT (CBCT) and micro-CT data. The random nature of scatter events and the great i Scattered photons highly degrade the quality of X-ray images and their effect has become more important due to the increasing interest in cone-beam geometry for the acquisition of CT (CBCT) and micro-CT data. The random nature of scatter events and the great influence of the sample suggest that the most accurate methods for their estimation are Monte Carlo (MC) techniques, but their use is usually hampered by the large computation time required to obtain an acceptable estimation of the scattered radiation. We present an approach for scatter correction in CBCT by MC estimation, speeding up the computation by means of general purpose graphic processing units (GPGPU) and developing a framework for the automatic correction and reconstruction ...
© 2019 American Society for Surgery of the Hand Purpose: The anatomy of the radial head and capitellum has been extensively studied; however, the anatomy of the radial notch of the ulna (RNU) has received little attention. This imaging-based anatomic study characterizes the morphology of the RNU. Methods: Ninety-eight cadaveric arms (57 male, 72 ± 14 y) were imaged with computed tomography, and 3-dimensional reconstructions of the proximal ulna were constructed. The anteroposterior and proximal-distal dimensions of the RNU as well as the radius of curvature at standardized levels were measured in 2-mm increments. The orientation of the RNU was also determined. Results: The proximal-distal and anteroposterior dimensions of the RNU were 12 ± 2 mm (range, 7-16 mm) and 18 ± 3 mm (range, 12-24 mm), respectively. The average radius of curvature of the RNU was 15 ± 0 mm (range, 15-16 mm). The radius of curvature did not change significantly when comparing the proximal and distal aspect of the RNU. The RNU
In vivo animal testing has demonstrated that REGENESORB material is bioabsorbable and is replaced by bone. Implants (9x10 mm) were implanted in ovine cancellous bone and compared to an empty defect (9x10 mm) at 6, 12, 18, and 24 months (n=6). Micro-CT analysis demonstrated that by 24 months, bone in-growth into this material (289.5 mm3) was significantly greater (p,0.05) than bone in-growth into an empty defect (170.2mm3) and reaches a bone volume not statistically different from intact bone (188.2 mm3). Results of in vivo simulation have not been shown to quantitatively predict clinical performance. Data on file at Smith & Nephew in report 15000897 ...
Journal of Neuro-Ophthalmology keeps pace with important advances in all spheres of the neurologic and ophthalmologic sciences. Clinicians and researchers worldwide report on recent developments in diagnosing and treating ophthalmologic, neurologic, endocrine, inflammatory, and neoplastic conditions affecting the oculomotor and visual systems. The Journal publishes original, peer-reviewed articles on both clinical and basic aspects of neuro-ophthalmology. Other regular features include reviews, Viewpoints, Photoessays, editorials, letters, and special features including interviews, historical vignettes, and NANOS news.
I focus on verification of true bone matrix (or when relevant, cartilage matrix) production, including crosslinked type I collagen in extracellular matrix, separated from the surrounding extracellular fluid by epithelial-like osteoblats. I have particular expertise in analysis of transport by bone of mineral and acid to produce matrix.. Methods include advanced microscopy of bone with and without decalcification, and in some cases electron microscopy. I have and run Bruker micro-CT analysis. I have equipment to make and analyze cell membrane vesicles and vesicle ion transport. I do sections of bone with and without decalcification and analysis of extracellular bone matrix. We run common biochemical methods including quantitative PCR and fluorescent labels for cell preparations, including digital analysis of labeling using inverted fluorescence microscopes. ...
inproceedings{BUT92712, author=Petr {Marcián} and Libor {Borák} and Zdeněk {Majer} and Zdeněk {Florian} and Jozef {Kaiser} and Veronika {Konečná}, title=The computational model of dental implant interaction with bone tissue, annote=The paper deals with computational modeling of dental implant interaction with bone tissue using advanced geometry model of mandible. The bone model includes detailed trabecular architecture which is based on micro-CT data. Implant interaction with cortical bone as well as with trabeculae under mechanical loading and using this advanced model is assessed by means of implant displacements and bone strain intensity., address=British Library Cataloguing in Publication Data, booktitle=Computer Methods in Biomechanics and Biomedical Engineering 2012, chapter=92712, howpublished=online, institution=British Library Cataloguing in Publication Data, year=2012, month=june, pages=910--915, publisher=British Library Cataloguing in Publication Data, ...
This report describes the first human retrieval of a polycarbonate-urethane (PCU) acetabular cup implanted for 10.5 months that was revised for pain of unknown origin. By using a micro-CT analysis, the articulating surface was determined to have a wear rate of less than 1.4 mm3 per year. An analysis of the synovial fluid retrieved at the time of revision found an average particle size of 1 μm diameter. Overall, the surgical findings and analysis were consistent with the results observed in laboratory and animal studies. The histology and synovial fluid analysis found sparse evidence of particulate debris and no synovitis, indicating the potential of this articulating material for use as a bearing surface.. ...
Abstract Objectives Tubules dominate the microstructure of dentin, and in crowns of human teeth they are surrounded by thick mineralized peritubular cuffs of high stiffness. Here we examine the three-dimensional (3D) arrangement of tubules in relation to enamel on the buccal and lingual aspects of intact premolars and molars. Specifically we investigate the angular orientation…
Edinburgh, Scotland: Proceedings of the Annual Workshop of COST Action FP0802: Micro-characterisation of wood materials and properties , 2012. , 40-41 p. ...
Fibrous structures mimicking the morphology of the natural extracellular matrix are considered promising scaffolds for tissue engineering. This work aims to develop a novel hierarchical starch-based scaffold. Such scaffolds were obtained by a combination of starch-polycaprolactone micro- and polycaprolactone nano-motifs, respectively produced by rapid prototyping (RP) and electrospinning techniques. Scanning electron microscopy (SEM) and micro-computed tomography analysis showed the successful fabrication of a multilayer scaffold composed of parallel aligned microfibres in a grid-like arrangement, intercalated by a mesh-like structure with randomly distributed nanofibres (NFM). Human osteoblast-like cells were dynamically seeded on the scaffolds, using spinner flasks, and cultured for 7…. ...
Micro Photonics Inc. is offering the SkyScan 1272, a benchtop x-ray micro-CT (computed tomography) system from Bruker MicroCT that can nondestructivel
Cover: How other animals see the world has always intrigued us, not least because their eyes are often notably different from ours. In visually mediated decision making, regional specialisations of eyes largely determine the information animals have for critical judgements. Bagheri et al. (jeb210195) present a new method for estimating the spatial resolution of compound eyes, using 3D micro-CT images of preserved animals. This method estimates the way in which a compound eye samples the visual field by mapping the viewing directions of individual photoreceptors (white dots) and calculating spatial resolution in different directions of view. This study reveals that fiddler crabs see the world with two parallel streaks located just above and below the visual horizon. Picture credit: Zahra Bagheri and Jeremy Shaw. ...
Ismael Himar Falcon‐Suarez, Giorgos Papageorgiou, Zhaoyu Jin, Andrea Muñoz‐Ibáñez, Mark Chapman, Angus I. Best (2020). CO2‐Brine Substitution Effects on Ultrasonic Wave Propagation Through Sandstone With Oblique Fractures. 10.1029/2020GL088439. Ben Callow, Ismael Falcon-Suarez, Hector Marin-Moreno, Jonathan M Bull, Sharif Ahmed (2020). Optimal X-ray micro-CT image based methods for porosity and permeability quantification in heterogeneous sandstones. 10.1093/gji/ggaa321. Ismael Himar Falcon-Suarez, Laurence North, Ben Callow, Gaye Bayrakci, Jon Bull, Angus Best (2020). Experimental assessment of the stress-sensitivity of combined elastic and electrical anisotropy in shallow reservoir sandstones. 10.1190/geo2019-0612.1. */ Marcella Dean, Jerry Blackford, Douglas Connelly, Rob Hines (2020). Insights and guidance for offshore CO2 storage monitoring based on the QICS, ETI MMV, and STEMM-CCS projects. 10.1016/j.ijggc.2020.103120. Christoph Böttner, Matthias Haeckel, Mark Schmidt, Christian ...
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Histologic section; Micro-computed tomography (μCT, micro-CT); Quantitative bone morphometry; Bone architecture; Trabecular bone; Iliac ...
Joachim Ohser and Dascha Dobrovolskij of the University of Applied Sciences in Darmstadt, Germany, together with Jorge Lacayo-Pineda of Continental, and Matthew Putman of the imaging company Nanotronics in New York, US, wanted to determine whether a new imaging platform developed by Nanotronics, nSPEC 3D, could offer an alternative, foolproof method of estimating the size distribution. Based on radiometric stereo microscopy, the method involves illuminating a sample with six LEDs around the microscopes objective, pointing inwards at 45°. The six resultant 2D images are combined by a Nanotronics algorithm to produce a 3D, stereoscopic image of the samples surface.. At the ESRF beamline ID19, Ohser could compare the size distribution of filler particles in rubber samples given by nSPEC 3D with that given by the gold standard of 3D tomography, synchrotron microtomography. The application of coherent illumination combined with phase-retrieval techniques [at ID19] allowed 3D image acquisition ...
Joachim Ohser and Dascha Dobrovolskij of the University of Applied Sciences in Darmstadt, Germany, together with Jorge Lacayo-Pineda of Continental, and Matthew Putman of the imaging company Nanotronics in New York, US, wanted to determine whether a new imaging platform developed by Nanotronics, nSPEC 3D, could offer an alternative, foolproof method of estimating the size distribution. Based on radiometric stereo microscopy, the method involves illuminating a sample with six LEDs around the microscopes objective, pointing inwards at 45°. The six resultant 2D images are combined by a Nanotronics algorithm to produce a 3D, stereoscopic image of the samples surface.. At the ESRF beamline ID19, Ohser could compare the size distribution of filler particles in rubber samples given by nSPEC 3D with that given by the gold standard of 3D tomography, synchrotron microtomography. The application of coherent illumination combined with phase-retrieval techniques [at ID19] allowed 3D image acquisition ...
Main bone parameters from analysis: TV (total volume [mm3]), BV (bone volume [mm3]), BV/TV, Tb.Th (thickness of the trabecular structure), Tb.N (number of trabeculae), Tb.Sp (trabecular separation ...
One my images is featured on our OBCD website as Image of the Month. It represents a 3D reconstruction of a mouse femoral trabecular bone micro-CT. The black and white section on the left is the original unaltered reconstruction, the coloured image in the middle represents the trabecular bone thickness, and the bubbly section on the right illustrates spacing in between the trabeculae. ...
It can hardly be argued that cardiac imaging methodologies targeting small-animal models have been crucial for rapidly transitioning therapies from bench to bedside. The adaptation of ultrasound for imaging murine hearts, for example, has allowed characterization of the developing and adult rodent heart, making it an essential tool for the study of developmental biology and cardiovascular disease. Nevertheless, additional imaging tools may prove useful adjuncts and/or alternatives to such established traditional modalities.. Ideally, a cardiovascular imaging modality should provide structural-functional quantitation and be noninvasive, fast, cost effective, precise, and accurate. Although the combination of echocardiography and small-animal cardiac magnetic resonance has been proven to meet several of these criteria, there is certainly room for other modalities to be used as well. At our institution, experimentation with a micro-computed tomography (CT) scanner eventually produced ...
NEW PRODUCT: SkyScanTM 1278, the worlds fastest, low-dose, high-resolution micro-CT: With the launch of the next-generation SkyScan 1278 micro-CT system for in vivo X-ray computed tomography, Bruker is addressing the latest needs of preclinical imaging scientists striving to reduce the radiation dose used in animal studies, while maintaining highest image quality. As part of the development, Bruker has created a new micro-CT spatial beam shaper, which reduces the absorbed dose by up to five times, while maintaining high quality image output. The SkyScan 1278 has a highly sensitive flat-panel detector that is able to deliver images of mouse heart and lung activities even without a contrast agent. Such images allow the user to explore cardiac and respiratory function, while reducing animal stress and the cost of the study. A full-body animal scan can take 8 seconds or less, reducing run times and increasing the speed of data collection. FIRST CUSTOMER INSTALLATION: Bruker announces the first ...
Video created by Duke University, North Carolina State University, The University of North Carolina at Chapel Hill for the course Nanotechnology: A Makers Course. In this module, we will see demonstrations of micro-computed tomography, X-ray ...
Zetec delivers leading nondestructive testing (NDT) solutions that ensure better inspection results for both eddy current & UT technologies. Visit us today.
"X-ray computed microtomography of Megachirella wachtleri". Scientific Data. 5: Article number 180244. Bibcode:2018NatSD... ... 2018) perform X-ray scans at the micron scale of the holotype specimen of Megachirella wachtleri. Fossil trackways probably ... Dennis F. A. E. Voeten; Tobias Reich; Ricardo Araújo; Torsten M. Scheyer (2018). "Synchrotron microtomography of a Nothosaurus ... utilizing both X-ray and neutron computed tomography, is published by Jones et al. (2018). A study on the anatomy of the ...
The X-ray line beam is then translated across the part and data is collected by the detector. The data is then reconstructed to ... "3D Micro-Tomography - A Powerful Engineering Tool". 3D Scanning Technologies. July 5, 2010. Noel, Julien. "Advantages of CT in ... Industrial CT scanning (3D X-ray) is used to detect flaws inside a part such as porosity, an inclusion, or a crack. Metal ... Bull, D. J.; Helfen, L.; Sinclair, I.; Spearing, S. M.; Baumbach, T. (2013). "A comparison of multi-scale 3D X-ray tomographic ...
X-ray Computed Micro-Tomography of the Divje Babe 'Flute'*". Archaeometry. 54 (3): 581-590. doi:10.1111/j.1475-4754.2011.00630. ...
Hünicken's identification relied heavily on X-ray microtomography of the holotype. Additional hidden structures - such as a ...
CS1 maint: discouraged parameter (link) Russell Garwood, Jason A. Dunlop & Mark D. Sutton (2009). "High-fidelity X-ray micro- ... Recent X-ray imaging revealed that these arachnids were covered by protective spikes. Woodward, H. 1871. On the discovery of a ...
"High-fidelity X-ray micro-tomography reconstruction of siderite-hosted Carboniferous arachnids". Biology Letters. 5 (6): 841- ... Recent x-ray imaging revealed that Eophrynus prestvicii were covered by protective spikes on the back-half of its body. This ...
Russell Garwood, Jason A. Dunlop & Mark D. Sutton (2009). "High-fidelity X-ray micro-tomography reconstruction of siderite- ... revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids". Zoological Journal of ...
doi:10.1007/s12052-011-0357-y. Garwood, Russell J.; Dunlop, Jason A.; Sutton, Mark D. (2009). "High-fidelity X-ray micro- ... Garwood, Russell J.; Sutton, Mark D. (2010). "X-ray micro-tomography of Carboniferous stem-Dictyoptera: New insights into early ...
"Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales". Nature. 450 (7169): 549-52. ... "Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales". Nature. 450 (7169): 549-52. ... A 2007 study examining phase-contrast X-ray images of gymnosperm seeds suggested that the supported the Anthophyte hypothesis. ... Ray MM, Rothwell GW, Stockey RA (September 2014). "Anatomically Preserved Early Cretaceous Bennettitalean Leaves: ...
Russell Garwood, Jason A. Dunlop & Mark D. Sutton (2009). "High-fidelity X-ray micro-tomography reconstruction of siderite- ...
"Phase-contrast X-ray microtomography links Cretaceous seeds with Gnetales and Bennettitales". Nature. 450 (7169): 549-552. ... Ray, Pallav (ed.), "Itajuba yansanae Gen and SP NOV of Gnetales, Araripe Basin (Albian-Aptian) in Northeast Brazil", Climate ...
Garwood, R.; Dunlop, J. A.; Sutton, M. D. (2009). "High-fidelity X-ray micro-tomography reconstruction of siderite-hosted ...
doi:10.1016/S1474-7065(03)00121-9. Russell Garwood, Jason A. Dunlop & Mark D. Sutton (2009). "High-fidelity X-ray micro- ...
"High-fidelity X-ray micro-tomography reconstruction of siderite-hosted Carboniferous arachnids". Biology Letters. 5 (6): 841- ... revealed by X-ray computed tomography, with a cladistic analysis of the extinct trigonotarbid arachnids". Zoological Journal of ...
"A model-based correction method for beam hardening artefacts in X-ray microtomography". Journal of X-ray Science and Technology ... Barium sulfate suspension Dosimetry MRI versus CT Tomosynthesis Virtopsy X-ray microtomography Xenon-enhanced CT scanning "CT ... CT scanners use a rotating x-ray tube and a row of detectors placed in the gantry to measure X-ray attenuations by different ... Contrast media used for X-ray CT, as well as for plain film X-ray, are called radiocontrasts. Radiocontrasts for CT are, in ...
Garwood, R.; Sutton, M. (2010). "X-ray micro-tomography of Carboniferous stem-Dictyoptera: new insights into early insects". ...
The x-ray synchrotron microtomography study of early H. sapiens sapiens argues that this difference existed between the two ... "Nondestructive imaging of hominoid dental microstructure using phase contrast X-ray synchrotron microtomography". Journal of ... calculated using the noninvasive imaging of growth patterns in tooth enamel by means of x-ray synchrotron microtomography. This ...
ISBN 978-0-521-82149-0. Garwood, Russell J.; Sutton, Mark D. (2010). "X-ray micro-tomography of Carboniferous stem-Dictyoptera ...
Garwood, Russell J.; Sutton, Mark D. (2010). "X-ray micro-tomography of Carboniferous stem-Dictyoptera: New insights into early ...
"Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography". Nature ...
"Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography". Nature ... requires obtaining a sample from an object or artwork and exposing it to X-Ray radiation X-Ray Fluorescence Spectroscopy (XRF) ... For example, organic materials are likely to be destroyed if exposed to too much radiation, a concern when doing X-ray and ... Can identify elements both on the surface and sub-surface by performing x-ray scans over the entirety of an artwork Non- ...
"Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography". Nature ... An X-ray of the Ghent Altarpiece, painted by Jan Van Eyck, in Saint Bavo Cathedral in Ghent, Belgium revealed the structure and ... X-ray spectromicroscopy has also been used to analyse the reactions of pigments in paintings. For example, in analysing colour ... An X-ray of the painting revealed that Rembrandt fine-tuned the composition several times, alternating the glances between the ...
... had been previously scanned using X-ray microtomography (XMT), a technology used in dental and other medical, industrial, and ... "Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography". Nature ...
It is relatively commonplace to study the internal details of fossils using X-ray microtomography. Paleontology, biology, ...
Biomechanics of dromaeosaurid dinosaur claws: application of x-ray microtomography, nanoindentation and finite element analysis ...
An X-ray microtomography (Micro-CT) scanner creates a 3-dimensional image of the sample. An X-ray scanner can produce a spot as ... Nicholas Wade (January 20, 2015). "Unlocking Scrolls Preserved in Eruption of Vesuvius, Using X-Ray Beams". The New York Times ... created a set of computer programs called Volume Cartography to reconstruct the layers of text in a digital X-ray image of the ... "Revealing letters in rolled Herculaneum papyri by X-ray phase-contrast imaging". Nature Communications. 6: 5895. Bibcode: ...
San Francisco and the Director of the National Center for X-ray Tomography. Her research focus on X-ray microtomography for ... The NCXT is home to the world's first soft x-ray microscope designed specifically for biomedical research. Larabell received ... UCSF profiles - Carolyn Larabell Bay Area To Get Unique X-Ray Microscopy Resource - Berkeley Lab News Carolyn Larabell CV (2015 ... Larabell is currently the director the National Center for X-ray Tomography (NCXT) at Lawrence Berkeley National Laboratory, ...
"Phase contrast X-ray synchrotron microtomography and the oldest damselflies in amber (Odonata: Zygoptera: Hemiphlebiidae)". ...
Application of X-Ray Microtomography, Nanoindentation, and Finite Element Analysis". The Anatomical Record: Advances in ... using X-ray imaging to create a three-dimensional contour map of a forelimb claw from Velociraptor. For comparison, they ...
"3D experimental investigation of the microstructure of cement pastes using synchrotron X-ray microtomography (μCT)". Cement and ...
Dual energy X-ray absorptiometry[edit]. Main article: Dual energy X-ray absorptiometry ... Main article: X-ray image intensifier. As an alternative to X-ray detectors, image intensifiers are analog devices that readily ... which generate X-rays from X-ray tubes. The resultant images from the radiograph (X-ray generator/machine) or CT scanner are ... an X-ray source and its associated detectors rotate around the subject which itself moves through the conical X-ray beam ...
X-ray microtomography. *Electron beam tomography. Targets. *Coronary *Calcium scan. *CT angiography ...
X-ray microtomography(英语:X-ray microtomography). *Electron beam tomography(英语:Electron beam tomography) ... DXA(英语:Dual-energy X-ray absorptiometry)/DXR(英语:Digital X-ray radiogrammetry) ... KUB(英语:Kidneys, ureters, and bladder x-ray). * ... gamma ray: Myocardial perfusion imaging(英语:Myocardial perfusion ...
X-ray microtomography. *Electron beam computed tomography. *Cone beam computed tomography. Targets. *Coronary *Calcium scan ...
X-ray microtomography. *Electron beam computed tomography. *Cone beam computed tomography. Targets. *Coronary *Calcium scan ...
Confocal X-ray fluorescence imaging is a newer technique that allows control over depth, in addition to horizontal and vertical ... The signal was visualized by a CRT of an oscilloscope, the cathode ray was moved simultaneously with the objective. A special ... "Confocal X-ray Fluorescence Imaging and XRF Tomography for Three Dimensional Trace Element Microanalysis". Microscopy and ...
X-ray images are then taken in a supine position at intervals of 20-30 minutes. Real-time fluoroscopy is used to assess bowel ... Barium X-ray examinations are useful tools for the study of appearance and function of the parts of the gastrointestinal tract ... Barium swallow X-ray examinations are used to study the pharynx[4] and esophagus.[2] ... As a result, areas coated by barium sulfate will appear white on an X-ray film. The passage of barium through the ...
X-ray microtomography reveals the unerupted lower third incisor (i3), canine (c1), third premolar (p3), and fourth premolar (p4 ...
"X-ray micro-tomography of Carboniferous stem-Dictyoptera: New insights into early insects". Biology Letters. 6 (5): 699-702. ... "High-fidelity X-ray micro-tomography reconstruction of siderite-hosted Carboniferous arachnids". Biology Letters. 5 (6): 841- ...
"A model-based correction method for beam hardening artefacts in X-ray microtomography". Journal of X-ray Science and Technology ... Contrast media used for X-ray CT, as well as for plain film X-ray, are called radiocontrasts. Radiocontrasts for X-ray CT are, ... T: X-ray tube D: X-ray detectors X: X-ray beam R: Gantry rotation ... X-ray computed tomography (X-ray CT), computerized axial ... Computed tomography operates by using an X-ray generator that rotates around the object; X-ray detectors are positioned on the ...
"X-ray micro-tomography of Carboniferous stem-Dictyoptera: New insights into early insects". Biology Letters. 6 (5): 699-702. ...
... and X-ray angiography), differences in the mechanism by which this damage takes place suggests that the cancer risk of MRI, if ... X-ray microtomography. *Electron beam computed tomography. *Cone beam computed tomography. Targets. *Coronary *Calcium scan ...
Ray, C. Claiborne (28 May 2012). "The mighty tick". New York Times. Retrieved 15 December 2016.. ... "Microtomography of the Baltic amber tick Ixodes succineus reveals affinities with the modern Asian disease vector Ixodes ...
It is relatively commonplace to study the internal details of fossils using X-ray microtomography.[19][20] Paleontology, ...
Another extensive use of scintillography is in medical imaging techniques which use gamma ray detectors called gamma cameras. ... Scintigraphy is unlike a diagnostic X-ray where external radiation is passed through the body to form an image. ... images in a similar process to the capture of x-ray images. In contrast, SPECT and positron emission tomography (PET) form 3- ... X-ray microtomography. *Electron beam computed tomography. *Cone beam computed tomography. Targets. *Coronary *Calcium scan ...
In modern PET-CT scanners, three-dimensional imaging is often accomplished with the aid of a CT X-ray scan performed on the ... Time-of-flight PET makes use of very fast gamma-ray detectors and data processing system which can more precisely decide the ... Alternative methods of scanning include x-ray computed tomography (CT), magnetic resonance imaging (MRI) and functional ... Contemporary scanners can estimate attenuation using integrated x-ray CT equipment, however earlier equipment offered a crude ...
2009). "Biomechanics of dromaeosaurid dinosaur claws: Application of X-ray microtomography, nanoindentation, and finite element ... 1-4 in Cooper, A., Raymond, C., and Team, I.E. (eds.), Antarctica: a Keystone in a Changing World - Online Proceedings for the ...
... (DXA, previously DEXA[1]) is a means of measuring bone mineral density (BMD). Two X-ray beams ... The radiation dose of current DEXA systems is small[24], as low as 0.001 mSv, much less than a standard chest X-ray.[25]. ... In DXA, bone mineral content (measured as the attenuation of the X-ray by the bones being scanned) is divided by the area (also ... Dual-energy X-ray absorptiometry is the most widely used and most thoroughly studied bone density measurement technology. ...
X-ray microtomography. *Electron beam computed tomography. *Cone beam computed tomography. Targets. *Coronary *Calcium scan ...
X-ray computed tomography X-ray CT, CATScan 1971 X-ray microtomography X-ray microCT ... Synchrotron X-ray tomographic microscopyEdit. A new technique called synchrotron X-ray tomographic microscopy (SRXTM) allows ... Multiple X-ray computed tomographs (with quantitative mineral density calibration) stacked to form a 3D model. ... By moving an X-ray source and the film in opposite directions during the exposure, and modifying the direction and extent of ...
Time-of-flight PET makes use of very fast gamma-ray detectors and data processing system which can more precisely decide the ... Alternative methods of scanning include x-ray computed tomography (CT), magnetic resonance imaging (MRI) and functional ... Contemporary scanners can estimate attenuation using integrated x-ray CT equipment, in place of earlier equipment that offered ... radiation dosage for other medical procedures range from 0.02 mSv for a chest x-ray and 6.5-8 mSv for a CT scan of the chest.[ ...
of a ray at position, on the projection at angle θ. {\displaystyle \theta }. , is given by the line integral: p. θ. (. r. ). = ... 3). In X-ray CT, the line integral represents the total attenuation of the beam of x-rays as it travels in a straight line ... "Fast and flexible X-ray tomography using the ASTRA toolbox". Optics Express. 24 (22): 35-47. Bibcode:2016OExpr..2425129V. doi: ... but some of the terms and physical descriptions refer directly to the reconstruction of X-ray computed tomography. ...
In this situation, mobile X-ray equipment is used to obtain a lying down chest x-ray (known as a "supine film"). As a result, ... In a posteroanterior (PA) view, the x-ray source is positioned so that the x-ray beam enters through the posterior (back) ... In anteroposterior (AP) views, the positions of the x-ray source and detector are reversed: the x-ray beam enters through the ... "Chest X-ray quality - Projection". Radiology Masterclass. Retrieved 27 January 2016.. *^ Bush, A; Gray, H; Denison, DM ( ...
"Unlocking history through automated virtual unfolding of sealed documents imaged by X-ray microtomography". Nature ...
... as an alternative to diagnostic cardiac catheterization which involve risks including x-ray radiation exposure, 3) to obtain ...
X-ray microtomography. *Electron beam tomography. Targets. *Coronary *Calcium scan. *CT angiography ...
VC provides clearer, more detailed images than a conventional x-ray using a barium enema, sometimes called a lower ... that ultra-low dose VC can be just as effective in demonstrating bowel disease due to the great difference in x-ray absorption ... X-ray microtomography. *Electron beam tomography. Targets. *Coronary *Calcium scan. *CT angiography ...
X-ray microtomography. *Electron beam tomography. Targets. *Coronary *Calcium scan. *CT angiography ...
X-ray microtomography. *Electron beam tomography. Targets. *Coronary *Calcium scan. *CT angiography ...
The first X-ray microtomography system was conceived and built by Jim Elliott in the early 1980s. The first published X-ray ... Play media Play media X-ray microtomography, like tomography and X-ray computed tomography, uses X-rays to create cross- ... For X-ray microtomography, powerful open source software is available, such as the ASTRA toolbox. The ASTRA Toolbox is a MATLAB ... X-Ray+Microtomography at the US National Library of Medicine Medical Subject Headings (MeSH) Dame Carroll JR, Chandra A, Jones ...
This technology is known as X-ray micro-tomography to delineate the method as a form of X-ray microscopy that uses tomographic ... In order to overcome this difficulty X-ray micro-tomography is applied to extract the 3-D information that may be used for ... Application of X-Ray Microtomography to the Study of Polymer Composites 1999-01-5614. ... Citation: Pyrz, R., "Application of X-Ray Microtomography to the Study of Polymer Composites," SAE Technical Paper 1999-01-5614 ...
Characterization of cold spray titanium deposits by X-ray microscopy and microtomography.. Zahiri SH1, Mayo SC, Jahedi M. ... In this study, the unique capability of the X-ray microscopy and microtomography is utilized to visualize the internal ... Furthermore, microtomography images confirmed the experimental results for porosity measurements in which helium (compared with ...
X-ray microtomography has great potential for improving the understanding of the structural features of solid dosage forms and ... Principles of X-ray microtomography. The X-ray microtomography approach used in this work is an extension of the computer aided ... G.R. Davis and J.C. Elliott, High Definition X-ray Microtomography Using a Conventional Impact X-ray Source, J. de Physique ... 6. C.R. Appoloni et al., Characterization of Porous Microstructure by X-ray Microtomography, X-ray Spectrometry 31 (2), 124- ...
15 Moreno-Atanasio R, Williams RA, Jia X. Combining X-ray microtomography with computer simulation for analysis of granular and ... 3D characterization and analysis of particle shape using X-ray microtomography (XMT). Powder Technology. 2005;154(1):61-69. [ ... Ceramic foams porous microstructure characterization by X-ray microtomography. Materials Research. 2004;7(4):557-564. [ Links ... This sample was observed before and after the compression test by X-ray microtomography in order to follow the changes in the ...
The aim of our study is to obtain, as accurately as possible, porcine ocular tissue visualization using microtomography (micro- ...
X-Ray Fluorescence Microtomography Analysis of Breast Tissue Samples under Various Excitation Conditions G.R. Pereira, H.S. ... X-ray fluorescence, microtomography, breast tissue, synchrotron radiation. Abstract. The fluorescence mapping of iron, copper ... This work presents a development system to study fluorescence microtomography at the X-Ray Fluorescence Facility (D09B-XRF) at ... The elemental map of iron, copper and zinc were obtained by non-destructive X-Ray fluorescence microtomography. ...
Nondestructive Multiscale X-Ray Tomography by Combining Microtomography and High-Energy Phase-Contrast Nanotomography - Volume ... Nondestructive Multiscale X-Ray Tomography by Combining Microtomography and High-Energy Phase-Contrast Nanotomography ... Nondestructive Multiscale X-Ray Tomography by Combining Microtomography and High-Energy Phase-Contrast Nanotomography ... Nondestructive Multiscale X-Ray Tomography by Combining Microtomography and High-Energy Phase-Contrast Nanotomography ...
... ... Using X-ray tomography, we were able to visualise the formation of this microstructure in a barium borosilicate glass in three ... X-ray tomography comprises the reconstruction of 3D images of the absorption of a sample from several hundreds of projections. ... Fragmentation and limits to dynamical scaling in viscous coarsening: an interrupted in situ X-ray tomographic study, D. Bouttes ...
... Qu ... Recent progress in synchrotron X-ray microtomography technology has caused a revolution in imaging methods used to study the ... Propagation phase contrast X-ray Synchrotron microtomography (PPC-SRmCT) is used to study the polyodontode scales of the early ... 4. Three-dimensional virtual histology of silurian osteostracan scales revealed by synchrotron radiation microtomography. Open ...
... Publikation: Bidrag til tidsskrift › ... Invasive cancer causes a change in density in the affected tissue, which can be visualized by x-ray phase-contrast tomography. ... Imaging of Metastatic Lymph Nodes by X-ray Phase-contrast ... Forlagets udgivne version, 177 KB, PDF-dokument ... to investigate whether malignancy could be revealed by non-invasive x-ray phase-contrast tomography in lymph nodes from breast ...
X-ray Fluorescence. X-ray Diffraction. Single Crystal X-ray Diffraction. Small-Angle X-ray Scattering. Handheld XRF. LIBS. ... X-Ray Metrology for Silicon. X-Ray Metrology for Compound Semiconductor. X-Ray Defect Inspection. Superconductors and Metal ... How does micro-CT work? A micro-focus x-ray source illuminates the object and a planar x-ray detector collects magnified ... Microtomography. Micro-CT for material science. Micro-CT for life science. Micro-CT software. CBRNE Detection. CBRNet. IMS. GC- ...
... loaded in tension and imaged via in situ microtomography. The region of interest is analyzed via Digital Volume Correlation ( ... On the calibration of elastoplastic parameters at the microscale via X-ray microtomography and digital volume correlation for ... On the calibration of elastoplastic parameters at the microscale via X-ray microtomography and digital volume correlation for ... loaded in tension and imaged via in situ microtomography. The region of interest is analyzed via Digital Volume Correlation ( ...
Use an X-ray microtomography scanner to acquire the three-dimensional X-ray scans at the micron scale of the reservoir rock ... Scan the drilled mini-samples at a higher resolution (i.e., 5.5 µm/voxel) using an X-ray microtomography scanner to assess the ... NOTE: X-ray microtomography involves an ionizing radiation risk. Hence, an appropriate risk assessment is required to ensure a ... effective contact angle from X-ray micro tomography images of two-phase flow in porous media. Journal of colloid and interface ...
X-ray Fluorescence. X-ray Diffraction. Single Crystal X-ray Diffraction. Small-Angle X-ray Scattering. Handheld XRF. LIBS. ... X-Ray Metrology for Silicon. X-Ray Metrology for Compound Semiconductor. X-Ray Defect Inspection. Process Equipment. Photomask ... Microtomography. Micro-CT for Material Science. Micro-CT for Life Science. Micro-CT software. CBRNE Detection. CBRNet. IMS. GC- ... X-ray Metrology. EDS, WDS, EBSD, SEM Micro-XRF. Optical Emission Spectrometry. CS/ONH-Analysis. Magnetic Resonance. NMR. MR in ...
Synchrotron Powered Transmission X-ray Micro-tomography System in Shale Gas Micro-structural Characterisation Marek S Zbik1,2* ... 2016) Synchrotron Powered Transmission X-ray Micro-tomography System in Shale Gas Micro-structural Characterisation. Oil Gas ... Transmission X-ray Microscope; Shale gas; Shale rocks microstructure. Introduction. Rising the oil and gas price and limited ... Ray LF. Faculty of Science and Engineering. Queensland University of Technology, Brisbane, Australia. E-mail: [email protected] ...
X-ray micro-tomography for investigations of brain tissues on cellular level Author(s): Anna Khimchenko; Georg Schulz; Hans ... Developments in X-Ray Tomography X. Stuart R. Stock; Bert Müller; Ge Wang, Editor(s) ... X-ray imaging in absorption contrast mode is well established for hard tissue visualization. However, performance for lower ... SPIE 9967, Developments in X-Ray Tomography X, 996703 (4 October 2016); doi: 10.1117/12.2237554. Show Author Affiliations. Anna ...
The X-ray micro tomographic equipment, developed at Dept. of Physics, Building 307, has been extensively tested on extracted ... X-Ray Micro Tomography in Dental Research. *Thuesen, Gøsta (Project Manager). * Overview ...
Hard x-ray micro-tomography of a human head post-mortem as a gold standard to compare x-ray modalities Author(s): M. Dalstra; G ... Developments in X-Ray Tomography X. Stuart R. Stock; Bert Müller; Ge Wang, Editor(s) ... SPIE 9967, Developments in X-Ray Tomography X, 99670P (4 October 2016); doi: 10.1117/12.2237655. Show Author Affiliations. M. ...
ST Instruments offers x-ray micro CT instrumentation designed and produced by NeoScan. This company also provides its own all- ... X-ray micro CT (microtomography) uses the same technology as an ordinary CT (CAT) scan in a hospital. X-rays are used to ... X-ray micro CT (microtomography) has a resolution in the micrometer range, and can provide both high resolution and a large ... An X-ray micro CT gives you X-ray vision: it offers a non-destructive high resolution look inside your samples. It helps you to ...
The X-ray micro-tomography (μ-XRCT) measurements were utilized to create three-dimensional semi-transparent images of tektites ... X-ray Computed Microtomography for the Study of the Soil-Root Relationship in Grassland Soils Vadose Zone Journal ... Moldavite porosity: a 3-D X-ray micro-tomography study Ulrike Rantzsch Ulrike Rantzsch ... Ulrike Rantzsch, Alexandra Franz, Gert Kloess; Moldavite porosity: a 3-D X-ray micro-tomography study. European Journal of ...
Three phase interaction among gas, water and oil in three-dimensional porous media by X-ray micro-tomographyThree phase ... Three phase interaction among gas, water and oil in three-dimensional porous media by X-ray micro-tomography. ... water and oil in three-dimensional porous media by X-ray micro-tomography. ...
Davis JR, Lerdin A, Wells P, Ilic J (1991) X-ray microtomography of wood. J Inst Wood Sci 12:259-261Google Scholar ... Liu HQ, Wu XZ, Xiao TQ (2015a) Optimization of reconstructed quality of hard X-ray phase micro-tomography. Appl Opt 54:5610 ... Liu HQ, Wu XZ, Xiao TQ (2015b) Technical Note: Synchrotron-based high energy X-ray phase sensitive micro-tomography for ... Wu X, Liu H (2003) A general theoretical formalism for X-ray phase contrast imaging. J X-ray Sci Technol 11:33-42Google Scholar ...
Extraction of the 3D Local Orientation of Myocytes in Human Cardiac Tissue Using X-ray Phase-Contrast Micro-Tomography and ... Extraction of the 3D Local Orientation of Myocytes in Human Cardiac Tissue Using X-ray Phase-Contrast Micro-Tomography and ... Extraction of the 3D Local Orientation of Myocytes in Human Cardiac Tissue Using X-ray Phase-Contrast Micro-Tomography and ...
Results from magnetic resonance imaging (MRI) were compared with results from a novel application of X-ray microtomography (XμT ... Magnetic resonance imaging and X-ray microtomography studies of a gel-forming tablet formulation ... Magnetic resonance imaging and X-ray microtomography studies of a gel-forming tablet formulation. European Journal of ...
X-ray computed micro-tomography to study the porous structure and degradation processes of a building stone from Sabucina ( ... In this work we show the potential of X-ray micro-tomography in understanding the mechanism by which salts can damage building ... Simona Raneri, Veerle Cnudde, Tim DE Kock, Hannelore Derluyn, Germana Barone, Paolo Mazzoleni; X-ray computed micro-tomography ...
2018) is an interesting application of a relatively new technique, X-ray computed micro-tomography (MCT), for the determination ... Discussion on Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates: ... Discussion on Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates: ... Discussion on Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates: ...
Masschaele B, BAECHLER S, Cauwels P, JOLIE J, Mondelaers W, Dierick M. Neutron and monochromatic X-ray micro-tomography in ... Neutron and monochromatic X-ray micro-tomography in Application of Accelerators in Research and Industry (AIP Press, New York ... "Neutron and Monochromatic X-ray Micro-tomography in Application of Accelerators in Research and Industry (AIP Press, New York ... "Neutron and Monochromatic X-ray Micro-tomography in Application of Accelerators in Research and Industry (AIP Press, New York ...
... and X-ray diffraction techniques. However, this paper presents X-ray computed micro-tomography as a new laboratory method in ... Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates. M. Vavro, K. Souček, T ... Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates. M. Vavro, K. Souček, T ... Utilization of X-ray computed micro-tomography to evaluate iron sulphide distribution in roofing slates. M. Vavro, K. Souček, T ...
  • This technology is known as X-ray micro-tomography to delineate the method as a form of X-ray microscopy that uses tomographic reconstruction techniques to build three-dimensional images of micro-structure. (sae.org)
  • Characterization of cold spray titanium deposits by X-ray microscopy and microtomography. (nih.gov)
  • In this study, the unique capability of the X-ray microscopy and microtomography is utilized to visualize the internal structure of deposited material. (nih.gov)
  • Our research and development of 3D x-ray microscopy started in the early 1980s. (bruker.com)
  • Qualitative and quantitative analyses to determine iron sulphides in roofing slates are usually conducted using transmitted and reflected light microscopy, and X-ray diffraction techniques. (lyellcollection.org)
  • The results obtained by tomographic observations were subsequently verified by optical microscopy, X-ray powder diffraction and scanning electron microscopy, as well as energy-dispersive X-ray spectroscopy analyses. (lyellcollection.org)
  • merging X-ray phase microtomography, magnetic resonance microscopy and histology. (scicombinator.com)
  • We demonstrate that for human cerebellum grating-based X-ray phase tomography shows complementary contrast to magnetic resonance microscopy and histology. (scicombinator.com)
  • X-ray fluorescence microscopy and microspectroscopy use very fine high-quality beams, focused on extremely small areas within heterogeneous materials. (esrf.eu)
  • This book contains state-of-the-art reviews and up-to-date progress reports in the field of X-ray microscopy and spectromicroscopy, including related new X-ray optics and X-ray sources. (springer.com)
  • A new technique called synchrotron X-ray tomographic microscopy (SRXTM) allows for detailed three-dimensional scanning of fossils. (wikipedia.org)
  • Pyrz, R., "Application of X-Ray Microtomography to the Study of Polymer Composites," SAE Technical Paper 1999-01-5614, 1999, https://doi.org/10.4271/1999-01-5614 . (sae.org)
  • Results from magnetic resonance imaging (MRI) were compared with results from a novel application of X-ray microtomography (XμT) to track the movements of embedded glass microsphere tracers as the model tablets swelled. (hud.ac.uk)
  • Furthermore, microtomography images confirmed the experimental results for porosity measurements in which helium (compared with nitrogen) as carrier gas significantly decreases porosity in cold spray CP titanium. (nih.gov)
  • The compressive strength and the porosity of these samples was investigated before and after compression tests through X-ray microtomography. (scielo.br)
  • The X-ray micro-tomography (μ-XRCT) measurements were utilized to create three-dimensional semi-transparent images of tektites in order to receive information about their porosity. (geoscienceworld.org)
  • Five sets of functionalized calcium carbonate tablets with a target porosity of 45%-65% were prepared in 5% steps and characterized using terahertz time-domain spectroscopy and X-ray computed microtomography. (aalto.fi)
  • Our first explorations of the application of synchrotron x-ray microtomography (SRXTM) to paintings studies in collaboration with TOMCAT beamline at PSI Villigen have shown that this technique, combined with advanced image processing, allows the study of ground layer porosity at submicrometer scale. (sik-isea.ch)
  • The middle layer however shows low and non-connected porosity at the resolution level of the x-ray tomography images, so that few direct transport paths through the entire ground layer exist. (sik-isea.ch)
  • physics.nist.gov/PhysRefData/XrayMassCoef/tab3.html ), the greater the number of diffraction and scattering events, thereby weakening the X-ray beam that reaches the detector. (pharmtech.com)
  • Even if several other techniques allow a structural determination of surfaces, X-ray diffraction offers unique possibilities. (esrf.eu)
  • Surface X-ray diffraction is not limited to free surfaces under UHV conditions but it can be applied with success to study solid interfaces. (esrf.eu)
  • The ESRF also offers complementary techniques such as X-ray diffraction topography and phase-contrast imaging, which exploits the coherence of the beam. (esrf.eu)
  • Real-time monitoring of laser powder bed fusion process using high-speed X-ray imaging and diffraction. (nih.gov)
  • This work presents a development system to study fluorescence microtomography at the X-Ray Fluorescence Facility (D09B-XRF) at the Brazilian Synchrotron Light Laboratory (LNLS), Campinas, Brazil. (actapress.com)
  • The elemental map of iron, copper and zinc were obtained by non-destructive X-Ray fluorescence microtomography. (actapress.com)
  • A team from ESPCI, CNRS and Saint-Gobain studied the microstructure formation in a molten silicate glass during high-temperature heat treatment using X-ray microtomography at beamline ID19. (esrf.eu)
  • ID19 is a hard X-ray beamline mainly devoted to (in situ) microtomography and high-speed radiography, with an intensive use of X-ray phase contrast. (esrf.fr)
  • The hard X-ray beamline 8.3.2 at the Advanced Light Source enables imaging of samples at high temperatures and pressures, with mechanical loading and other realistic conditions using environmental test cells. (spiedigitallibrary.org)
  • These are designed for X-ray imaging experiments, especially computed tomography, at the medium-length beamline at the SPring-8 synchrotron radiation facility. (iucr.org)
  • However, the use of computerized microtomography (CMT) allows the analysis of samples in 3D without any damage to them, also, it has been widely used in the characterization of materials manufactured by powder metallurgy mainly, because of the good contrast obtained between the solid and porous phases 14 , 15 . (scielo.br)
  • In the context of materials science, X-ray phase-contrast imaging and tomography have particular value in the 2D and 3D characterization of low-density materials, the detection of cracks and voids and the analysis of composites and multiphase materials where the different components have similar X-ray attenuation coefficients. (mdpi.com)
  • Characterization of Zn-Substituted Carbonated Apatite Implanted in Rat Tibia by Synchrotron Radiation X-Ray Microtomography and 3D Image Analysis. (cambridge.org)
  • The objective of our visit to ELETTRA was to use synchrotron X-ray phase contrast micro tomography (PHC microCT) to visualize tissue bottlenecks for gas-phase diffusion in two wetland plant species showing contrasting tissue O 2 dynamics. (flooding.dk)
  • Additionally, we use X-ray synchrotron phase-contrast microtomography to visualize and study the anatomy of the tail and inner ear in these animals in comparison with closely related arboreal species ( Calumna tigris and Anolis carolinensis ), to better understand the morphological specializations associated with this unique mode of locomotion. (royalsocietypublishing.org)
  • Recent advances in high-resolution three-dimensional X-ray CT imaging have made it possible to visualize fluid configurations during multiphase displacement at the pore-scale. (imperial.ac.uk)
  • The cone-beam system is based on a 2D X-ray detector (camera) and an electronic X-ray source, creating projection images that later will be used to reconstruct the image cross-sections. (wikipedia.org)
  • The technology uses an X-ray cone beam, which will pass through the sample to a detector. (stinstruments.com)
  • Cone-beam X-ray microtomography attracts increasing attention due to its applications in biomedi- cal sciences, material engineering, and industrial nondestructive evaluation. (scribd.com)
  • In this article, we reformulate a generalized Feldkamp cone-beam image reconstruction algorithm, utilize curved voxels and mapping tables, improve the reconstruction efficiency by an order of magnitude relative to a direct implementation of the standard algorithm, and demonstrate the feasibility with numerical simulation and experiments using a prototype cone-beam X-ray microtomographic system. (scribd.com)
  • 1999). With an X-ray point source and a 2D- detector array, X-rays intersecting a spherical specimen form a cone, giving rise to the nomenclature cone-beam. (scribd.com)
  • 1988). We de- veloped a prototype cone-beam X-ray microtomographic system (Cheng et al. (scribd.com)
  • In very simple terms, X-ray microtomography can be thought of as creating a three-dimensional map of the relative atomic density of the sample under evaluation. (pharmtech.com)
  • The aim of our study is to obtain, as accurately as possible, porcine ocular tissue visualization using microtomography (micro-CT) method. (ovid.com)
  • X-ray imaging in absorption contrast mode is well established for hard tissue visualization. (spie.org)
  • Using the laboratory-based microtomography (μCT) system nanotom m (GE Sensing and Inspection Technologies GmbH, Wunstorf, Germany) and synchrotron radiation at the Diamond-Manchester Imaging Branchline I13-2 (Diamond Light Source, Didcot, UK), we have acquired 3D data with a resolution down to 0.45 μm for visualization of a human cerebellum specimen down to cellular level. (spie.org)
  • However, this paper presents X-ray computed micro-tomography as a new laboratory method in this field, which also allows for 3D visualization and analysis of iron sulphide distribution in roofing slates. (lyellcollection.org)
  • Synchrotron x-ray imaging visualization study of capillary-induced flow and critical heat flux on surfaces with engineered micropillars. (nih.gov)
  • 2018) is an interesting application of a relatively new technique, X-ray computed micro-tomography (MCT), for the determination of iron sulphides in roofing slates. (lyellcollection.org)
  • 2018) perform X-ray scans at the micron scale of the holotype specimen of Megachirella wachtleri. (wikipedia.org)
  • A phase-contrast X-ray microtomography system using the Talbot imaging has been built at the SPring-8 synchrotron radiation facility. (biologists.org)
  • X-ray microtomography is a nondestructive technique that has a high penetration ability and provides a reasonable level of resolution (~5-20 μm). (pharmtech.com)
  • High-resolution X-ray CT (Computed Tomography) is a completely nondestructive technique for visualizing features in the interior of opaque solid objects, and for obtaining digital information on their 3-D geometries and properties. (equisetites.de)
  • reported X-ray microscopic computed tomography (microCT) at 8 µm resolution. (biologists.org)
  • This protocol is presented to characterize the complex wetting conditions of an opaque porous medium (hydrocarbon reservoir rock) using three-dimensional images obtained by X-ray microtomography at subsurface conditions. (jove.com)
  • The X-ray nano-tomographic images were reconstructed using a proprietary filtered back projection algorithm from a set of 1601 projections, collected with the Zeiss Ultra 810 with 32nm voxel size using a 5.4keV energy quasi-monochromatic beam with an exposure time of 90s. (data.gov.uk)
  • High resolution X-ray microtomography images at 15 μm voxel-size were manually segmented. (frontiersin.org)
  • X-ray microtomography is a relatively new approach to imaging the internal structure of solid dosage forms. (pharmtech.com)
  • The X-ray microtomography approach used in this work is an extension of the computer aided tomography (CAT) medical imaging technique commonly used in hospitals. (pharmtech.com)
  • Recent progress in synchrotron X-ray microtomography technology has caused a revolution in imaging methods used to study the dermal skeletons of early vertebrates. (diva-portal.org)
  • We conclude that x-ray phase-contrast imaging can accurately detect density variations to obtain information regarding lymph node involvement previously inaccessible with standard absorption x-ray imaging. (ku.dk)
  • Micro computed tomography or 'micro-CT' is x-ray imaging in 3D, by the same method used in hospital CT (or 'CAT') scans, but on a small scale with massively increased resolution. (bruker.com)
  • The purpose of this work is to present a protocol to characterize the complex wetting conditions of hydrocarbon reservoir rock using pore-scale three-dimensional X-ray imaging at subsurface conditions. (jove.com)
  • Liu Y, Nelson J, Holzner C, Andrews JC, Pianetta P (2013) Recent advances in Synchrotron-based hard X-ray phase contrast imaging. (springer.com)
  • Phase-contrast X-ray CT is an emerging imaging technique that makes use of X-ray phase-shift in biological tissues ( Momose, 2005 ). (biologists.org)
  • Phase-contrast X-ray imaging makes use of phase shift of X-rays. (biologists.org)
  • High resolution synchrotron microtomography capable of revealing microvessels in three dimensional (3D) establishes distinct imaging markers of mouse kidney disease strongly associated to renal tubulointerstitial (TI) lesions and glomerulopathy. (nature.com)
  • see Fig. S1 , for example showing an X-ray image of a nanofabricated Au test pattern) with very fast imaging acquisition and processing. (nature.com)
  • Using three-dimensional synchrotron X-ray phase-contrast imaging, we demonstrate a set of unique specializations in the tail associated with the use of the tail during locomotion. (royalsocietypublishing.org)
  • X-ray scattering imaging can give access to microstructural information for features well below the setup resolution, in a large field of view, making this technique very interesting for the investigation of new materials. (psi.ch)
  • The objective of this study is to extend 2D omni-directional X-ray scattering imaging to 3D without need for a priori knowledge on the scatterer shape and/or space organization. (psi.ch)
  • In this work, X ray dark field imaging based on dual phase grating interferometry is used to access unresolvable structural information in such materials, which is otherwise inaccessible to conventional absorption-based full field imaging. (psi.ch)
  • Imaging modalities including magnetic resonance imaging and X-ray computed tomography are established methods in daily clinical diagnosis of human brain. (scicombinator.com)
  • In the Dental Institute that has developed into various imaging techniques for analysis of mineralised tissues, and the development of cutting edge microtomography systems for heritage science imaging. (qmul.ac.uk)
  • X-ray microtomography extends the capacities of X-ray imaging to produce pictures of ultra-high resolution and contrast. (esrf.eu)
  • X-ray phase-contrast imaging and tomography make use of the refraction of X-rays by the sample in image formation. (mdpi.com)
  • This provides considerable additional information in the image compared to conventional X-ray imaging methods, which rely solely on X-ray absorption by the sample. (mdpi.com)
  • In addition, a meshfree method is presented to quantify the strain evolution of the samples, based on the particle translations and particle rotations obtained from the X-ray imaging and particle-tracking techniques. (edu.hk)
  • Real time observation of binder jetting printing process using high-speed X-ray imaging. (nih.gov)
  • Keyhole threshold and morphology in laser melting revealed by ultrahigh-speed x-ray imaging. (nih.gov)
  • High-speed X-ray imaging of the Leidenfrost collapse. (nih.gov)
  • Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing process by high-speed x-ray imaging. (nih.gov)
  • Ultrafast X-ray imaging of laser-metal additive manufacturing processes. (nih.gov)
  • Data and videos for ultrafast synchrotron X-ray imaging studies of metal solidification under ultrasound. (nih.gov)
  • In situ observation of fracture processes in high-strength concretes and limestone using high-speed X-ray phase-contrast imaging. (nih.gov)
  • With the advent of high-resolution time-resolved three-dimensional X-ray imaging, all the terms in this expression can be measured directly. (imperial.ac.uk)
  • The Journal of X-Ray Science and Technology is an international journal designed for the diverse community (biomedical, industrial and academic) of users and developers of novel x-ray imaging techniques. (iospress.com)
  • Areas such as x-ray microlithography, x-ray astronomy and medical x-ray imaging as well as new technologies arising from fields traditionally considered unrelated to x rays (semiconductor processing, accelerator technology, ionizing and non-ionizing medical diagnostic and therapeutic modalities, etc.) present opportunities for research that can meet new challenges as they arise. (iospress.com)
  • A generally applicable calibration algorithm is developed for dual energy material decomposition in digital x-ray based imaging. (iospress.com)
  • X-ray imaging detectors with an identical phosphor and a CCD chip but employing lens- and fiber-coupling between them have been compared. (iucr.org)
  • This article presents a microscale modelling approach coupled with X-ray computed micro-tomography for the evaluation of material properties of polylactic acid (PLA) reinforced by birch pulp fibers under the effect of moisture. (vtt.fi)
  • Fragmentation and limits to dynamical scaling in viscous coarsening: an interrupted in situ X-ray tomographic study, D. Bouttes (a), E. Gouillart (b), E. Boller (c), D. Dalmas (b), D. Vandembroucq (a), Physical Review Letters , 112, 245701 (2014) . (esrf.eu)
  • Therefore, the purpose of this study was, in a blinded manner, to investigate whether malignancy could be revealed by non-invasive x-ray phase-contrast tomography in lymph nodes from breast cancer patients. (ku.dk)
  • It is applied to study a dog-bone sample, which is made of spheroidal graphite cast iron, loaded in tension and imaged via in situ microtomography. (archives-ouvertes.fr)
  • In present study the transmission x-ray microscope (TXM) method was validated in microstructural study of mudstone shale sample. (omicsonline.org)
  • X-Ray micro CT has been used to study the shale structure at meso scale and observe the evolution of 3D crack networks in samples of shale under uniaxial compression at different levels of load. (stinstruments.com)
  • An experimental study of synchrotron-based X-ray PPCT combined with the presented phase-attenuation-duality phase retrieval (PR) algorithm was implemented with the agalloch eaglewood specimens at different stages. (springer.com)
  • In this study we used soil 2D zymography and X-ray computed tomography (μCT) to assess the relationship between enzymes and pores. (msu.edu)
  • Small- and wide-angle X-ray scattering (SAXS and WAXS) use the high brilliance of an undulator source to study condensed matter samples in liquid or solid form. (esrf.eu)
  • Study of degradation processes in engineering materials using X-ray (micro)tomography and dedicated volumetric image processing and analysis. (lodz.pl)
  • A previous X-ray absorption study of tile adhesive mortars identified a new phenomenon during drying, namely the movement of small cement particles from the interior of the specimen to its surface. (nist.gov)
  • The goal of the present study was to observe this void instability and growth in real time by using three-dimensional X-ray microtomography. (nist.gov)
  • After study of some simple test cases, results from large scale simulations of fluid flow through digitized Fontainbleau sandstone, generated by x-ray microtomography, are presented. (nist.gov)
  • The fan-beam system is based on a one-dimensional (1D) X-ray detector and an electronic X-ray source, creating 2D cross-sections of the object. (wikipedia.org)
  • Figure 1: Schematic of X-ray microtomography instrument (I0 = incident beam, ItMay In the Field section5 = transmitted beam). (pharmtech.com)
  • A two-dimensional 'shadow' image is produced by accurately rastering the X-ray beam across the sample. (pharmtech.com)
  • The sample then is carefully moved (usually rotated) relative to the X-ray beam, and the process is repeated to produce additional two-dimensional images from various view points. (pharmtech.com)
  • 3D micro- and nano-tomography is possible by scanning the X-ray beam across a sample. (esrf.eu)
  • At BL20B2, an X-ray beam with a cross section of 300 mm (width) by up to 30 mm (height) is available. (iucr.org)
  • X-Ray chemical mapping of garnet shows a network of microchannels that propagate outward from polyphase inclusions. (frontiersin.org)
  • X-ray computed microtomography of sea ice - comment on "A review of air-ice chemical and physical interactions (AICI): liquids, quasi-liquids, and solids in snow" by Bartels-Rausch et al. (copernicus.org)
  • Approach to investigate both the chemical and physical properties with handheld Raman and X-ray CT, respectively, promise the accurate discrimination of the SFs, even if their visual appearance is similar with authentic products. (ajtmh.org)
  • X-ray micro-tomography datasets (raw and segmented images) of mixed-wet carbonate reservoir rock (contact angle, 104° ± 26°) at the end of waterflooding. (digitalrocksportal.org)
  • The ability to make precise X-ray attenuation measurements on very small volume elements is a developing technology. (sae.org)
  • An X-ray micro CT gives you X-ray vision: it offers a non-destructive high resolution look inside your samples. (stinstruments.com)
  • Liu HQ, Ren Y, Guo H, Xue Y, Xie H, Xiao TQ, Wu X (2012) Phase retrieval for hard X-ray computed tomography of samples with hybrid compositions. (springer.com)
  • Our results indicate that the combination approach of visual observation, handheld Raman and X-ray CT is a powerful strategy for nondestructive discrimination of suspect samples. (ajtmh.org)
  • Three-dimensional quantitative textural analysis of metamorphic rocks using high-resolution computed X-ray tomography: Part I. Methods and techniques. (equisetites.de)
  • Multiple X-ray computed tomographs (with quantitative mineral density calibration ) stacked to form a 3D model. (wikipedia.org)
  • Since a mouse fetus is mostly made of soft tissues, only poor contrast is obtained by absorption-based X-ray CT of a native fetus. (biologists.org)
  • Exploiting the higher sensitivity of X-ray phase contrast is particularly suited for biological soft tissues, for which ordinary X-ray absorption does not provide enough image contrast. (psi.ch)
  • In a closed system, X-ray shielding is put around the scanner so the operator can put the scanner on a desk or special table. (wikipedia.org)
  • Thus, as in X-ray CT, tomographic reconstruction is feasible from images obtained at different angles of the sample. (biologists.org)
  • In many cases, the production of these images is based on the mathematical procedure tomographic reconstruction , such as X-ray computed tomography technically being produced from multiple projectional radiographs . (wikipedia.org)
  • X-ray micro CT (microtomography) has a resolution in the micrometer range, and can provide both high resolution and a large field of view. (stinstruments.com)
  • Because the highest resolution of current X-ray microtomography is at micrometer scale, C-S-H and CH remains unsegmented. (edu.au)
  • In one setup, the X-ray source and detector are typically stationary during the scan while the sample/animal rotates. (wikipedia.org)
  • The second setup, much more like a clinical CT scanner, is gantry based where the animal/specimen is stationary in space while the X-ray tube and detector rotate around. (wikipedia.org)
  • The intensity of the X-rays reaching the detector is controlled by the sample path length and the X-ray attenuation coefficient of the material that it encounters on that path (4). (pharmtech.com)
  • A micro-focus x-ray source illuminates the object and a planar x-ray detector collects magnified projection images. (bruker.com)
  • The resolution of the image is determined by the size of the x-ray focal spot, number of projection views per rotation, the detector cell size, and the software algorithms used in image reconstruction. (stinstruments.com)
  • The x-ray tomographic images were acquired at a voxel-resolution of 3.9676 µm using a Zeiss Versa XRM-510 flat-panel detector at 70 kV, 6W, and 85 µA with an exposure time of 0.037s and 64 frames. (data.gov.uk)
  • It is common to construct an area X-ray detector with a scintillator, which converts X-rays to visible light, and a camera to observe the scintillation. (iucr.org)
  • The capabilities of the CCD such as its good linearity, fast readout and high sensitivity make it a competitive X-ray detector. (iucr.org)
  • The first published X-ray microtomographic images were reconstructed slices of a small tropical snail, with pixel size about 50 micrometers. (wikipedia.org)
  • Data processing steps: 1) Filtered x-ray tomography data. (sik-isea.ch)
  • Upscaling ice crystal growth dynamics in snow: rigorous modeling and comparison to 4D X-ray tomography data. (wsl.ch)
  • The X-ray micro tomographic equipment, developed at Dept. of Physics, Building 307, has been extensively tested on extracted human teeth and human fetus in cooperation with the School of Dentistry, Panum Institute. (dtu.dk)
  • The datasets contain 5 stitched X-ray micro-tomographic images (grey-scale, doped, difference, segmented porespace and segmented micro-porespace with porespace) and 3 X-ray nano-tomographic images of a region of microporous porespace in Estaillades Limestone. (data.gov.uk)
  • Near K-edge measurement of the X-ray attenuation coefficient of heavy elements using a tuneable X-ray source based on an electron LINAC. (ugent.be)
  • Of particular significance is the understanding of local coordination environments with the use of X-ray absorption spectroscopy. (elsevier.com)
  • In addition, perspectives on the impact of synchrotron based applications, particularly X-ray absorption spectroscopy, and the role of synchrotron applications in remediation, regulatory, and decision making processes are considered. (elsevier.com)
  • These pixel sizes have also resulted in the terms high-resolution X-ray tomography, micro-computed tomography (micro-CT or µCT), and similar terms. (wikipedia.org)
  • Digital detectors with small pixel pitches and micro-focus x-ray tubes are usually employed to yield in high resolution images. (wikipedia.org)
  • Cnudde V, Boone MN (2013) High-resolution X-ray computed tomography in geosciences: a review of the current technology and applications. (springer.com)
  • The Digital Morphology library is a dynamic archive of information on digital morphology and high-resolution X-ray computed tomography of biological specimens. (equisetites.de)
  • The high flux and brightness of the X-ray beams have allowed researchers to work at environmentally relevant concentrations. (elsevier.com)
  • A common method to achieve high spatial resolution is using X-ray tubes with a very small focus and magnification technique. (ndt.net)
  • X-ray CT visualized at least two different types of falsified tablets, one containing many cracks and voids and the other containing aggregates with high electron density, such as from the presence of the heavy elements. (ajtmh.org)
  • Synchrotron sources like the ALS provide high quality X-ray beams, with flux that is several orders of magnitude higher than lab-based sources. (spiedigitallibrary.org)
  • Reduction of Ring Artifacts in High Resolution X-Ray Microtomography Images. (indigo.ca)
  • This paper proposes a statistical multiscale homogenization method to extract effective elastic properties of cement paste on the basis of X-ray microtomography images. (edu.au)
  • He joined the Dental Institute in 2009 to work on designing and building a new microtomography scanner to image sealed parchment rolls and other heritage artefacts. (qmul.ac.uk)
  • Phase-contrast can also be used to image low-density materials, which do not absorb X-rays sufficiently to form a conventional X-ray image. (mdpi.com)
  • This has been done thanks to the unique use of X-ray tomography and the development of new image processing and analysis strategies. (lodz.pl)
  • Here we rebut the assertion that X-ray computed microtomography of sea ice fails to reveal liquid brine inclusions by discussing the phases present at the analysis temperature. (copernicus.org)
  • Because microtomography scanners offer isotropic, or near isotropic, resolution, display of images does not need to be restricted to the conventional axial images. (wikipedia.org)
  • One contrast enhanced MRA method, projection magnetic resonance digital subtraction angiograph (MRDSA), generates time-resolved angiograms in a manner similar to conventional digital x-ray digital subtraction angiography. (iospress.com)
  • X-Ray Microtomography Studies of Air-Void Instability and Growth During Drying of Tile Adhesive Mortars. (nist.gov)
  • This system has much higher density resolution than absorption-based X-ray microtomography. (biologists.org)
  • The resolution achieved by our microtomography is sufficient to resolve 1 µm test patterns with a 20x, NA = 0.4 lens. (nature.com)
  • All groups underwent in-vivo X-ray micro-computed tomography scanning at the left proximal tibia every month. (medsci.org)