Impact of pixel value truncation on image quality of low dose chest CT.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15589
Abstract: PURPOSE In some noisy low-dose CT lung cancer screening images, we noticed that the CT density values of air were increased and the visibility of emphysema was distinctly decreased. By examining histograms of these images,… read more here.
Keywords: pixel value; mean density; density; truncation ... See more keywords
Republication of: Mean density of radiation in the Metagalaxy and certain problems in relativistic cosmology
Sign Up to like & getrecommendations! Published in 2018 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2441-x
Abstract: This paper appeared in Russian in Doklady AN SSSR and in English in the translation journal Soviet Physics–Doklady. In it the cosmic radiation from galaxies in the frequency range $$10^8 \hbox {Hz}$$108Hz to $$10^{15} \hbox… read more here.
Keywords: cosmology; mean density; hbox; republication mean ... See more keywords
On the Mean Density of Matter in the Universe and Dark Energy
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DOI: 10.1007/s11182-017-1164-x
Abstract: On the basis of the special relativity theory (SRT), the mean density of matter in the Universe is calculated with the relativistic kinetic energy of receding galaxies taken into account. Within the framework of the… read more here.
Keywords: matter universe; mean density; density; dark energy ... See more keywords
On the mean density of states of some matrices related to the beta ensembles and an application to the Toda lattice
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DOI: 10.1063/5.0076539
Abstract: In this paper, we study tridiagonal random matrix models related to the classical β-ensembles (Gaussian, Laguerre, and Jacobi) in the high-temperature regime, i.e., when the size N of the matrix tends to infinity with the… read more here.
Keywords: mean density; states matrices; toda lattice; density states ... See more keywords