Results 151 to 160 of about 10,484 (198)
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Proceedings, annual meeting, Electron Microscopy Society of America, 1988
We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As
H.W. Deckman +3 more
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We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As
H.W. Deckman +3 more
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Photoluminescence microtomography of diamond
Philosophical Magazine B, 1990Abstract The three-dimensional distribution of various types of point defects in diamond crystals has been investigated by means of new photoluminescence tomographic techniques. In relatively perfect natural yellow diamonds the zoned distribution of blue luminescent N3 and blue–green luminescent 463·0 nm centres was mapped.
W. J. P. Van Enckevort, E. P. Visser
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4D time-resolved in-vivo microtomography
2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro, 2009Micro-CT scanners are becoming widely used for in-vivo imaging of small laboratory animals. However, imaging of chest area remains a challenging task due to periodic respiratory and cardiac motion. To reduce motion artifacts and to allow dynamic imaging, we propose a retrospective synchronization method for scans of chest area in in-vivo micro-CT ...
Alexander Sasov, Xuan Liu, Phil Salmon
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Biological tissues analysis by XRF microtomography
Applied Radiation and Isotopes, 2010The main of this work is to determine the elemental distribution in breast and prostate tissue samples in order to verify the concentration of some elements correlated with characteristics and pathology of each tissue observed by the X-ray transmission microtomography (microCT).
G R, Pereira +5 more
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Microtomography of magnesium implants in bone and their degradation
SPIE Proceedings, 2006Biodegradable metal implants for musculoskeletal and intravascular applications made of magnesium alloys have been shown to degrade in-vivo by corrosion. The in vivo corrosion of magnesium alloys has the potential to provide a new mechanism which will allow metal implants to be applied in musculoskeletal surgery as biodegradable implants. This would
Witte, F. +3 more
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Transmission electron microtomography in soft materials
Microscopy, 2012This review summarizes the recent advances in three-dimensional (3D) imaging techniques and their application to polymer nanostructures, for example, microphase-separated structures of block copolymers. We place particular emphasis on the method of transmission electron microtomography (electron tomography for short; hereafter abbreviated as ET).
Hiroshi, Jinnai +5 more
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X-ray microtomography of bones and teeth
Physiological Measurement, 1996X-ray microtomography is a miniaturized version of computerized axial tomography with a resolution of the order of micrometres. In the biomedical field it is particularly useful in the study of hard tissue because of its ability to accurately measure the linear attenuation coefficient.
G R, Davis, F S, Wong
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Three-Dimensional X-Ray Microtomography
Science, 1987The new technique of x-ray microtomography nondestructively generates three-dimensional maps of the x-ray attenuation coefficient inside small samples with approximately 1 percent accuracy and with resolution approaching 1 micrometer. Spatially resolved elemental maps can be produced with synchrotron x-ray sources by scanning samples at energies just ...
B P, Flannery +3 more
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Biological Applications of Microtomography
1988X-ray microtomography can be used to obtain, non-destructively, 3-dimensional information about biological structures at a resolution of a few microns. The information may be purely morphological, but if accurately monochromatic X-radiation is used, the results are in the form of the 3-dimensional distribution of the linear absorption coefficient.
J. C. Elliott +3 more
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EPR imaging in biological applications: Towards microtomography
Magnetic Resonance in Chemistry, 1995AbstractEPR imaging and microtomography promises to be a powerful tool for the EPR spectroscopist, but the expansion of this technique was hindered by the lack of commercial apparatus. A simple modification of an existing commercial system that can reach a resolution of the order of 75 μm with a gradient of 150 mT m−1 is described.
SOTGIU A. +4 more
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