Conferences related to X-ray tomography

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2023 Annual International Conference of the IEEE Engineering in Medicine & Biology Conference (EMBC)

The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.


2020 59th IEEE Conference on Decision and Control (CDC)

The CDC is the premier conference dedicated to the advancement of the theory and practice of systems and control. The CDC annually brings together an international community of researchers and practitioners in the field of automatic control to discuss new research results, perspectives on future developments, and innovative applications relevant to decision making, automatic control, and related areas.


2020 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 2020, the 27th in the series that has been held annually since 1994, bringstogether leading engineers and scientists in image and video processing from around the world.


2020 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)

All areas of ionizing radiation detection - detectors, signal processing, analysis of results, PET development, PET results, medical imaging using ionizing radiation


IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society

IECON is focusing on industrial and manufacturing theory and applications of electronics, controls, communications, instrumentation and computational intelligence.


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Periodicals related to X-ray tomography

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Aerospace and Electronic Systems Magazine, IEEE

The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.


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 Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


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.


Computer Graphics and Applications, IEEE

IEEE Computer Graphics and Applications (CG&A) bridges the theory and practice of computer graphics. From specific algorithms to full system implementations, CG&A offers a strong combination of peer-reviewed feature articles and refereed departments, including news and product announcements. Special Applications sidebars relate research stories to commercial development. Cover stories focus on creative applications of the technology by an artist or ...


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Most published Xplore authors for X-ray tomography

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Xplore Articles related to X-ray tomography

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Data weighted vs. non-data weighted dual energy reconstructions for X-ray tomography

1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255), 1998

X-ray transmission tomography is useful for estimation of attenuation correction for simultaneously obtained emission tomography images. Moreover, X-ray attenuation coefficients can be combined with emission measurements in order to create combined anatomical-functional images. It is imperative, then, that as low X-ray dosage as possible be used. At those fluxes implementation of iterative algorithms becomes desirable. However, that was not the ...


Cone-Beam X-Ray Tomography with Arbitrary-Orientation X-ray Tube

2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006

X-ray computed tomography is a technique to reconstruct an image of trans- axial slab of the object from a series of X-ray radiographs taken at a prior- known angle. Sequences of X-ray radiographs are served as two-dimensional projection data for a 3D tomography. The most popular Feldkamp algorithm which is based on filtered backprojection (FBP) approaches has shown to perform ...


A CMOS IC for X-ray computed tomography

Proceedings of the 24th European Solid-State Circuits Conference, 1998

In x-ray tomography CdTe detectors can be used to convert photons into impulses of charge. A fully integrated charge-sensitive system is implemented in this work, that convert a few femptocoulombs of charge to voltage pulses of around 100-500 mV, while preserving the sharpness of the impulses. On-chip comparator and delay logic convert this analog output into a digital pulse train ...


X-ray tomography on IR-T1 tokamak

IEEE Conference Record - Abstracts. 1996 IEEE International Conference on Plasma Science, 1996

Summary form only given, as follows. Measurements of soft X-ray emission from the IR-T1 tokamak plasma have been analysed with tomographic reconstruction methods. IR-T1 is a small air core transformer tokamak with circular cross- section and without copper shell and divertor (R=45 cm, a=12.5 cm, Bt<1 T, Ip=20-40, Ne=(0.7-2.5)/spl times/10/sup 1/3 cm/sup -/3, Te=150-200 eV). The detector system is on ...


Application of CdTe and CZT detectors in ultra fast electron beam X-ray tomography

2008 IEEE Nuclear Science Symposium Conference Record, 2008

Ultra fast electron beam tomography has been developed as a novel tool for visualization of fast processes. As in medical electron beam computed tomography (CT) this technique is based on the generation of images from radiographs produced with a rapidly scanned electron beam. Scanning frequencies of few thousand frames per second require X-ray detectors which can be read out at ...


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Educational Resources on X-ray tomography

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IEEE-USA E-Books

  • Data weighted vs. non-data weighted dual energy reconstructions for X-ray tomography

    X-ray transmission tomography is useful for estimation of attenuation correction for simultaneously obtained emission tomography images. Moreover, X-ray attenuation coefficients can be combined with emission measurements in order to create combined anatomical-functional images. It is imperative, then, that as low X-ray dosage as possible be used. At those fluxes implementation of iterative algorithms becomes desirable. However, that was not the case in clinical practice where X-ray fluxes used are high enough and noniterative algorithms give good results. In order to use the acquired data in a statistically efficient manner an appropriate model has to be employed. Also an efficient algorithm has to be used to solve the objective function. In this paper it is shown that at low fluxes an appropriate weighting becomes a crucial part of the model. Results are presented first for the single energy case and then for the dual energy case.

  • Cone-Beam X-Ray Tomography with Arbitrary-Orientation X-ray Tube

    X-ray computed tomography is a technique to reconstruct an image of trans- axial slab of the object from a series of X-ray radiographs taken at a prior- known angle. Sequences of X-ray radiographs are served as two-dimensional projection data for a 3D tomography. The most popular Feldkamp algorithm which is based on filtered backprojection (FBP) approaches has shown to perform well for 3D reconstruction. Conventional X-ray computed tomography was implemented on a c-arm X-ray apparatus where the X-ray tube and detector is capable of rotating to capture radiograph at any specific angle. In this paper, the concept of X-ray computed tomography for non c-arm X-ray apparatus was presented. In the purposed method, the cross-section of the object can be reconstructed from the multiple-viewed radiographs taken with arbitrary orientation of X-ray tube. The simulation results demonstrated the potential of such method

  • A CMOS IC for X-ray computed tomography

    In x-ray tomography CdTe detectors can be used to convert photons into impulses of charge. A fully integrated charge-sensitive system is implemented in this work, that convert a few femptocoulombs of charge to voltage pulses of around 100-500 mV, while preserving the sharpness of the impulses. On-chip comparator and delay logic convert this analog output into a digital pulse train of fixed, narrow pulse width, ready to be counted by the computer. The op-amps used in the charge-sensitive amplifier have 65Mhz GBW, 80dB DC gain and >70° phase margin. It has a white noise spectral density of 8nV/sqrt(Hz) and a flicker noise corner frequency of 100kHz. The IC is capable of resolving a minimum ion impulse rate of 5-10 Mhz and a minimum input charge of 1 femptocoulomb.

  • X-ray tomography on IR-T1 tokamak

    Summary form only given, as follows. Measurements of soft X-ray emission from the IR-T1 tokamak plasma have been analysed with tomographic reconstruction methods. IR-T1 is a small air core transformer tokamak with circular cross- section and without copper shell and divertor (R=45 cm, a=12.5 cm, Bt<1 T, Ip=20-40, Ne=(0.7-2.5)/spl times/10/sup 1/3 cm/sup -/3, Te=150-200 eV). The detector system is on a circular are view IR-T1 tokamak plasmas through a thin beryllium window (in a fashion similar to that of a pin-hole camera), to provide poloidal imaging of soft X-ray emission (SXR) in the 600 eV-20 keV range. Each detector has an active area 3/spl times/20 mm/sup 2/. The signals are digitized every 4 /spl mu/s or 8 /spl mu/s by use of 8 bit transient recorders and the frequency response of detector-preamplifier system is from 10 Hz-200 kHz. The tomography method (Cormack's method) is used for reconstructing the images of SXR emissivity distribution in the poloidal cross-section of IR-T1 tokamak. X-ray imaging (XIS) diagnostics of the sawtooth oscillation have tended to emphasize the coincidence between magnetic surfaces and the contours of equal X-ray emissivity. Because there is a detector array, one-dimensional images of SXR emissivity are obtained without having to resort to rotation models. This method has been used to study the internal disruptions and m=1 oscillation. The reconstructed images in the phase before a sawtooth crash have shown the hot plasma core move gradually toward one side, this is considered that as the increasing m=1 kink mode.

  • Application of CdTe and CZT detectors in ultra fast electron beam X-ray tomography

    Ultra fast electron beam tomography has been developed as a novel tool for visualization of fast processes. As in medical electron beam computed tomography (CT) this technique is based on the generation of images from radiographs produced with a rapidly scanned electron beam. Scanning frequencies of few thousand frames per second require X-ray detectors which can be read out at rates up to one megahertz. Such detectors must be highly efficient regarding conversion efficiency and because of the high photon flux they need to be operated in current mode. In a preliminary study we investigated the performance of different commercial CZT and CdTe room- temperature semiconductor detectors.

  • Application of a TMGe detector to high energy pulsed X-ray tomography

    A TMGe detector designed for high-energy tomography has been successfully tested on a 100-Hz pulsed X-ray beam produced by a 8-MeV linear accelerator. A dynamic range of five decades has been measured, corresponding to 25-cm lead attenuation, with a maximum dose rate of 0.43 rad/s. The ratio between the electronic pulse current and the ionic interpulse current, mostly dependent on the duty cycle, was improved by means of electronics integrating during the pulse and just before. TMGe has been demonstrated to be an interesting detecting medium for fan-beam tomography, where a large number of very homogeneous, high-dynamic-range cells is required.<<ETX>>

  • X-ray tomography of warm dense matter

    Studies of warm dense matter (WDM) is an emerging and challenging field that is at the border of condensed matter physics and plasma physics. WDM is created in laboratory in the interactions of intense laser (or particle) beams with solid-density matter. With a laser pulse focused to diameters of a few micrometers, gradients of the generated-plasma parameters and ultra-intense induced electric and magnetic fields are expected to be of a similar scale and, thus, measurements with high spatial resolution are desired. Because of the high density, only short-wavelength radiation may escape the interior of the target, thus, the inner-shell x-ray emission, e.g., K_ is an important instrument to yield valuable information on such plasmas. Furthermore, intensity and shape of inner-shell lines depend on properties of both the thermal (or "bulk") and suprathermal ("fast" or "hot") electron distributions.

  • Software for the Real Time Soft X-ray Tomography System at JET

    None

  • Contribution to Quantitative Ultrasound Diffraction Tomography

    None

  • Application of TMS, TMGe to high-energy X-ray tomography

    The ionic mobilities of two organometallic compounds, TMS (tetramethylsilane) and TMGe (tetramethylgermanium), were measured. A TMGe detector designed for high-energy tomography was successfully tested on a 100 Hz pulsed X-ray beam produced by a 8 MeV linear accelerator; a dynamic range of five decades was measured, corresponding to 25 cm lead attenuation, with a max dose rate of 0.43 rad/s. The ratio between the electronic pulse current and the ionic interpulse current, mostly dependent on the duty cycle, was improved by means of an electronic circuit integrating during and just before the pulse.<<ETX>>



Standards related to X-ray tomography

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Jobs related to X-ray tomography

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