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dc.contributor.authorEskandarlou, A.en
dc.contributor.authorJafari, A.en
dc.contributor.authorMohammadi, M.en
dc.contributor.authorZehtabian, M.en
dc.contributor.authorFaghihi, R.en
dc.contributor.authorShokri, A.en
dc.contributor.authorPourolajal, J.en
dc.identifier.citationJournal of X-ray Science and Technology, 2014; 22(4):459-470en
dc.description.abstractThe effectiveness of added filters including conventional and rare earth materials for dental radiography tasks was investigated using a simulation approach. Current study focuses on the combination of a range of various filters to investigate the reduction of radiation absorbed dose and improving the quality of a radiography image. To simulate the X-ray beam spectrum, a MCNP5 code was applied. Relative intensity, beam quality, and mean energy were investigated for a typical dental radiography machine. The impact of different rare-earth materials with different thicknesses and tube voltages on the X-ray spectrum was investigated. For Aluminum as a conventional filter, the modeled X-ray spectra and HVL values were in a good agreement with those reported by IPEM. The results showed that for a 70 kVp voltage, with an increase of the thickness and atomic number of a given added filters, an increase of HVL values were observed. However, with the increase of the attenuator thickness, X-ray beam intensity decreases. For mean energy, different results were observed. It was also found that rare earth made filters reduce high energy X-ray radiation due to k-edge absorption. This leads to an ideal beam for intra-oral radiography tasks. However, as a disadvantage of rare earth added filters, the reduction of the tube output levels should also be considered.en
dc.description.statementofresponsibilityAmir Eskandarlou, Amir Abbas Jafari, Mohammad Mohammadi, Mehdi Zehtabian, Reza Faghihi, Abbas Shokri and Jalal Pourolajalen
dc.publisherIOS Pressen
dc.rights© 2014 – IOS Press and the authors. All rights reserved.en
dc.subjectDental radiography; diagnostic X ray; rare earth elementsen
dc.titleImpact of rare earth element added filters on the X-ray beam spectra: a Monte Carlo approachen
dc.typeJournal articleen
pubs.library.collectionPhysics publicationsen
dc.identifier.orcidMohammadi, M. [0000-0002-2393-8849]en
Appears in Collections:Physics publications

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