tomography Articles

  • Virtual 3D reconstruction, diagnosis and surgical planning with Mimics software

    CT scans interpretation is no longer strictly related to the machine. They can be analysed with specialised software that allows for diagnosis, surgical and dental procedures planning. So, medical doctors can analyse and determine the step–by–step procedure in the actual phase with a computer. There are presented some real examples computed with Mimics software. Keywords: CT scans, 3D ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project Phase I in Assam, India - Case Study

    Passive Seismic Tomography Project Phase I Project Area: approximately 2000km2 Seismic Network: 36 stations Recording Period: 3 months Number of Seismic Events located/used: 116/108 The scope of this project was to provide coarse, but reliable 3D P-wave velocity and Vp/Vs models, adequate for a reconnaissance stage mapping of the study ...


    By SeismoTech Ltd

  • Recognition of karst structure using refraction tomography

    The results of location of karst wells and probable hydraulic connections between them in limestone massif using the refraction tomography are presented. Seismic modeling was based on refraction horizon recognition in the first stage and tomographic processing of P-wave and S-wave velocity changes in the second one. The studies were carried out on the terrain neighboring to the wall of abandoned ...


    By GEOSPECTRUM S.C.

  • The development of an anthropomorphic and anthropometric thorax female phantom for experimental radiodosimentry

    Anthropomorphic-anthropometrical phantoms are simulator objects for measuring absorbed dose in conditions equivalent to those found in the exposure of the internal organs to charged particles, photons or neutrons generated by external beams or to internal intake of radioisotopes. This paper addresses the construction of an anatomical simulator that retains the anthropomorphic and anthropometrical ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project in Papua, Indonesia - Case Study

    Passive Seismic Tomography Project Project Area: approximately 1000km2 (4700km2 with the peripheral stations) Seismic Network: 80 stations Recording Period: 5 months The scope of this project was the successful completion of a full Passive Seismic Tomography survey in Asmat – Papua, Indonesia, for subsurface mapping purposes and detection ...


    By SeismoTech Ltd

  • Low-dose radiation risk and the linear no-threshold model

    The Linear No-Threshold (LNT) model has been traditionally used in the field of radiation safety. Public attention to and debate on this model increased after estimates that current Computed Tomography (CT) procedures in the USA will ultimately be responsible for up to 2% of cancers. However, there is evidence that in the mGy range, low doses not only cause a relatively low probability of ...


    By Inderscience Publishers

  • Single-particle analysis and electron tomography

    Both single-particle analysis and electron tomography are special tools for the structural analysis of biological components by transmission electron microscopy. Single-particle analysis enables us to determine the structures of relatively large proteins and macromolecular complexes without crystallisation. Electron tomography is often used to visualise organelles and subcellular structures at ...


    By Inderscience Publishers

  • Three–dimensional seismic tomography with tetrahedra element on isoparametric mapping

    The author has developed a method of three–dimensional seismic tomography on concrete structures. This method is based on ray–trace and identification technique, and the distribution of slowness or energy dissipation is identified based on simultaneously iterative reconstruction technique (SIRT) or the other kind of statistical identification technique. This kind of technique was originally ...


    By Inderscience Publishers

  • Passive Seismic Tomography Project Phase II in Delvina, Albania - Case Study

    Passive Seismic Tomography Project Phase II Project Area: approximately 400km2 Seismic Network: 70 stations Recording Period: 11 months Number of Seismic Events located/used: 1200/1100 The scope of this project, which followed a successful Phase I Passive Seismic Tomography survey, was to provide accurate and reliable 3D P-wave velocity and ...


    By SeismoTech Ltd

  • Passive Seismic Tomography Feasibility Study in Aguacate, Mexico - Case Study

    Passive Seismic Tomography Feasibility Study Project Area: Approximately 2km2 Seismic Network: 5 stations Recording period: 12 days Seismotech’s personnel installed five seismic stations at the Aguacate hydrocarbon production area in Mexico, aiming to record the seismicity and evaluate the potential microseismic activity on this specific area. ...


    By SeismoTech Ltd

  • Passive Seismic Tomography Project Phase II in Assam, India - Case Study

    Passive Seismic Tomography Project Phase II Project Area: approximately 2000km2 Seismic Network: 76 stations Recording Period: 9 months Number of Seismic Events located/used: 276/263 The scope of this project, which followed a successful Phase I Passive Seismic Tomography survey in the same area, was to provide accurate and reliable 3D P-wave ...


    By SeismoTech Ltd

  • Small scale mechanical properties of polycrystalline materials: in situ diffraction studies

    The recent developments in the fields of processing, mechanical characterisation as well as simulation allow for a deeper study of the relationships between the microstructure and the mechanical properties of nanostructured materials (thin films and bulk nano materials). The understanding of size effect on the elastic and plastic deformation mechanisms is of both fundamental and practical ...


    By Inderscience Publishers

  • Integration & Joint Interpretation of Passive Seismic Tomography, Gravity and MT Data - Case Study

    Integration & Joint Interpretation of Passive Seismic Tomography, Gravity and MT Data The scope of this project was an integrated interpretation of the Passive Seismic Tomography, Gravity and Magnetotelluric data, acquired in the Delvina Gas field area in the context of the according geophysical surveys. Although the Delvina Gas field has a marginal production, the only ...


    By SeismoTech Ltd

  • Case Study - Historic Cemetery - Texas

    Archaeological grave site locating Objective:  Locate potential unmarked graves Site:  Historic family cemetery in San Antonio, Texas USA dating to 1899 Instrument:  SuperSting R8/IP, Switch Box112 and 112 electrodes installed in a 7x6 foot 3D dipole-dipole grid Software:  EarthImager 3D Result:  3D resistivity ...


    By Advanced Geosciences, Inc.

  • Vision-based 3D surface motion capture for the DIET breast cancer screening system

    Breast cancer is one of the most prevalent forms of cancer in the world today. The search for effective treatment and screening methods is a highly active area of research. The Digital Image-based Elasto-Tomography (DIET) project is a new breast cancer screening system under development, where surface motion from the mechanically actuated breast is measured in 3D, and used as input to an inverse ...


    By Inderscience Publishers

  • MT & Gravity Survey in Delvina, Albania - Case Study

    MT & Gravity Survey In November 2012, SeismoTech s.ltd. was awarded a Gravity and Magnetotelluric survey in the Delvina Area (SW Albania), by Stream Oil & Gas Ltd. The scope of this project was to enrich with additional geophysical information the Delvina Gas field area, in order to conclude on optimum locations for well-drilling. The Delvina Gravity and ...


    By SeismoTech Ltd

  • Electrical Method

    Vertical Electrical Soundings - Designed and performed vertical electrical soundings (VES) for proposed landfilling sites, utilizing an electrical resistivity system to determine depth to the water table. ADEQ project. Electrical Resistance Tomography - Participated in the Leak Detection Monitoring and Mitigation (LDMM) Project that utilized Electrical Resistance Tomography (ERT) developed by ...


    By ECA Geophysics

  • Atomic resolution analyses of nano-structured materials by atom probe tomography

    The three dimensional atom probe (3DAP) is a well established and widely used nanoanalysis tool in materials science (mainly metallic materials). Due to its ability to map out in 3D the distribution of atoms in the real space on a nearly atomic scale, it has been extensively applied for the investigation of a large variety of materials, allowing a better understanding of physical phenomena ...


    By Inderscience Publishers

  • Simulation of particle capture in a microfiltration membrane

    The present study takes an interest in the description of the fouling mechanisms by a numerical approach at the microscopic scale. At first, an X-ray tomography has enabled the modelling of the membrane structure for the numerical simulations. Next, for different particle size, a same volume of particles has been sent in the modelled membrane and the final permeability has been computed. Thus, ...


    By IWA Publishing

  • Geotechnical Tomography: The Effects of Diffraction

    Tomographic imaging is the inversion of a field parameter using boundary observations. Current techniques make different simplifying hypotheses. In geotechnical tomography the straight ray assumption is most common. Problems arise when the wavelength is of the same order of magnitude as the size of the inclusion. In this case, the physics of diffraction creates significant effects behind the ...


    By ASTM International

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