• reconstruction
  • A computed tomography device comprising a subtraction unit which obtains differential data strings representing the difference between each time-serial projection data string of a group of projection data strings corresponding to a prospective reconstruction image generated by projection data strings. (google.ca)
  • They are concerned with reconstruction methods, and as such they are not restricted to any of the particular (experimental) tomography methods listed above. (wikipedia.org)
  • Thus, provided that the features can be resolved, ADF-STEM tomography can yield a reliable reconstruction of the underlying specimen which is extremely important for its application in material science. (wikipedia.org)
  • measurements
  • Tomography involves taking measurements around the periphery of an object (e.g. process vessel or patient) to determine what is going on inside. (wikipedia.org)
  • Quantum tomography or quantum state tomography is the process of reconstructing the quantum state (density matrix) for a source of quantum systems by measurements on the systems coming from the source. (wikipedia.org)
  • The general principle behind quantum state tomography is that by repeatedly performing many different measurements on quantum systems described by identical density matrices, frequency counts can be used to infer probabilities, and these probabilities are combined with Born's rule to determine a density matrix which fits the best with the observations. (wikipedia.org)
  • Unlike a measurement on a single system, which determines the system's current state after the measurement (in general, the act of making a measurement alters the quantum state), quantum tomography works to determine the state(s) prior to the measurements. (wikipedia.org)
  • Ocean acoustic tomography integrates temperature variations over large distances, that is, the measured travel times result from the accumulated effects of all the temperature variations along the acoustic path, hence measurements by the technique are inherently averaging. (wikipedia.org)
  • technique
  • August 28, 1919 Newark, Nottinghamshire, England August 12, 2004 Kingston upon Thames English electrical engineer who shared the 1979 Nobel Prize for Physiology or Medicine with Allan Cormack for his part in developing the diagnostic technique of computerized axial tomography (CAT), or computerized. (britannica.com)
  • Computed Tomography (CT) is a very useful technique for non-destructively examining the interior of museum objects in three dimensions. (fieldmuseum.org)
  • Seismic tomography is a technique for imaging the subsurface of the Earth with seismic waves produced by earthquakes or explosions. (wikipedia.org)
  • Muon tomography is a technique that uses cosmic ray muons to generate three-dimensional images of volumes using information contained in the Coulomb scattering of the muons. (wikipedia.org)
  • In 2003, the scientists at Los Alamos National Laboratory developed a new imaging technique: muon scattering tomography (MT). With muon scattering tomography, both incoming and outgoing trajectories for each particle are reconstructed. (wikipedia.org)
  • Electron tomography (ET) is a tomography technique for obtaining detailed 3D structures of sub-cellular macro-molecular objects. (wikipedia.org)
  • Ocean acoustic tomography is a technique used to measure temperatures and currents over large regions of the ocean. (wikipedia.org)
  • citation needed
  • citation needed] In fluorescence tomography, the fluorescence signal transmitted through the tissue is normalized by the excitation signal transmitted through the tissue, and so many of the fluorescence tomography systems do not require the use of time-resolved or frequency domain data, although research is still ongoing in this area. (wikipedia.org)
  • Journal
  • In a 1953 article in the medical journal Chest, B. Pollak of the Fort William Sanatorium described the use of planography, another term for tomography. (wikipedia.org)
  • Imaging
  • The BGS Geophysical Tomography (GTom) team provides leading-edge technology for non-invasive geoelectrical imaging of the shallow subsurface. (youtube.com)
  • X-ray computed tomography (CT) is an invaluable three-dimensional non-destructive imaging method with numerous applications in life and material science. (esrf.eu)
  • Tomography is imaging by sections or sectioning, through the use of any kind of penetrating wave. (wikipedia.org)
  • Terahertz tomography is a class of tomography where sectional imaging is done by terahertz radiation. (wikipedia.org)
  • In the field of biology, bright-field transmission electron microscopy (BF-TEM) and high-resolution TEM (HRTEM) are the primary imaging methods for tomography tilt series acquisition. (wikipedia.org)
  • different
  • Computed tomography requires taking a series of X-radiographs from different angles around an object and then mathematically reconstructing the volume which would have caused this series of projections to appear. (fieldmuseum.org)
  • The construction of third-generation synchrotron sources combined with the tremendous improvement of detector technology, data storage and processing capabilities since the 1990s has led to a boost of high-end synchrotron tomography in materials research with a wide range of different applications, e.g. the visualization and quantitative analysis of differently absorbing phases, microporosities, cracks, precipitates or grains in a specimen. (wikipedia.org)
  • In continuous tomography when a large number of projections is available, accurate reconstructions can be made by many different algorithms. (wikipedia.org)
  • An overview of electromagnetic inductance tomography: description of three different systems. (wikipedia.org)
  • quantum
  • In quantum process tomography on the other hand, known quantum states are used to probe a quantum process to find out how the process can be described. (wikipedia.org)
  • In the following text we will see that this probability density is needed to characterize the particle's quantum state, which is the whole point of quantum tomography. (wikipedia.org)
  • Quantum tomography is applied on a source of systems, to determine what the quantum state is of the output of that source. (wikipedia.org)
  • Not confident with Bob's description of the states, Alice may wish to do quantum tomography to classify the states herself. (wikipedia.org)
  • method
  • Another method of obtaining a tilt-series is the so-called conical tomography method, in which the sample is tilted, and then rotated a complete turn. (wikipedia.org)
  • approach
  • Furthermore, the approach can be combined with local tomography to obtain a detailed view of a region of interest within a large sample. (esrf.eu)
  • nuclear
  • Muon tomography imagers are under development for the purposes of detecting nuclear material in road transport vehicles and cargo containers for the purposes of non-proliferation. (wikipedia.org)
  • uses
  • Electron tomography is an extension of traditional transmission electron microscopy and uses a transmission electron microscope to collect the data. (wikipedia.org)
  • An oceanographic experiment employing tomography typically uses several source-receiver pairs in a moored array that measures an area of ocean. (wikipedia.org)
  • applications
  • Other example applications of network tomography include finding links which are shared by multiple paths (and can thus become potential bottlenecks in the future). (wikipedia.org)
  • Process tomography is an area of rapid growth both in terms of research and applications. (wikipedia.org)
  • Since the applications of fluorescent molecules in humans are fairly limited, most of the work in fluorescence tomography has been in the realm of pre-clinical cancer research. (wikipedia.org)
  • data
  • Network tomography is the study of a network's internal characteristics using information derived from end point data. (wikipedia.org)
  • Network tomography advocates that it is possible to map the path data takes through the Internet by examining information from "edge nodes," the computers in which the data are originated and from which they are requested. (wikipedia.org)
  • Data derived from network tomography studies can be used to increase quality of service by limiting link packet loss and increasing routing optimization. (wikipedia.org)
  • Hydraulic tomography (HT) is a sequential cross-hole hydraulic test followed by inversion of all the data to map the spatial distribution of aquifer hydraulic properties. (wikipedia.org)
  • Find
  • Loss tomography aims to find "lossy" links in a network by sending active "probes" from various vantage points in the network or the Internet. (wikipedia.org)
  • paths
  • Seismic tomography has to deal with the analysis of curved ray paths which are reflected and refracted within the earth and potential uncertainty in the location of the earthquake hypocenter. (wikipedia.org)
  • forms
  • Combining this information using many forms of tomography can help provide a holistic view of the system being looked at, and important for Computer simulations. (wikipedia.org)
  • area
  • There have been many published papers and tools in the area of network tomography, which aim to monitor the health of various links in a network in real-time. (wikipedia.org)
  • The area of delay tomography has also attracted attention in the recent past. (wikipedia.org)
  • The area of network tomography also includes that of inferring network topology using end-to-end probes. (wikipedia.org)
  • object
  • In tomography the 3D distribution of some physical quantity in the object is determined. (wikipedia.org)
  • In general, tomography deals with the problem of determining shape and dimensional information of an object from a set of projections. (wikipedia.org)
  • radiation
  • Because terahertz radiation can "see" what visible light and IR can not see, unique information can be obtained by terahertz tomography. (wikipedia.org)