Results 301 to 310 of about 456,481 (326)
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Physics in Medicine and Biology, 2006
X-ray computed tomography (CT), introduced into clinical practice in 1972, was the first of the modern slice-imaging modalities. To reconstruct images mathematically from measured data and to display and to archive them in digital form was a novelty then and is commonplace today.
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X-ray computed tomography (CT), introduced into clinical practice in 1972, was the first of the modern slice-imaging modalities. To reconstruct images mathematically from measured data and to display and to archive them in digital form was a novelty then and is commonplace today.
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Journal of Petroleum Technology, 1987
Distinguished Author Series articles are general, descriptiverepresentations that summarize the state of the art in an area of technology bydescribing recent developments for readers who are not specialists in thetopics discussed. Written by individuals recognized as experts in the area, these articles provide key references to more definitive work and
Scott Lee Wellington, Harold J. Vinegar
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Distinguished Author Series articles are general, descriptiverepresentations that summarize the state of the art in an area of technology bydescribing recent developments for readers who are not specialists in thetopics discussed. Written by individuals recognized as experts in the area, these articles provide key references to more definitive work and
Scott Lee Wellington, Harold J. Vinegar
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Circularly coded x-ray tomography
Applied Optics, 1984A 3-D radiographic transmission tomography technique based on coded-aperture imaging is described. In this technique an x-ray source moving on a circular path parallel to the film projects an image of the object onto the film and convolves this image with a circle.
Jack Sklansky, Satoshi Kawata
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2020
Whilst additive manufacturing allows the production of highly complex parts, X-ray computed tomography enables the holistic characterisation and measurement of such parts, including their intricate geometries and inner features that would not be accessible otherwise.
Simone Carmignato +3 more
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Whilst additive manufacturing allows the production of highly complex parts, X-ray computed tomography enables the holistic characterisation and measurement of such parts, including their intricate geometries and inner features that would not be accessible otherwise.
Simone Carmignato +3 more
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Nondestructive Testing and Evaluation, 2005
This paper discusses issues related to the development of reconstructed tomography based on scattered X-ray radiation. For most X-ray tomography, based on collimated initial and scattered radiation, the distribution of the object density (linear scattering coefficient) is reconstructed by the number of counted photons scattered in the reconstructed ...
Y.V. Anosov +3 more
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This paper discusses issues related to the development of reconstructed tomography based on scattered X-ray radiation. For most X-ray tomography, based on collimated initial and scattered radiation, the distribution of the object density (linear scattering coefficient) is reconstructed by the number of counted photons scattered in the reconstructed ...
Y.V. Anosov +3 more
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X-ray tomography of whole cells
Current Opinion in Structural Biology, 2005X-ray tomography has been shown to provide insights into the internal structure of whole cells that can't be obtained by any other means. With recent advances in instrumentation and the advent of automated cryogenic sample stages, it has become possible to collect isotropic tomographic data from radiation-sensitive cells and to compute reconstructions ...
Mark A. Le Gros +3 more
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X-ray and ultrasonic tomography
Insight - Non-Destructive Testing and Condition Monitoring, 2003Conventional X-ray and ultrasonic NDT methods are very popular in Indian industry and their scope is growing at a steady pace. Tomographic extensions of these methods, however, have not made a mark yet. There is considerable activity in the country to develop CT scanners, X-ray as well as ultrasonic, for a variety of NDT applications.
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X-ray tomography of Schizosaccharomyces pombe
Differentiation, 2007The genetic tractability of the unicellular yeast Schizosaccharomyces pombe has resulted in it becoming an important model organism for the study of many eukaryotic cellular processes, in particular cell division. Over the past few years much progress has been made toward understanding the mechanisms that regulate eukaryotic cell division and the ...
Laurence D. Etkin +4 more
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2019
Doga Gursoy contributed to this chapter. Up until now we have concentrated on two-dimensional (2D) imaging of thin specimens. However, one of the advantages microscopy with X rays offers is great penetrating power. This means that X rays can image much thicker specimens than is possible in, for example, electron microscopy (as discussed in Section 4 ...
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Doga Gursoy contributed to this chapter. Up until now we have concentrated on two-dimensional (2D) imaging of thin specimens. However, one of the advantages microscopy with X rays offers is great penetrating power. This means that X rays can image much thicker specimens than is possible in, for example, electron microscopy (as discussed in Section 4 ...
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2017
This chapter provides an overview of the use of x-ray and computed tomography (CT)-based imaging for brachytherapy. Treatment planning in brachytherapy requires accurate imaging of both the implanted materials and the surrounding anatomy. Ultrasound (US) and magnetic resonance imaging (MRI), which can provide excellent soft-tissue contrast for ...
Michael J. Zelefsky, Martin T. King
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This chapter provides an overview of the use of x-ray and computed tomography (CT)-based imaging for brachytherapy. Treatment planning in brachytherapy requires accurate imaging of both the implanted materials and the surrounding anatomy. Ultrasound (US) and magnetic resonance imaging (MRI), which can provide excellent soft-tissue contrast for ...
Michael J. Zelefsky, Martin T. King
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