Improving the contrast-to-noise ratio by averaging in scintillation detectors

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Improving the contrast-to-noise ratio by averaging in scintillation detectors

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Improving the contrast-to-noise ratio by averaging in scintillation detectors

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

AL - Umění, architektura, kulturní dědictví

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1219" target="_blank" >LO1219: Udržitelný pokročilý rozvoj CET</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů