Photoacoustic tomography PAT , or Photoacoustic computedtomography PACT , is a materials analysis technique based on the reconstruction of an internal photoacoustic source distribution from measurements acquired by scanning ultrasound detectors over a surface that encloses the source under study. Introduction The PA source is produced inside the object by the thermal expansion that results from a small temperature rise, which is caused by the absorption of externally applied radiation of pulsed electromagnetic EM waves. This technique has great potential for applications in the biomedical field because of the advantages of ultrasonic resolution in combination with EM absorption contrast. PAT is also called optoacoustic tomography OAT or thermoacoustic tomography TAT , with the term thermoacoustic emphasizing the thermal expansion mechanism in the PA generation. OAT refers particularly to light induced PAT, while TAT is used to refer to rf induced PAT. Technically, each temporal PA signal, measured at various detection positions, provides one dimensional radial information about the PA source relative to the detector position 2D surface scans offer other 2D lateral information about the PA source. Combining the temporal and spatial measurements affords sufficient information for a complete reconstruction of a 3D PA source. Because the PA signal received by each ultrasound detector is the integral of the ultrasound waves over the sensing aperture of the detector, the reconstruction algorithms depend on the detector apertures as well as the scanning geometries. Small aperture detectors are often used to approximate point detectors, which receive PA signals originating from spherical shells, centered at each point detector, with radii determined by the acoustic times of flight. The three geometries commonly used are planar, cylindrical, and spherical surfaces. Both Fourier ... www.opticsinfobase.org abstract.cfm?id 134699 Photoacoustic tomography using a Mach Zehnder interferometer ... more details
Quantum tomography or quantum state tomography is the process of reconstructing the quantum state density ... Quantum State Tomography. http research.physics.uiuc.edu QI Photonics Tomography what is tomography ... 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. Similarly, quantum measurement tomography ... tomography is that by repeatedly performing many different measurements on quantum systems described ... the particle s quantum state, which is the whole point of quantum tomography. File MarginalDistribution.PNG right Figure 3 Marginal Distribution What quantum state tomography is used for Quantum tomography is applied on a source of systems, to determine what the quantum state is of the output ... tomography works to determine the state s prior to the measurements. Quantum tomography can be used ..., ref G. Mauro D Ariano et al. Quantum tomography as a tool for the characterization of optical ... ref ref name LvovksyRaymer A.I.Lvovsky, M.G.Raymer. Continuous variable optical quantum state tomography ... s description of the states, Alice may wish to do quantum tomography to classify the states herself. Methods of quantum state tomography Linear inversion Using Born s rule , one can derive the simplest form of quantum tomography. If it is known in advance that the state is represented by a pure state ... and quantum homodyne tomography In infinite dimensional Hilbert spaces , e.g. in measurements ... is in the tomography of light , known as optical homodyne tomography . Using balanced homodyne ... is often used in tomography medical tomography . Example homodyne tomography. Field amplitudes ... selectivity. Balanced homodyne tomography is a reliable technique of reconstructing quantum state ... of light by a clever set up called the homodyne tomography detector. This is explained by the following ... signal used to trigger start the readout event of the homodyne tomography detector. The other photon ... more details
Orphan date February 2009 Unreferenced date February 2007 Terahertz tomography is a class of tomography where sectional imaging is done by terahertz radiation . Because terahertz radiation can see what visible light and IR can not see, unique information can be obtained by terahertz tomography. This is in a sense similar to X ray except without all the hazardous effects of X ray. Med stub Category Tomography ... more details
Geometric tomography is a mathematical field that focuses on problems of reconstructing homogeneous often convex objects from tomographic data this might be X rays, projections, sections, brightness functions, or covariograms . More precisely, according to R.J. Gardner who introduced the term , Geometric tomography deals with the retrieval of information about a geometric object from data concerning its projections shadows on planes or cross sections by planes. ref name ref1 Gardner, R.J., Geometric Tomography, Cambridge University Press, Cambridge, UK, 2nd ed., 2006 ref Theory A key theorem in this area states that any convex body in math E n math can be determined by parallel, coplanar X rays in a set of four directions whose slopes have a transcendental cross ratio . See also Tomography Discrete tomography References reflist External links http cgm.cs.mcgill.ca godfried research tomography.html Geometric tomography applet I http faculty.wwu.edu gardner GeometricTomography.html Geometric tomography applet II Category Tomography Category Projective geometry ... more details
Diffraction tomography is an Inverse scattering problem inverse scattering technique used to find the shape of a scattering object by illuminating it with probing waves and recording the reflections. It is based on the diffraction slice theorem and assumes that the scatterer is weak. It is closely related to X ray tomography . Category Scattering theory physics stub ... more details
10 minutes to the normal MRI protocol. See also Computedtomographyangiography Transcranial doppler Transcranial doppler sonography External links MeshName Magnetic Resonance Angiography 1 Scientific paper Non Contrast Enhanced Flow Independent Peripheral MR Angiography with Balanced SSFP , by Tolga ...Interventions infobox Name Magnetic resonance angiography Image Mra mip.jpg Caption Time of flight MRA showing the circle of Willis in the brain. Note the venetian blinds artifact visible as the multiple ... OPS301 3 808 , OPS301 3 828 OtherCodes Magnetic resonance angiography MRA is a group of techniques based on magnetic resonance imaging MRI to image blood vessels. Magnetic resonance angiography is used ..., unlike conventional or CT angiography do not display the lumen of the vessel, but rather the blood ... Angiography FDA One group of methods for MRA is based on blood flow. These methods are referred to as flow ..., e.g. when imaging a thin slice. Time of flight TOF or inflow angiography , uses a short echo time and flow ... gradient, math G bip math , is null math int G bip , dt 0 math 1 Flow Independent Angiography ... separate image acquisitions in all three directions must be computed to give the complete image of flow ... recently. Research Flow independent angiography FIA These methods are not based on flow, but exploit ... by fast spin echo sequences that can be synchronized with heart beats. 4D Dynamic MR Angiography ... catheter angiography images. If several such projections are combined into a cine loop or QuickTime ... successful than CT angiography or invasive catheter angiography. Most often, the underlying disease ... be diagnosed. An advantage of MRA compared to invasive catheter angiography is the non invasive character ... to CT angiography and catheter angiography, is that the patient is not exposed to any ionizing radiation . Also, contrast media used for MRI tend to be less toxic than those used for CT angiography and catheter angiography, with fewer people having any risk of allergy. Also far less is needed to be injected ... more details
Network tomography is the study of a computer network network s internal characteristics using information derived from end point data. The word tomography is used to link the field, in concept, to other processes that infer the internal characteristics of an object from external observation, as is done in magnetic resonance imaging or positron emission tomography even though the term tomography strictly refers to imaging by slicing . The field is a recent development in electrical engineering and computer science , founded in 1996. ref cite journal last Vardi first Y. title Network Tomography ... Statistical Association, Vol. 91, No. 433 jstor 2291416 ref Network tomography advocates that it is possible ... to develop more efficient computer networks. Data derived from network tomography studies can be used .... Recent developments There have been many published papers and tools in the area of network tomography ... into loss and delay tomography. A summary can be found in ref cite journal last Castro first R. title Network Tomography Recent Developments journal Stat. Science volume 19 pages 499 517 year 2004 ... Robert last5 Yu first5 Bin issue 3 ref and ref cite journal last Coates first M. title Internet tomography ... last2 Hero Iii first2 A.O. last3 Nowak first3 R. last4 Bin Yu issue 3 ref . Loss tomography Loss tomography aims to find lossy links in a network by sending active probes from various vantage points ... volume 2 pages 915 923 year 2001 ref . Delay tomography The area of delay tomography has also attracted ... Tomography journal IEEE Trans. Signal Processing volume 51 pages 2125 2136 year 2003 doi 10.1109 ... of network tomography also includes that of inferring network topology using end to end probes. Topology discovery is a tradeoff between accuracy vs overhead. In network tomography, the emphasis ... tomography include finding links which are shared by multiple paths and can thus become potential ... 3 ref . See also Network science Computer network References reflist DEFAULTSORT Network Tomography ... more details
Seismic tomography is a technique for imaging Earth s sub surface characteristics in an effort to understand deep geologic structure. Gathering ample compressional wave P wave and shear wave S wave travel time measurements allows us to compile 3D images of earth s velocity structure. ref cite book last Nolet first G. title Seismic Tomography year 1987 publisher Reidel Publishing Company pages 1 23 ref Theory Tomography is solved as an inverse problem. first measurements are made of seismic waves ... of Seismic Tomography url http www.landtech.org pdf pdf1.pdf publisher Landtech Enterprises SA accessdate ... dynamics and seismic tomography journal PNAS year 2000 volume 97 issue 23 pages 12409 12410 accessdate ... Earthscope Education and Outreach Seismic Tomography url http www.iris.edu hq files programs education ... 4 March 2012 ref Methods As stated above, seismic tomography is typically solved as an inverse problem . In order to estimate P wave velocity and further simplify seismic tomography, four main methods have been devised Refraction traveltime tomography Computationally simple but only reliable for making ... et al. title First arrival traveltime tomography when simpler is better journal EAGE, Vienna year 2011 ref Finite frequency traveltime tomography in an effort to obtain a higher resolution that the above ... frequency tomography journal Princeton University year 2007 pages 1 40 ref Reflection traveltime tomography Waveform tomography Uses seismic data to its fullest potential. Seismograms are the observed ... wave propagation Applications Seismologists can use tomography to infer geologic structures such as the subduction ... hot plume body. Volcanologists use tomography to understand the scale of magma chamber s beneath ... Tomography study Project EarthScope is currently installing 20 new seismometers every month ... in geology there exists many limitations and unanswered questions in seismic tomography. For example ... seismic tomography What we really can say and what we make up url http www.mantleplumes.org accessdate ... more details
Electron Tomography ET is a tomography technique for obtaining detailed three dimensional space 3D structures of cell biology subcellular macromolecule macromolecular objects. Electron tomography is an extension of traditional transmission electron microscopy and uses a transmission electron microscope to collect the data. In the process, a beam of electron s is passed through the sample at incremental degrees of rotation around the center of the target sample. This information is collected and used to assemble a three dimensional image of the target. Current resolutions of ET systems are in the 5 20 nanometer nm range, suitable for examining supra molecular multi protein structures, although ... . ADF STEM Tomography In the field of biology, bright field transmission electron microscopy ... imaging methods for tomography tilt series acquisition. However, there are two issues associated .... ref cite journal doi 10.1017 S143192760550117X title Annular Dark Field Tomography in TEM year ..., ADF STEM tomography can yield a reliable reconstruction of the underlying specimen which ... and EFTEM tomography year 2003 last1 Midgley first1 P journal Ultramicroscopy volume 96 pages 413 pmid 12871805 last2 Weyland first2 M issue 3 4 ref Some applications of ADF STEM tomography in material science and physics can be found in refs. ref cite journal doi 10.1038 nmat2406 title Electron tomography ... in copper interconnects using incoherent bright field tomography year 2006 last1 Ercius first1 Peter ... ref . So far, the best resolving power of a single axis ADF STEM tomography is 0.5 0.1 0.5 0.1 0.7 ... are the single axis and the dual axis tilting methods. Dual axis tomography is sometimes referred to as conical tomography as well. By using dual axis tilting, the elongation effect is reduced by a factor ... Positron emission tomography Transmission Electron Microscopy Three dimensional imaging Three dimensional ... article on electron tomography from http pubs3.acs.org acs journals toc.page?incoden ancham&indecade ... more details
File Discrete tomography.png thumb A discrete tomography reconstruction problem for two vertical and horizontal ... numbers. Discrete Tomography ref name ref4 Herman, G. T. and Kuba, A., Discrete Tomography Foundations ..., A., Advances in Discrete Tomography and Its Applications, Birkh user Boston, 2007 ref focuses on the problem ... number of their projection s. In general, tomography deals with the problem of determining shape and dimensional ..., the tomographic inversion problem may be continuous or discrete. In continuous tomography both the domain and the range of the function are continuous and line integrals are used. In discrete tomography ... is a finite set of real, usually nonnegative numbers. In continuous tomography when a large number ... for discrete tomography that only a few projections line sums are used. In this case, conventional techniques all fail. A special case of discrete tomography deals with the problem of the reconstruction of a binary image from a small number of projections. The name discrete tomography is due ... Tomography, September 19, 1994, Rutgers University . Theory Discrete tomography has strong ..., Discrete tomography determination of finite sets by X rays, Trans. Amer. Math. Soc. 349 1997 , no. 6, 2271 2295. ref ref name ref9 L. Hajdu, R. Tijdeman, Algebraic aspects of discrete tomography ... Tomography, SIAM Journal on Discrete Mathematics 20 1 , pp. 227 239, 2006 http www m9.ma.tum.de ... of Siegel grids and its application to the tomography of quasicrystals. European J. Combin. 29 2008 ... . ref In fact, a number of discrete tomography problems were first discussed as combinatorial problems .... ref name ref23 A. Alpers, P. Gritzmann, L. Thorens, Stability and Instability in Discrete Tomography ... for uniquely determined sets from two directions in discrete tomography, Discrete Mathematics 309 12 ... in the discrete tomography community. The problem is NP hard for math k geq 3 math , see. ref name .... J. Batenburg, and J. Sijbers, Generic iterative subset algorithms for discrete tomography , Discrete ... more details
orphan date December 2007 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. Specifically, HT involves installation of multiple Water well wells in an aquifer, which are partitioned into several intervals along the depth using packers. A sequential aquifer test at selected intervals is then conducted. During the test, water is injected or withdrawn i.e., a pressure excitation at a selected interval in a given well. Pressure responses of the subsurface are then monitored at other intervals at this well and other wells. This test produces a set of pressure excitation response data of the subsurface. Once a test is completed, the pump is moved to another interval and the test is repeated to collect another set of data. The same procedure is then applied to the intervals at other wells. Afterward, the data sets from all tests are processed by a mathematical model to estimate the spatial distribution of hydraulic properties of the aquifer. These pairs of pumping and drawdown data sets at different locations make an inverse problem better posed since each pair cross validates the others such that the estimates become less non unique. In other words, predictions of ground water flow based on the HT estimates will be more accurate and less uncertain than those based on estimates from traditional site characterization approaches and model calibration s. References http tian.hwr.arizona.edu yeh index.html http tian.hwr.arizona.edu research HT examples Category Hydrology ... more details
Intravenous digital subtraction angiography IV DSA is a form of angiography which was first developed in the late 1970s. IV DSA uses a computer technique which compares an x ray image of a region of the body before and after radiodensity radiopaque iodine based dye has been injected Intravenous therapy intravenously into the body. Tissues and blood vessels on the first image are digitally subtracted from the second image, leaving a clear picture of the artery which can then be studied independently and in isolation from the rest of the body. Some studies have indicated that IV DSA is not suitable for patients with Diabetes mellitus diabetes or Renal failure renal insufficiency because the dye load is significantly higher than is used in angiography arteriography . However, IV DSA has been used successfully to study the vessels of the brain and heart and has helped detect carotid artery obstruction and to map patterns of Cerebrum cerebral blood flow. It also helps detect and diagnose lesions in the carotid arteries which is a potential cause of stroke s. IV DSA has also been useful in assessing patients prior to surgery and after coronary artery bypass surgery and some organ transplant transplant operations. See also Digital subtraction angiographyAngiography Angioplasty Sources cite book author Anagnostakos, Nicholas Peter Tortora, Gerard J. title Principles of Anatomy and Physiology publisher Harper & Row location San Francisco year 1990 isbn 0 06 046694 4 cite journal author Eddy AC, Nance DR, Goldman MA, et al. title Rapid diagnosis of thoracic aortic transection using intravenous digital subtraction angiography journal Am. J. Surg. volume 159 issue 5 pages 500 3 year 1990 month May pmid 2334014 doi 10.1016 S0002 9610 05 81255 3 http www.akita noken.go.jp provide ekigaku ... RN title A comparison of angiography, intravenous digital subtraction angiography and duplex ultrasound ... Angiography Category Vascular procedures Category Projectional radiography Category Neuroimaging treatment ... more details
resolution. Medical imaging DEFAULTSORT Electron Beam Tomography Category Electron beam Category X ray computedtomography fa ru ...Distinguish Electron tomography Unreferenced date December 2009 Interventions infobox Name PAGENAME Image US patent 4672649 Fig 2.png Caption Patent illustration showing a cutaway view of an electron beam computerized tomography system. Components are 22. electron gun, 23. electron beam, 24. focus coil, 27. beam bending coil, 28 31. target rings, 14. detector array, 11. scan tube. The electron beam creates x rays at the target rings, which radiates through the patient to the detector on the opposite end of the scan tube. ICD10 ICD9unlinked MeshID D014057 OPS301 OPS301 3 26 OtherCodes Electron beam tomography EBT is a specific form of computedtomography CAT or CT in which the X ray tube is not mechanically spun in order to rotate the source of X ray photon s. This different design was explicitly developed to better image heart structures which never stop moving, performing a complete cycle of movement with each heart beat. As in conventional CT technology, the X ray source point moves along a circle in space around an object to be imaged. In EBT, however, the X ray tube itself is large and stationary, and partially surrounds the imaging circle. Rather than moving the tube itself, electron beam focal point and hence the X ray source point is swept electronically along a tungsten anode in the tube, tracing a large circular arc on its inner surface. This motion can be very fast. Design advantage Deleted image removed Image E Speed EBT.jpg framed left EBT Machine The principal application advantage of EBT tomographic CT machines, and the reason for the invention, is that because the X ray source point is swept electronically, not mechanically, it can be swept with far greater ... coronary artery angiography imaging is usually performed at 30 frames second or 0.033 seconds frame ... more details
Optical projection tomography is a form of tomography involving optical microscopy . ref cite journal doi 10.1126 science.1068206 pmid 11964482 volume 296 issue 5567 title Optical projection tomography as a tool for 3D microscopy and gene expression studies year 2002 month April journal Science pages 541 5 ref It is in many ways the optical equivalent of X Ray ComputedTomography or the medical CT scan. OPT differs in the way that it assumes parallel ray projection as opposed to fan beam projection as is the case for X ray CT. The technique has already contributed to a large number of studies aimed at addressing a broad range of biological questions in diverse systems such as human, mice, chicken, fly, zebrafish and plants. More recent adaptations have further enabled the use of the technique for studies of specimen on the adult mouse organ scale, individual cell nuclei and for longitudinal assessments of organ cultures. ref http ieeexplore.ieee.org xpl freeabs all.jsp?arnumber 5953523 IEEE Transactions on Medical Imaging ref References reflist External links http genex.hgu.mrc.ac.uk OPT Microscopy optwebsite frontpage index.htm http www.youtube.com watch?v LbbLWsbFLXY Video I Optical Projection Tomography of a mouse left lateral liver lobe. http www.youtube.com watch?v PCWI fX7Ss&feature related Video II Optical Projection Tomography of an embryonic stomach, intestine and pancreas of a mouse. Category Tomography ... more details
orphan date December 2007 Computed Corpuscle Sectioning is a general method for determining the volume, profile area, and perimeter of a slab section of any computer modeled three dimensional object in any orientation and at any position. It was originally developed as a model of cell nuclei in a tissue section in conjunction with the Reference Curve Method for correcting ploidy measurements by image analysis in a tissue section, but it is useful for evaluating any algorithm that corrects ploidy measurements for the effect of sectioning. Computed Corpuscle Sectioning has obvious pertinence to stereology , but has not been exploited in that field. The patents on this method U.S. Patent numbers 5,918,038, 6,035,258, and 6,603,869 are no longer in force. References Freed JA. Possibility of correcting image cytometric DNA ploidy measurements in tissue sections Insights from computed corpuscle sectioning and the reference curve method. Analyt Quant Cytol Histol 19 5 376 386, 1997. http www.aqch.com toc auto abstract.php?id 3135 Freed JA. Improved correction of quantitative nuclear DNA ploidy measurements in tissue sections. Analyt Quant Cytol Histol 21 2 103 112, 1999. http www.aqch.com toc auto abstract.php?id 11847 Freed JA. Conceptual comparison of two computer models of corpuscle sectioning and of two algorithms for correction of ploidy measurements in tissue sections. Analyt Quant Cytol Histol 22 1 17 25, 2000. http www.aqch.com toc auto abstract.php?id 14161 A general method for determining the volume and profile area of a sectioned corpuscle , U.S. Pat. No. 5,918,038 issued 6 29 99 to Jeffrey A. Freed. http www.google.com patents?q 5918038 Method for correction of quantitative DNA measurements in a tissue section , U.S. Pat. No. 6,035,258 issued 3 7 00 to Jeffrey A. Freed. http www.google.com patents?q 6035258 Use of perimeter measurements to improve ploidy measurements ... patents?q 6603869 External links http www.fortunecity.com skyscraper terabyte 562 jfccs.htm Computed ... more details
unreferenced date December 2007 For the Chamber de Commerce et d Industrie de Paris or CCIP, see Paris Chamber of Commerce For the Cisco CCIP certification, see Cisco Career Certifications Constantly Computed Impact Point CCIP is a function with a weapon s sighting system. It provides a depiction of the calculated point of impact, that works out from the launch platform s movement, the target s movement, gravity, projectile launch velocity, projectile drag, and other factors that can be entered, where a projectile will land and displays the information on the Heads Up Display HUD . The crosshairs will move around dependent on where the computer predicts the selected rocket, bullet or bomb will hit. Normally a radar lock is necessary, but when strafing or bombing a ground target A G mode A A mode will simply put the hairs in the centre of the HUD , the crosshairs will move along the ground. This system is normally used in aircraft or other large vehicles or large static weapons, but it may be possible that the system could be or has been condensed into something that can fit on the top of man portable firearm s too. This system is sometimes combined with an autorelease system so that an aircraft can lock a low drag bomb onto a target from a safe distance, and the bomb can then be released while the aircraft is in a high G climb when the target would no longer be visible over the aircraft s nose so that the aircraft does not need to overfly the target. Category Aircraft weapons Category Weapon guidance Category Targeting warfare mil stub nl Continuously computed impact point ... more details
Ultrasound transmission tomography is a form of tomography involving ultrasound . ref cite journal doi 10.1016 j.ultras.2006.06.016 pmid 17005227 volume 44 Suppl 1 title Multi parameter ultrasound transmission tomography of biological media year 2006 month December journal Ultrasonics pages e295 302 ref References reflist Category Tomography health stub ... more details
Tomography Methods, History and Applications, Institute of Physics, 2004. ISBN 0 7503 0952 0. ref ... D.C. last2 Brown first2 B.H. year 1984 title Applied Potential Tomography url journal J. Phys. E ... electrical resistivity tomography is used using electrodes on the surface of the earth or in bore ... in industrial process imaging ref M.S. Beck and R. Williams, Process Tomography Principles, Techniques ... fluids. In that context the technique is usually called electrical resistance tomography note the slight ... Berlin year 2006 publisher Springer chapter Electrical Impedance Tomography and its Perspectives ... implications for Electrical Impedance Tomography of fast neural activity journal NeuroImage ... Maltron International title The Maltron Sheffield MK 3.5, The Pioneer of Electrical Impedance Tomography ... ref See also Bioimpedance Electrical resistivity tomography Electrical capacitance tomography Respiratory ... College London http eidors3d.sourceforge.net EIDORS Electrical Impedance Tomography and Diffuse Optical Tomography Reconstruction Software at Sourceforge DEFAULTSORT Electrical Impedance Tomography Category ... more details
scanners, three dimensional imaging is often accomplished with the aid of a Computedtomography ... much like the reconstruction of computedtomography CT and single photon emission computedtomography SPECT data is more commonly used, although the data set collected in PET is much poorer ... captured by computedtomography CT scanners, and can be reconstructed in a similar way. However, the statistics of the data are much worse than those obtained through transmission tomography. A normal ... x ray computedtomography CT , magnetic resonance imaging MRI and functional magnetic resonance imaging fMRI , ultrasound and single photon emission computedtomography SPECT . While some imaging ... imaging with computedtomography CT and magnetic resonance imaging MRI , expansion of FDG ... positron emission tomographycomputedtomography 18 F DOPA PET CT for detecting pheochromocytoma. Eur J Nucl Med Mol Imaging. Oct 28 2009 ref Neuroimaging main Brain positron emission tomography ... computedtomography SPECT is unclear. Recently, a role has been suggested for FDG PET imaging of atherosclerosis ...Interventions infobox Name Positron Emission Tomography Image Caption ICD10 C?3 ICD9 ICD9proc 92.0 ICD9proc ... Image of a typical positron emission tomography PET facility File 16slicePETCT.jpg thumb 250px ... Positron emission tomography PET ref cite book title Positron Emission Tomography Basic Sciences last ... ?SGWID 0 102 24 0 0&searchType EASY CDA&queryText Positron Emission Tomography 3A Basic Sciences ... other types of molecules of interest. History The concept of emission and transmission tomography was introduced ... reconstruction tomography last Phelps first M.E. coauthors E.J. Hoffman, N.A. Mullani, M.M. ... I in tomographic mode as distinguished from the computed tomographic mode were reported in 1970. ref ... Tomography in Diagnostic Radiology and Nuclear Medicine, Ed. Ter Pogossian MM., University ... tumour response using 18F fluorodeoxyglucose and positron emission tomography review and 1999 EORTC ... more details
Cryo electron tomography cryo ET or electron cryotomography is a type of electron cryomicroscopy where tomography is used to obtain a 3D reconstruction of a sample from tilted 2D images at cryogenic temperatures. A cryoelectron tomography can be used to obtain structural details of complex cellular organizations at subnanometer resolutions. ref http pharmaxchange.info press 2011 01 cryoelectron microscopy Presentation on Cryoelectron Microscopy PharmaXChange.info ref Empty section date July 2010 References Reflist External links http www.jensenlab.caltech.edu projects.html techniques Explanation with multimedia http www.biotechniques.com multimedia archive 00003 BTN A 000112568 O 3257a.pdf Electron Cryotomography by Gavin E. Murphy and Grant J. Jensen http sitemaker.umich.edu macepid files li and jensen review tomography.pdf Electron cryotomography a new view into microbial ultrastructure by Zhuo Li and Grant J Jensen http www.sci.sdsu.edu TFrey MitoMovie.htm Example of tomography Category Cell biology biochem stub es Tomograf a crioelectr nica de Kryoelektronentomographie ... more details
Ultrasound modulated optical tomography UOT is a form of tomography involving ultrasound . ref cite journal pmid 17356603 volume 46 issue 10 title Ultrasound modulated optical tomography with intense acoustic bursts year 2007 month April journal Appl Opt pages 1615 23 ref It is used in medical imaging imaging of biological soft tissues and has potential applications for early cancer detection. ref name dissertation Sakad i , Sava. http repository.tamu.edu bitstream handle 1969.1 5875 etd tamu 2006A BMEN Sakadzic.pdf?sequence 1 Ultrasound modulated optical tomography in soft biological tissues. Ph. D. dissertation, Texas A&M University, 2006. ref Like optical techniques, this method provides high contrast vision contrast , and the use of ultrasound also provides high Optical resolution resolution . Development UOT was first proposed as a method for cancer detection in 1993. ref name brooksby F. A. Marks, H. W. Tomlinson, and G. W. Brooksby, A comprehensive approach to breast cancer detection using light Photon localization by ultrasound modulation and tissue characterization by spectral discrimination, Proc. SPIE 1888, 500 510 1993 ref References reflist Category Tomography Category Optical imaging Category Medical ultrasound health stub optics stub ... more details
No footnotes date January 2008 Magnetic induction tomography is an imaging science imaging technique used to image Electromagnetism electromagnetic properties of an object by using the eddy current effect. It is also called electromagnetic induction tomography , electromagnetic tomography EMT , eddy current tomography , and eddy current testing . Applications The method is used in nondestructive testing and geophysics , and has potential applications in medicine . It is also used to generate 3D images of passive electromagnetic properties, which has applications in brain imaging , cryosurgery monitoring in medical imaging, and metal flow visualization in metalworking processes. References cite book author Telford, W M, Geldart, L P, Sheri, R E, and Keys, D A title Applied Geophysics publisher Cambridge University Press Cambridge, England year 1976 pages Section 3.5.4 nopp true cite journal author Griffiths H title Magnetic induction tomography journal Meas. Sci. Technol. volume 12 issue 8 pages 1126 1131 year 2001 doi 10.1088 0957 0233 12 8 319 cite journal author Korjenevsky A, Cherepenin V, and Sapetsky S title Magnetic induction tomography experimental realization journal Physiol. Meas. volume 21 issue 1 pages 89 94 year 2000 doi 10.1088 0967 3334 21 1 311 pmid 10720003 cite journal author Scharfetter H, Lackner H K, Rosell J title Magnetic induction tomography Hardware for multi frequency measurements in biological tissues journal Physiol Meas. volume 22 pages 131 146 year 2001 doi 10.1088 0967 3334 22 1 317 pmid 11236874 issue 1 cite journal author Binns R, Lyons, A R A, Peyton, A J, and Pritchard, W D N title Imaging molten steel flow profiles journal Meas. Sci. Technol. volume 12 pages 1132 1138 year 2001 doi 10.1088 0957 0233 12 8 320 issue 8 cite journal author Soleimani, M, Lionheart, W R B title Absolute Conductivity Reconstruction in Magnetic Induction Tomography Using a Nonlinear Method journal IEEE Trans Medical Imaging volume 25 issue 12 pages 1521 1530 ... more details
Electrical capacitance tomography ECT is a method for determination of the dielectric permittivity distribution in the interior of an object from external capacitance measurements. It is a close relative of electrical impedance tomography ref M Soleimani, W R B Lionheart, Nonlinear image reconstruction in electrical capacitance tomography using experimental data, Meas. Sci. Technol., 16, 2005, pp 1987 1996 ref and is proposed as a method for industrial process monitoring, although it has yet to see widespread use. Potential applications include the measurement of flow of fluids in pipes ref Jaworski AJ and Dyakowski T, Application of electrical capacitance tomography for measurement of gas solid flow characteristics in a pneumatic conveying system, Measurement Science and Technology, 12, 2001, pp 1109 19 ref and measurement of the concentration of one fluid in another, or the distribution of a solid in a fluid. Although capacitance sensing methods were in widespread use the idea of using capacitance measuremnet to form images is attributed to Maurice Beck and co workers at UMIST in the 1980s ref S M Huang, A Plaskowski, C G Xie and M S Beck, Capacitance based tomographic flow imaging system, Electronics Letters, 24 7 , 1988, pp 418 19. ref . Although usually called tomography , the technique differs from conventional tomographic methods, in which high resolution images are formed of slices of a material. The measurement electrodes, which are metallic plates, must be sufficiently large to give a measureable change in capacitance. This means that very few electrodes are used and eight or twelve electrodes is common. An N electrode system can only provide N N&minus 1 2 independent measurements. This means that the technique is limited to producing very low resolution images of approximate slices. However, ECT is fast, and relatively inexpensive. References references Category Electrical engineering Category Nondestructive testing nl Elektrische capaciteitstomografie pt ... more details
The Coherent Electromagnetic Radio Tomography CERTO is a radio beacon which measures ionospheric parameters in coordination with ground receivers. CERTO provides global ionospheric maps to aid prediction of radio wave scattering. CERTO was developed by the Naval Research Lab and is one of the 4 experiment packages on PicoSAT satellite. CERTO has near real time measurements of the ionosphere. ref http adsabs.harvard.edu abs 2004AGUSMSA51A..07B Harvard University CERTO Ionosphere Sensing ref Specifications NSSDC ID 2001 043B 01A Mission PicoSAT PicoSAT 9 PicoSAT 9 References Include NASA http nssdc.gsfc.nasa.gov nmc experimentDisplay.do?id 2001 043B 01 NASA Picosat Experiment 2001 43B http www.kirtland.af.mil shared media document AFD 080721 027.pdf Kirtland AFB CERTO reflist Category Earth stations in England Category Satellites Category Artificial satellites orbiting Earth spacecraft stub ... more details
Interventions infobox Name Optical coherence tomography Image Nibib 030207 105309 sarcoma.jpg Caption Optical Coherence Tomography OCT image of a sarcoma ICD10 ICD9 MeshID D041623 OPS301 OPS301 3 300 OtherCodes Optical coherence tomography OCT is an optical signal acquisition and processing method. It captures ... media e.g., biological tissue . Optical coherence tomography is an interferometry interferometric ... have been employed , optical coherence tomography has achieved sub micrometer resolution with very wide spectrum sources emitting over a 100 nm wavelength range . Optical coherence tomography is one of a class of optical tomography optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency domain optical coherence tomography, provides advantages ... coherence tomography systems are employed in diverse applications, including art conservation and diagnostic ... M. Rollins, PhD, Daniel I. Simon, MD . Intracoronary Optical Coherence Tomography A Comprehensive Review ... thumb 300px Optical coherence tomography tomogram of a fingertip. Starting from ..., Naohiro Tanno Backscattering Optical Heterodyne Tomography , prepared for the 14th Laser Sensing ... first7 MR last8 Flotte first8 T last9 Gregory first9 K title Optical coherence tomography. volume ... ref optical coherence tomography OCT with micrometer resolution and cross sectional imaging capabilities ... Oldenburg first3 AL last4 Marks first4 DL last5 Boppart first5 SA title Optical coherence tomography .... Drexler, G. Kamp, and H. Sattmann, In Vivo Optical Coherence Tomography, Am. J. Ophthalmol., vol. 116 ... by optical coherence tomography pmid 19829430 year 1993 last1 Swanson first1 E. A. last2 Izatt ... resolution ophthalmic optical coherence tomography journal Nature Medicine volume 7 issue 4 pages ... Tomography, or OCT , is a technique for obtaining sub surface images of translucent or opaque materials ... imaging . Other medical imaging techniques such as computerized axial tomography, magnetic resonance ... more details
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