beam hardening

beam hardening

the process of increasing the average energy level of an x-ray beam by filtering out the low-energy photons.
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Smart MAR addresses this challenge with an innovative three-stage, projection-based method designed to address both causes of metal artifacts photon starvation and beam hardening.
Beam hardening (loss of low energy photons in X-ray spectra) and dynamic range (here 12 bit) limit accuracy of X-ray computer tomography in these cases.
The electron beam hardening is a high performance procedure of surface thermal treatment, very little industrially used in work-piece surface hardening due to insufficient knowledge of the adequate working conditions.
To identify the space distribution of the layer hardness after hardening, as well as the width and depth of hardened strip is most important for determining the degree of strip superposition, to obtain a uniformly hardened layer in the case of electron beam hardening of parts (Neagu, 1999).
Without adequate beam hardening correction, the changes in the attenuation coefficients of the rays as they pass through different densities are not proportional to the abrupt changes in the bulk densities of the media.
The high power and high heat-dissipation capability of the Innova X-ray tube enables spectral filtration for X-ray beam hardening to deliver a more monochromatic and efficient beam.
The software is designed to reduce scatter and lag and corrects for the effects of beam hardening.
2010) and the dependences relations depicted in figures 1 to 5 showed that the hardness obtained by electron beam hardening definitely depends on the type and proprieties of the work-piece material, which is a rather complex dependence.
CT imaging of the posterior fossa has experienced challenges related to beam hardening artifact from the petrous bones," said Michael Lev M.
In this paper we are focused on electron beam hardening, that use extremely high-energy input to austenitize a very thin surface layer.
A second feature is a highly advanced Beam Hardening Correction, which dramatically improves the reconstructed CT image quality by correcting anomalous dark shadows between and around bone structures that occur as a by-product in CT imaging, and by eliminating streaking and other artifacts.