Results 201 to 210 of about 798,577 (242)
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Computed radiography X-ray exposure trends
Academic Radiology, 1995Computed radiography provides correct optical density on film, independent of the incident radiation exposure, but it can result in under- or overexposure of the imaging plate. In the current study, we evaluated the radiation exposure trends of computed radiography over a 2-year period for portable chest examinations to determine and compare the ...
J A, Seibert, D K, Shelton, E H, Moore
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1987
X-ray computed tomography (CT) is remarkably helpful in the diagnosis of diseases of the upper abdominal organs, particularly the liver, biliary tract, and pancreas. However, CT examination has not been established as reliable pathognomonic method due to the rapid development of technique and equipment.
Sadayuki Sakuma +2 more
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X-ray computed tomography (CT) is remarkably helpful in the diagnosis of diseases of the upper abdominal organs, particularly the liver, biliary tract, and pancreas. However, CT examination has not been established as reliable pathognomonic method due to the rapid development of technique and equipment.
Sadayuki Sakuma +2 more
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2023
En esta ponencia se presenta una breve introducción a la técnica: Tomografía Computerizada de Rayos-X. Además, se presenta el tomógrafo ubicado en la Unidad de Difracción de Rayos-X y Tomografía Computerizada de los Servicios Centrales de Apoyo a la Investigación, SkyScan 2214 (Bruker S.L.), así como los experimentos que se están llevando a cabo ...
Salcedo, Inés R. +2 more
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En esta ponencia se presenta una breve introducción a la técnica: Tomografía Computerizada de Rayos-X. Además, se presenta el tomógrafo ubicado en la Unidad de Difracción de Rayos-X y Tomografía Computerizada de los Servicios Centrales de Apoyo a la Investigación, SkyScan 2214 (Bruker S.L.), así como los experimentos que se están llevando a cabo ...
Salcedo, Inés R. +2 more
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Computational X-ray Spectroscopy
2011This is a short review on computational X-ray ...
V Carravetta, H Agren
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Computations in X-Ray Crystallography
1990In normalized coordinates, the electron density F of a crystal is a function of r ∈ R 3, the Euclidean 3-space, that satisfies the periodicity condition, $$F\left( {r + n} \right) = F\left( x \right),r \in {R^3},n \in {Z^3}.$$ (1) We can write F(r) as a Fourier series $$F\left( r \right) = \sum\limits_{n \in {Z^3}} {\rho \left( n \right ...
Richard Tolimieri, Myoung An
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2022
Abstract This chapter focuses on the features of x-ray and computed tomography (CT). X-ray uses a form of radiation to conduct basic body imaging and destroy tumor beds to facilitate cancer therapy. However, ionization is one of the downsides of x-rays as it could result in a carcinogen.
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Abstract This chapter focuses on the features of x-ray and computed tomography (CT). X-ray uses a form of radiation to conduct basic body imaging and destroy tumor beds to facilitate cancer therapy. However, ionization is one of the downsides of x-rays as it could result in a carcinogen.
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A computer X-ray monochromator
Metallography, 1973Abstract A method of separating an x-ray diffraction profile made with K α radiation into its K α 1 and K α 2 components has been developed. The separation is accomplished employing only the one assumption that K α 1 and K α 2 profiles have the same shape.
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Computing Problems and Methods in X-Ray Crystallography
1964Publisher Summary This chapter presents computing problems and general computational methods in X-ray crystallography, including structure factor calculation, Fourier series calculation, differential synthesis refinement, least-squares, Patterson methods, and phase problem X-ray crystallography.
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2000
X-ray computed tomography (CT) is still a workhorse of neuroimaging despite the significant contributions to neurodiagnosis made by newer technologies such as magnetic resonance imaging (MRI), positron emission tomography (PET), and single proton emission CT (SPECT). Within only a few years of its introduction in 1972, by Geoffrey N.
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X-ray computed tomography (CT) is still a workhorse of neuroimaging despite the significant contributions to neurodiagnosis made by newer technologies such as magnetic resonance imaging (MRI), positron emission tomography (PET), and single proton emission CT (SPECT). Within only a few years of its introduction in 1972, by Geoffrey N.
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