Název: Optimization of acquisition parameters in radiography and tomography
Autoři: Vopálenský, Michal ; Vavřík, Daniel ; Kumpová, Ivana
Typ dokumentu: Příspěvky z konference
Konference/Akce: Conference on Industrial Computed Tomography (iCT 2017) /7./, Leuven (BE), 20170207
Rok: 2017
Jazyk: eng
Abstrakt: Contrast in radiographic images is one of the most important parameters both in radiography and tomography. This paper investigates the possibility of adjusting the radiographic parameters, in particular the accelerating voltage of the X-ray tube, in order to maximize the difference in the detected intensity in response to the change in the thickness of the investigated object. Simplified model is used that allows finding the optimal operating point for the given material and thickness without an apriory knowledge about the X-ray spectra, detector response and the material composition. It is shown that in case of small changes of thickness, the optimum is met when the detected intensity behind the object of certain thickness is at approx. 37 % of the full range (i.e., of the value that would be measured under the same conditions in the absence of the object). In spite of simplifications made, the theoretical model shows a very good correspondence with the experimental data. A brief consideration is made on the case of a general difference in thicknesses.
Klíčová slova: contrast; image processing; X-ray computed tomography; X-ray optimization; X-ray radiography
Číslo projektu: LO1219 (CEP)
Poskytovatel projektu: GA MŠk
Zdrojový dokument: 7th Conference on Industrial Computed Tomography (iCT 2017), ISSN 1435-4934

Instituce: Ústav teoretické a aplikované mechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: http://www.ndt.net/events/iCT2017/app/content/Paper/54_Vopalensky.pdf
Původní záznam: http://hdl.handle.net/11104/0270741

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-373343


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav teoretické a aplikované mechaniky
Konferenční materiály > Příspěvky z konference