نتایج جستجو برای: beam hardening
تعداد نتایج: 122991 فیلتر نتایج به سال:
Computed tomography (CT) devices are routinely employed to obtain three-dimensional images of the human body. The reconstructed CT numbers represent weighted x-ray attenuation coefficients. Their spectral weighting is influenced by the selected x-ray source spectrum, the detector characteristics, and the attenuating object itself. The quantitative ground truth of the scanned object is given by ...
Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with craniomaxillofacial (CMF) deformities. CBCT scans have relatively low cost and low radiation dose in comparison to conventional spiral CT scans. However, a major limitation of CBCT scans is the widespread image artifacts such as noise, beam hardening an...
The authors investigated the features of structural-phase state a composite based on stainless austenitic steel with addition 25% (vol.) aluminum bronze. was obtained by electron beam additive technology simultaneous feeding two wires. paper considers analysis and mechanical characteristics. contributions various mechanisms to hardening were evaluated. It established that multiphase structure i...
We explore the use of referenceless multi-material beam hardening correction methods, with an emphasis on maintaining data quality for real-world imaging of geologic materials with a view towards automation. In particular, we consider cases where the sample of interest is surrounded by a container of uniform material and propose a novel container-only pre-correction technique to allow automatio...
............................................................................................................................. ii Acknowledgments ............................................................................................................ iii Table of Contents .............................................................................................................. v List of ...
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