Processing of projections containing phase contrast in laboratory micro-computerized tomography imaging

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F13%3A00069093" target="_blank" >RIV/00216224:14740/13:00069093 - isvavai.cz</a>

Výsledek na webu

<a href="http://journals.iucr.org/j/issues/2013/04/00/xk5002/xk5002.pdf" target="_blank" >http://journals.iucr.org/j/issues/2013/04/00/xk5002/xk5002.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1107/S002188981300558X" target="_blank" >10.1107/S002188981300558X</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Processing of projections containing phase contrast in laboratory micro-computerized tomography imaging

Popis výsledku v původním jazyce

Free-space-propagation-based imaging belongs to several techniques for achieving phase contrast in the hard X-ray range. The basic precondition is to use an X-ray beam with a high degree of coherence. Although the best sources of coherent X-rays are synchrotrons, spatially coherent X-rays emitted from a sufficiently small spot of laboratory microfocus or sub-microfocus sources allow the transfer of some of the modern imaging techniques from synchrotrons to laboratories. Spatially coherent X-rays traverse a sample leading to a phase shift. Beam deflection induced by the local change of refractive index may be expressed as a dark-bright contrast on the edges of the object in an X-ray projection. This phenomenon of edge enhancement leads to an increase inspatial resolution of X-ray projections but may also lead to unpleasant artefacts in computerized tomography unless phase and absorption contributions are separated.

Název v anglickém jazyce

Processing of projections containing phase contrast in laboratory micro-computerized tomography imaging

Popis výsledku anglicky

Free-space-propagation-based imaging belongs to several techniques for achieving phase contrast in the hard X-ray range. The basic precondition is to use an X-ray beam with a high degree of coherence. Although the best sources of coherent X-rays are synchrotrons, spatially coherent X-rays emitted from a sufficiently small spot of laboratory microfocus or sub-microfocus sources allow the transfer of some of the modern imaging techniques from synchrotrons to laboratories. Spatially coherent X-rays traverse a sample leading to a phase shift. Beam deflection induced by the local change of refractive index may be expressed as a dark-bright contrast on the edges of the object in an X-ray projection. This phenomenon of edge enhancement leads to an increase inspatial resolution of X-ray projections but may also lead to unpleasant artefacts in computerized tomography unless phase and absorption contributions are separated.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: CEITEC - central european institute of technology</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Crystallography

ISSN

0021-8898

e-ISSN

—

Svazek periodika

46

Číslo periodika v rámci svazku

Aug

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

933-938

Kód UT WoS článku

000322032300017

EID výsledku v databázi Scopus

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