68Ga-Labelled Carbon Nanoparticles for Ventilation PET/CT Imaging: Physical Properties Study and Comparison with Technegas® View Full Text


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Article Info

DATE

2020-09-04

AUTHORS

Frédérique Blanc-Béguin, Philippe Eliès, Philippe Robin, Raphaël Tripier, Nelly Kervarec, Catherine A. Lemarié, Simon Hennebicq, Cécile Tromeur, Virginie Cogulet, Pierre-Yves Salaün, Pierre-Yves Le Roux

ABSTRACT

PurposeThe use of 68Ga-labelled carbon nanoparticles has been proposed for lung ventilation PET/CT imaging. However, no study has assessed the physical properties of 68Ga-labelled carbon nanoparticles. The aim of this study therefore was to evaluate the shape and size of 68Ga-labelled carbon nanoparticles, and to determine the composition of the aerosol, as opposed to 99mTc-labelled carbon nanoparticles aerosol.Procedures99mTc- and 68Ga-labelled carbon nanoparticles, stable gallium carbon nanoparticles, 0.9 % NaCl and 0.1 N HCl-based carbon nanoparticles were produced using an unmodified Technegas® generator, following the usual technique used for clinical Technegas® production. The shape and size of particles were studied by transmission electron microscopy (TEM) after decay of the radioactive samples. The composition of the 68Zn- and 99Tc-labelled carbon nanoparticles aerosols was assessed using scanning electron microscopy (SEM) coupled with energy dispersive X-ray (EDX) analysis after decay of the 68Ga- and 99mTc-labelled carbon nanoparticles, respectively.ResultsOn TEM, all samples showed similar shape with hexagonally structured primary particles, agglomerated in clusters. The mean diameters of primary stable gallium carbon nanoparticles, 99Tc- and 68Zn-labelled carbon nanoparticles were 22.4 ± 10 nm, 20.9 ± 7.2 nm and 19.8 ± 11.7 nm, respectively.ConclusionUsing Technegas® generator in the usual clinical way, 99mTc- and 68Ga-labelled carbon nanoparticles demonstrated similar shape and diameters in the same size range size. These results support the use of 68Ga-labelled carbon nanoparticles for the assessment of regional lung ventilation function with PET imaging. More... »

PAGES

62-69

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11307-020-01532-6

DOI

http://dx.doi.org/10.1007/s11307-020-01532-6

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1130576322

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/32886302


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27 schema:description PurposeThe use of 68Ga-labelled carbon nanoparticles has been proposed for lung ventilation PET/CT imaging. However, no study has assessed the physical properties of 68Ga-labelled carbon nanoparticles. The aim of this study therefore was to evaluate the shape and size of 68Ga-labelled carbon nanoparticles, and to determine the composition of the aerosol, as opposed to 99mTc-labelled carbon nanoparticles aerosol.Procedures99mTc- and 68Ga-labelled carbon nanoparticles, stable gallium carbon nanoparticles, 0.9 % NaCl and 0.1 N HCl-based carbon nanoparticles were produced using an unmodified Technegas® generator, following the usual technique used for clinical Technegas® production. The shape and size of particles were studied by transmission electron microscopy (TEM) after decay of the radioactive samples. The composition of the 68Zn- and 99Tc-labelled carbon nanoparticles aerosols was assessed using scanning electron microscopy (SEM) coupled with energy dispersive X-ray (EDX) analysis after decay of the 68Ga- and 99mTc-labelled carbon nanoparticles, respectively.ResultsOn TEM, all samples showed similar shape with hexagonally structured primary particles, agglomerated in clusters. The mean diameters of primary stable gallium carbon nanoparticles, 99Tc- and 68Zn-labelled carbon nanoparticles were 22.4 ± 10 nm, 20.9 ± 7.2 nm and 19.8 ± 11.7 nm, respectively.ConclusionUsing Technegas® generator in the usual clinical way, 99mTc- and 68Ga-labelled carbon nanoparticles demonstrated similar shape and diameters in the same size range size. These results support the use of 68Ga-labelled carbon nanoparticles for the assessment of regional lung ventilation function with PET imaging.
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