About: Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work devotes to the optimization of digital X ray transmission radiography for the observation of time dependent processes using a single X-ray photon counting pixel device. The maximization of frame rate of acquired roentgenograms is crucial for this purpose. The influence of the X ray tube voltage on exposure time, which is necessary for sufficient quality of roentgenograms, was investigated. Roentgenograms are distorted due to non uniform pixel detection efficiency across the X ray detector. Such distortion can be successfully eliminated by the proposed “Direct thickness calibration method” regardless of X ray beam hardening, which is due to the variation of inspected body absorption. This work devotes to the optimization of digital X ray transmission radiography for the observation of time dependent processes using a single X-ray photon counting pixel device. The maximization of frame rate of acquired roentgenograms is crucial for this purpose. The influence of the X ray tube voltage on exposure time, which is necessary for sufficient quality of roentgenograms, was investigated. Roentgenograms are distorted due to non uniform pixel detection efficiency across the X ray detector. Such distortion can be successfully eliminated by the proposed “Direct thickness calibration method” regardless of X ray beam hardening, which is due to the variation of inspected body absorption. (en) Tato práce je věnována optimalizaci sledování časově závislých procesů metodou rentgenovské radiografie pomocí pixelových detektorů jednotlivých fotonů. Maximalizace četnosti snímků je zásadním problémem této oblasti. Byl studován vliv pracovního bodu rentgenky (napětí) na nutné exposiční časy. Rentgenogramy jsou poškozovány díky nestejné citlivosti jednotlivých pixelů snímače. Toto poškození stejně jako vliv efktu tvrdnutí svazku lze úspěšně odstranit metodou přímé kalibrace tloušťky která je (cs)
Title	Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device Kvalita rentgenovské radiografie založené na pixelovém detektoru jednotlivých fotonů (cs) Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device (en)
skos:prefLabel	Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device Kvalita rentgenovské radiografie založené na pixelovém detektoru jednotlivých fotonů (cs) Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device (en)
skos:notation	RIV/68407700:21670/05:15118446!RIV06-GA0-21670___
http://linked.open.../vavai/riv/strany	113 ; 117
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1P04LA211), P(GA106/04/0567), Z(AV0Z20710524)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Uher, Josef Vavřík, Daniel Jakůbek, Jan Pospíšil, Stanislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Ústav technické a experimentální fyziky ČVUT
http://linked.open...dnocenehoVysledku	539804
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/05:15118446
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Beam Hardenning; Pixel Detectors; Radiografie; X-ray tube (en)
http://linked.open.../riv/klicoveSlovo	X-ray tube Beam Hardenning Radiografie Pixel Detectors
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[74DF7C327512]
http://linked.open...i/riv/nazevZdroje	Nuclear Instruments and Methods in Physics Research, Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
http://linked.open...in/vavai/riv/obor	BG
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Collaboration of the Czech Republic with CERN Study of damage zone in high ductile materials in vicinity of crack tip by X-ray dynamic defectoscopy method
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	A546
http://linked.open...iv/tvurceVysledku	Jakůbek, Jan Pospíšil, Stanislav Vavřík, Daniel Uher, Josef
http://linked.open...n/vavai/riv/zamer	Time dependent response of materials, systems and environments on natural and human actions
issn	0168-9002
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	21670

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