Tomography

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Tomography refers to imaging by sections or sectioning, through the use of any kind of penetrating wave. A device used in tomography is called a tomograph, while the image produced is a tomogram. (Wikipedia.org)






Conferences related to Tomography

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2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI)

The IEEE International Symposium on Biomedical Imaging (ISBI) is the premier forum for the presentation of technological advances in theoretical and applied biomedical imaging.ISBI 2019 will be the 16th meeting in this series. The previous meetings have played a leading role in facilitating interaction between researchers in medical and biological imaging. The 2019 meeting will continue this tradition of fostering cross fertilization among different imaging communities and contributing to an integrative approach to biomedical imaging across all scales of observation.


2019 IEEE International Conference on Image Processing (ICIP)

The International Conference on Image Processing (ICIP), sponsored by the IEEE SignalProcessing Society, is the premier forum for the presentation of technological advances andresearch results in the fields of theoretical, experimental, and applied image and videoprocessing. ICIP 2019, the 26th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

This conference is the annual premier meeting on the use of instrumentation in the Nuclear and Medical fields. The meeting has a very long history of providing an exciting venue for scientists to present their latest advances, exchange ideas, renew existing collaboration and form new ones. The NSS portion of the conference is an ideal forum for scientists and engineers in the field of Nuclear Science, radiation instrumentation, software engineering and data acquisition. The MIC is one of the most informative venues on the state-of-the art use of physics, engineering, and mathematics in Nuclear Medicine and related imaging modalities, such as CT and increasingly so MRI, through the development of hybrid devices


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Periodicals related to Tomography

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Antennas and Wireless Propagation Letters, IEEE

IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Biomedical Engineering, IEEE Reviews in

The IEEE Reviews in Biomedical Engineering will review the state-of-the-art and trends in the emerging field of biomedical engineering. This includes scholarly works, ranging from historic and modern development in biomedical engineering to the life sciences and medicine enabled by technologies covered by the various IEEE societies.


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


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Most published Xplore authors for Tomography

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Xplore Articles related to Tomography

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A review of electro-magnetic tomography at UMIST

IEE Colloquium on Innovations in Instrumentation for Electrical Tomography, 1995

This paper describes the principle of operation of electromagnetic inductance tomography and a parallel field EMT system. Some recent research activities are also discussed.


Electrical impedance tomography/applied potential tomography-physiological imaging of the lungs

IEE Colloquium on Electrical Impedance Tomography/Applied Potential Tomography, 1992

The author discusses clinical applications of electrical impedance tomography using the Sheffield applied potential tomography system. The examples given are: diagnosis of ventilation deflects; monitoring intrathoracic fluid volumes; continuous monitoring of ventilation.<<ETX>>


Towards parallel, 192 channel, 40MS/s/ch data acquisition for optical tomography: A system for aero-engine exhaust emission diagnostics

2017 IEEE SENSORS, 2017

To investigate novel engine and fuel designs for greener aviation, instrumentation is required that can spatially and temporally resolve gas concentrations within aero-engine exhausts. This paper presents work towards a parallel, high-speed, distributed data acquisition (DAQ) system that employs in-situ demodulation of tunable diode laser absorption spectroscopy (TDLAS) signals. We briefly describe how this sits within a wider tomographic instrument, ...


Application of electrical impedance tomography to a plant scale mixing vessel

IEE Colloquium on Innovations in Instrumentation for Electrical Tomography, 1995

This paper describes the application of electrical impedance tomography (EIT) to a plant scale mixing vessel. A cylindrical mixing tank with a diameter of 7 ft (2.13 m) has been equipped with a single plane of sensing electrodes. These sensors connect to a low-cost PC based data acquisition system, which uses a dual-opposing drive signal arrangement. Initial imaging of static ...


Single step algorithms for image reconstruction. II. Generalisation of the Sheffield filtered back projection algorithm. (Electric impedance tomography)

IEE Colloquium on Electrical Impedance Tomography/Applied Potential Tomography, 1992

For pt.I see ibid. paper 4 (1992). The Sheffield system reconstructs images by a filtered back projection algorithm. To date the images have been produced from data originating from the adjacent drive configuration. However in principle the algorithm can be extended to reconstruct data originating from any bipolar drive configuration. Details of the various components of the image reconstruction process ...


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Educational Resources on Tomography

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IEEE-USA E-Books

  • A review of electro-magnetic tomography at UMIST

    This paper describes the principle of operation of electromagnetic inductance tomography and a parallel field EMT system. Some recent research activities are also discussed.

  • Electrical impedance tomography/applied potential tomography-physiological imaging of the lungs

    The author discusses clinical applications of electrical impedance tomography using the Sheffield applied potential tomography system. The examples given are: diagnosis of ventilation deflects; monitoring intrathoracic fluid volumes; continuous monitoring of ventilation.<<ETX>>

  • Towards parallel, 192 channel, 40MS/s/ch data acquisition for optical tomography: A system for aero-engine exhaust emission diagnostics

    To investigate novel engine and fuel designs for greener aviation, instrumentation is required that can spatially and temporally resolve gas concentrations within aero-engine exhausts. This paper presents work towards a parallel, high-speed, distributed data acquisition (DAQ) system that employs in-situ demodulation of tunable diode laser absorption spectroscopy (TDLAS) signals. We briefly describe how this sits within a wider tomographic instrument, the electrical system of this scalable design and preliminary characterization. Being remote from the end-user (approx. 60m) and deployed within an industrial environment, we have used a hierarchical, embedded strategy. This uses photodiode pre-amplification, filtering, digitization, signal demodulation, Ethernet packaging and microprocessor control implemented both on a multi-node, distributed basis and with the DAQ physically mounted on the same mechanical `ring' as the tomographic imaging array. Results show agreement with design but indicate that the first-generation interrupt-based direct-memory-access (DMA) between FPGA fabric memory and microprocessor memories is the predominant bottleneck.

  • Application of electrical impedance tomography to a plant scale mixing vessel

    This paper describes the application of electrical impedance tomography (EIT) to a plant scale mixing vessel. A cylindrical mixing tank with a diameter of 7 ft (2.13 m) has been equipped with a single plane of sensing electrodes. These sensors connect to a low-cost PC based data acquisition system, which uses a dual-opposing drive signal arrangement. Initial imaging of static discontinuities within the vessel are shown.

  • Single step algorithms for image reconstruction. II. Generalisation of the Sheffield filtered back projection algorithm. (Electric impedance tomography)

    For pt.I see ibid. paper 4 (1992). The Sheffield system reconstructs images by a filtered back projection algorithm. To date the images have been produced from data originating from the adjacent drive configuration. However in principle the algorithm can be extended to reconstruct data originating from any bipolar drive configuration. Details of the various components of the image reconstruction process are given. Particular attention is paid to those areas where modifications are required to allow the technique to be extended to any dipolar drive configuration.<<ETX>>

  • Initial results on magnetic induction tomography hardware measurement using hall effect sensor application

    Magnetic induction tomography (MIT) is among the new technology that compliment other tomography methods such as ultrasonic, optical, capacitance and several others. This type of tomography applies the magnetic field to detect the existence of the object that is going to image. Several methods are possible in constructing the magnetic induction hardware. Most of the researchers used coils for both transmitter and receiver which are more complicated and need large space. The Hall Effect sensors (HES) have the potential of replacing the coil at the receiver side since it has the ability to measure the value of magnetic field strength and convert it to voltage value. This concept is same as the ultrasonic sensors used in ultrasonic tomography instrumentation hardware. The results have shown that the pattern of capture data by hall effect sensor are almost the same pattern for all 8 sensors for each material used. This have given positive sign that HES is capable to be applied in MIT measurement system.

  • Discrete Imaging Models for Three-Dimensional Optoacoustic Tomography Using Radially Symmetric Expansion Functions

    Optoacoustic tomography (OAT), also known as photoacoustic tomography, is an emerging computed biomedical imaging modality that exploits optical contrast and ultrasonic detection principles. Iterative image reconstruction algorithms that are based on discrete imaging models are actively being developed for OAT due to their ability to improve image quality by incorporating accurate models of the imaging physics, instrument response, and measurement noise. In this work, we investigate the use of discrete imaging models based on Kaiser-Bessel window functions for iterative image reconstruction in OAT. A closed-form expression for the pressure produced by a Kaiser-Bessel function is calculated, which facilitates accurate computation of the system matrix. Computer-simulation and experimental studies are employed to demonstrate the potential advantages of Kaiser-Bessel function-based iterative image reconstruction in OAT.

  • Simulation on using cross-correlation technique for two-phase liquid/gas flow measurement for Ultrasonic Transmission Tomography

    Combining Ultrasonic Transmission Tomography (UTT) with the cross-correlation flow measurement technique can provide more information on the flow than usual. A simulated dual-plane UTT system for use on laboratory and plant-scale process equipment has been developed on the basis of this idea. This paper focuses on the correlator used to cross-correlate the tomogram images between the downstream and upstream plane of the simulated dual-plane ultrasonic transmission tomography system. This paper proposed the use of 2D correlation coefficient for the correlator and the result of its use is discussed. The principle of measurement of the local gas velocity distribution in a bubbly gas/liquid pipe flow which is based on cross-correlation of two plane images is also described. Initial experimental results illustrate the feasibility of the method presented here.

  • Improving gas component detection of an ultrasonic tomography system for monitoring liquid/gas flow

    The development of an ultrasonic transmission tomography system is described. The system is intended for the imaging of two component flows (such as gas/water) inside pipes of industrial processes. Transmission-mode approach has been used for sensing the gas/liquid two-phase flow, which is a kind of strongly inhomogeneous medium. A prototype fixture of vertical column and a mobile prototype design of sensor's jig for ultrasonic tomography imaging are used. The fixture of the vertical column is designed to hold the sensor's jig that will have the 16-pairs of ultrasonic sensors attached to it. The investigations were based on the transmission and the reception of ultrasonic sensors that were mounted circularly on the surface of experimental vessel. This paper also explains the hardware and circuitry design for the Ultrasonic Tomography System. Detailed explanations are presented on relationship of the smallest resolution the system are able to detect with the characteristics of the installed ultrasonic sensor.

  • MicroCT-guided Bioluminescence Tomography Based on the Adaptive Finite Element Tomographic Algorithm

    Molecular imaging is an emerging imaging technique in biological and medical field. Thereinto, bioluminescence tomography (BLT) plays a significant role. In view of the ill-posedness of the BLT problem, a priori knowledge is indispensable to reconstruct bioluminescent source uniquely and quantitatively. In this paper, the anatomical information of a real mouse is obtained with the microCT scanner to represent different macroscopic biological tissues. The proposed tomographic algorithm based on the adaptive finite element methods (FEMs) employs the microCT slices based coarse volumetric mesh to reconstruct source distribution quantitatively according to a posteriori error estimation techniques. In order to avoid the inverse crime, a Monte Carlo (MC) method based virtual optical environment, molecular optical simulation environment (MOSE), is also adopted for producing the measurement data. Finally, simulation results with the above framework demonstrate the effectiveness and potential of the proposed adaptive tomographic algorithm



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