Author:
Körnig Christian,Staufer Theresa,Schmutzler Oliver,Bedke Tanja,Machicote Andres,Liu Beibei,Liu Yang,Gargioni Elisabetta,Feliu Neus,Parak Wolfgang J.,Huber Samuel,Grüner Florian
Abstract
AbstractX-ray fluorescence imaging (XFI) is a non-invasive detection method of small quantities of elements, which can be excited to emit fluorescence x-ray photons upon irradiation with an incident x-ray beam. In particular, it can be used to measure nanoparticle uptake in cells and tissue, thus making it a versatile medical imaging modality. However, due to substantially increased multiple Compton scattering background in the measured x-ray spectra, its sensitivity severely decreases for thicker objects, so far limiting its applicability for tracking very small quantities under in-vivo conditions. Reducing the detection limit would enable the ability to track labeled cells, promising new insights into immune response and pharmacokinetics. We present a synchrotron-based approach for reducing the minimal detectable marker concentration by demonstrating the feasibility of XFI for measuring the yet inaccessible distribution of the endogenous iodine in murine thyroids under in-vivo conform conditions. This result can be used as a reference case for the design of future preclinical XFI applications as mentioned above.
Funder
Deutsche Forschungsgemeinschaft
Chinese Scholarship Council
Universität Hamburg
Publisher
Springer Science and Business Media LLC
Cited by
12 articles.
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