Improving the contrast-to-noise ratio by averaging in scintillation detectors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00466632" target="_blank" >RIV/68378297:_____/16:00466632 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Improving the contrast-to-noise ratio by averaging in scintillation detectors
Original language description
From the point of view of the image quality, the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) are crucial parameters. In case of the scintillation detectors, which are widely used in X-ray radiography and computed tomography, these two parameters are strongly determined by the inherent noise of the detector and the X-ray beam fluctuation. Both parameters can be lowered by averaging of images from the same projections, but this approach leads to an increased time of the tomography, which can be an undesirable effect. This paper shows a method that allows determination of a minimum number of averaged images for required SNR or CNR based on two initial projections. The results are intended to be used for optimized setting of the detector parameters and X-ray source parameters for a tomography to obtain the best possible results in a reasonable time.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
AL - Art, architecture, cultural heritage
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LO1219" target="_blank" >LO1219: Sustainable advanced development of CET</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů