Zobrazeno 1 - 10
of 273
pro vyhledávání: '"Maximum likelihood expectation maximization"'
Publikováno v:
Yuanzineng kexue jishu, Vol 58, Iss 10, Pp 2211-2219 (2024)
As radioactive sources are increasingly used in scientific research, industry and other fields, radioactive sources are often lost due to improper management and control. Since gamma rays have higher penetrating power and longer action distance than
Externí odkaz:
https://doaj.org/article/3edbc582720545ec9b494ac4f6674c40
Publikováno v:
Alexandria Engineering Journal, Vol 99, Iss , Pp 76-82 (2024)
Positron Emission Tomography (PET) image reconstruction remains a pivotal area in PET technology, critically influencing clinical diagnostic outcomes. Addressing the need for enhanced image quality, this study introduces a novel algorithm for PET ima
Externí odkaz:
https://doaj.org/article/ce2ba4be7932498ab3fb8541425a1df3
Publikováno v:
Yuanzineng kexue jishu, Vol 58, Iss 5, Pp 1152-1159 (2024)
Neutron depth profiling (NDP) is a non-destructive analysis method which is widely used in lithium batteries, semiconductors, and other complex and high-precision industries. The NDP spectrum is the second particles of the interaction between neutron
Externí odkaz:
https://doaj.org/article/d5c9c05d34e64830b5006d7731b57fb1
Publikováno v:
Mathematical Biosciences and Engineering, Vol 19, Iss 12, Pp 13050-13061 (2022)
Image reconstruction is extremely important for computed tomography (CT) imaging, so it is significant to be continuously improved. The unfolding dynamics method combines a deep learning model with a traditional iterative algorithm. It is interpretab
Externí odkaz:
https://doaj.org/article/45e5230f0ff44d788ffeeb4aa7942747
Akademický článek
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Publikováno v:
Nuclear Engineering and Technology, Vol 54, Iss 6, Pp 2204-2212 (2022)
Recently, the demand for alpha imaging detectors for quantifying the distributions of alpha particles has increased in various fields. This study aims to reconstruct a high-resolution image from an alpha imaging detector by applying a super-spatial r
Externí odkaz:
https://doaj.org/article/d687ac23a95343c688cef4e3ea6929c8
Akademický článek
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Akademický článek
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Autor:
Taewoong Lee, Wonho Lee
Publikováno v:
Nuclear Engineering and Technology, Vol 53, Iss 7, Pp 2371-2376 (2021)
As the γ-ray energy increases, a reconstructed image becomes noisy and blurred due to the penetration of the γ-ray through the coded mask. Therefore, the thickness of the coded mask was increased for high energy regions, resulting in severely decre
Externí odkaz:
https://doaj.org/article/745dc9cb206d482c8fca2fceb0a9553f
Publikováno v:
IEEE Access, Vol 8, Pp 3397-3407 (2020)
Fast neutron computed tomography (FNCT) generally needs a longer measurement time because of low source strength and low detection efficiency. In order to reduce measurement time, methods of reducing single measurement time and the numbers of project
Externí odkaz:
https://doaj.org/article/6b106d84780f44079179b8b1d72907d8