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Statements

Subject Item
n2:RIV%2F68407700%3A21670%2F05%3A15118446%21RIV06-GA0-21670___
rdf:type
skos:Concept n6:Vysledek
dcterms: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. 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 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.
dcterms:title
Kvalita rentgenovské radiografie založené na pixelovém detektoru jednotlivých fotonů Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device
skos:prefLabel
Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device Kvalita rentgenovské radiografie založené na pixelovém detektoru jednotlivých fotonů Quality of X-ray Transmission Radiography Based on Single Photon Counting Pixel Device
skos:notation
RIV/68407700:21670/05:15118446!RIV06-GA0-21670___
n3:strany
113 ; 117
n3:aktivita
n8:Z n8:P
n3:aktivity
P(1P04LA211), P(GA106/04/0567), Z(AV0Z20710524)
n3:cisloPeriodika
1-2
n3:dodaniDat
n18:2006
n3:domaciTvurceVysledku
n4:7295642 n4:9985522 n4:2113120 n4:1338226
n3:druhVysledku
n11:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
539804
n3:idVysledku
RIV/68407700:21670/05:15118446
n3:jazykVysledku
n19:eng
n3:klicovaSlova
Beam Hardenning; Pixel Detectors; Radiografie; X-ray tube
n3:klicoveSlovo
n13:Pixel%20Detectors n13:X-ray%20tube n13:Radiografie n13:Beam%20Hardenning
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[74DF7C327512]
n3:nazevZdroje
Nuclear Instruments and Methods in Physics Research, Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
n3:obor
n17:BG
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n16:1P04LA211 n16:GA106%2F04%2F0567
n3:rokUplatneniVysledku
n18:2005
n3:svazekPeriodika
A546
n3:tvurceVysledku
Pospíšil, Stanislav Uher, Josef Jakůbek, Jan Vavřík, Daniel
n3:zamer
n14:AV0Z20710524
s:issn
0168-9002
s:numberOfPages
5
n10:organizacniJednotka
21670