English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/130436
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Positron kinetics in an idealized PET environment

AuthorsRobson, R.E.; Brunger, M.J.; Buckman, S.J.; García, Gustavo ; Petrovic, Z.L.; White, R.D.
Issue Date6-Aug-2015
PublisherNature Publishing Group
CitationScientific Reports 5: 12674 (2015)
AbstractThe kinetic theory of non-relativistic positrons in an idealized positron emission tomography PET environment is developed by solving the Boltzmann equation, allowing for coherent and incoherent elastic, inelastic, ionizing and annihilating collisions through positronium formation. An analytic expression is obtained for the positronium formation rate, as a function of distance from a spherical source, in terms of the solutions of the general kinetic eigenvalue problem. Numerical estimates of the positron range-a fundamental limitation on the accuracy of PET, are given for positrons in a model of liquid water, a surrogate for human tissue. Comparisons are made with the â gas-phaseâ (tm) assumption used in current models in which coherent scattering is suppressed. Our results show that this assumption leads to an error of the order of a factor of approximately 2, emphasizing the need to accurately account for the structure of the medium in PET simulations.
Description10 págs.; 4 figs.; 1 tab.; Open Access funded by Creative Commons Atribution Licence 4.0
Publisher version (URL)http://dx.doi.org/10.1038/srep12674
URIhttp://hdl.handle.net/10261/130436
DOI10.1038/srep12674
Identifiersdoi: 10.1038/srep12674
issn: 2045-2322
Appears in Collections:(CFMAC-IFF) Artículos
Files in This Item:
File Description SizeFormat 
Positron.pdf498 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.