68Ga-labeled superparamagnetic iron oxide nanoparticles (SPIONs) for multi-modality PET/MR/Cherenkov luminescence imaging of sentinel lymph nodes
Identifieur interne : 003977 ( Main/Exploration ); précédent : 003976; suivant : 00397868Ga-labeled superparamagnetic iron oxide nanoparticles (SPIONs) for multi-modality PET/MR/Cherenkov luminescence imaging of sentinel lymph nodes
Auteurs : Renata Madru [Suède] ; Thuy A. Tran [Suède] ; Johan Axelsson [Suède] ; Christian Ingvar [Suède] ; Adnan Bibic [Suède] ; Freddy St Hlberg [Suède] ; Linda Knutsson [Suède] ; Sven-Erik Strand [Suède]Source :
- American Journal of Nuclear Medicine and Molecular Imaging [ 2160-8407 ] ; 2013.
Abstract
The aim of this study was to develop 68Ga-SPIONs for use as a single contrast agent for dynamic, quantitative and high resolution PET/MR imaging of Sentinel Lymph Node (SLN). In addition 68Ga enables Cherenkov light emission which can be used for optical guidance during resection of SLN. SPIONs were labeled with 68Ga in ammonium acetate buffer, pH 5.5. The labeling yield and stability in human serum were determined using instant thin layer chromatography. An amount of 0.07-0.1 mL (~5-10 MBq, 0.13 mg Fe) of 68Ga-SPIONs was subcutaneously injected in the hind paw of rats. The animals were imaged at 0-3 h and 25 h post injection with PET/CT, 9.4 T MR and CCDbased Cherenkov optical systems. A biodistribution study was performed by dissecting and measuring the radioactivity in lymph nodes, kidneys, spleen, liver and the injection site. The labeling yield was 97.3 ± 0.05% after 15 min and the 68Ga-SPIONs were stable in human serum. PET, MR and Cherenkov luminescence imaging clearly visualized the SLN. Biodistribution confirmed a high uptake of the 68Ga-SPIONs within the SLN. We conclude that generator produced 68Ga can be labeled to SPIONs. Subcutaneously injected 68Ga-SPIONs can enhance the identification of the SLNs by combining sensitive PET and high resolution MR imaging. Clinically, hybrid PET/MR cameras are already in use and 68Ga-SPIONs have a great potential as a single-dose, tri-modality agent for diagnostic imaging and potential Cherenkov luminescent guided resection of SLN.
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PubMed: 24380046
PubMed Central: 3867730
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oxide nanoparticles (SPIONs) for multi-modality PET/MR/Cherenkov luminescence imaging of sentinel lymph nodes</title><author><name sortKey="Madru, Renata" sort="Madru, Renata" uniqKey="Madru R" first="Renata" last="Madru">Renata Madru</name><affiliation wicri:level="1"><nlm:aff id="au1"><institution>Department of Medical Radiation Physics, Lund University</institution><addr-line>Lund, Sweden</addr-line></nlm:aff><country xml:lang="fr">Suède</country><wicri:regionArea>Lund</wicri:regionArea></affiliation></author><author><name sortKey="Tran, Thuy A" sort="Tran, Thuy A" uniqKey="Tran T" first="Thuy A" last="Tran">Thuy A. 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In addition <sup>68</sup>Ga enables Cherenkov light emission which can be used for optical guidance during resection of SLN. SPIONs were labeled with <sup>68</sup>Ga in ammonium acetate buffer, pH 5.5. The labeling yield and stability in human serum were determined using instant thin layer chromatography. An amount of 0.07-0.1 mL (~5-10 MBq, 0.13 mg Fe) of <sup>68</sup>Ga-SPIONs was subcutaneously injected in the hind paw of rats. The animals were imaged at 0-3 h and 25 h post injection with PET/CT, 9.4 T MR and CCDbased Cherenkov optical systems. A biodistribution study was performed by dissecting and measuring the radioactivity in lymph nodes, kidneys, spleen, liver and the injection site. The labeling yield was 97.3 ± 0.05% after 15 min and the <sup>68</sup>Ga-SPIONs were stable in human serum. PET, MR and Cherenkov luminescence imaging clearly visualized the SLN. Biodistribution confirmed a high uptake of the <sup>68</sup>Ga-SPIONs within the SLN. We conclude that generator produced <sup>68</sup>Ga can be labeled to SPIONs. Subcutaneously injected <sup>68</sup>Ga-SPIONs can enhance the identification of the SLNs by combining sensitive PET and high resolution MR imaging. Clinically, hybrid PET/MR cameras are already in use and <sup>68</sup>Ga-SPIONs have a great potential as a single-dose, tri-modality agent for diagnostic imaging and potential Cherenkov luminescent guided resection of SLN.</p></div></front></TEI><affiliations><list><country><li>Suède</li></country></list><tree><country name="Suède"><noRegion><name sortKey="Madru, Renata" sort="Madru, Renata" uniqKey="Madru R" first="Renata" last="Madru">Renata Madru</name></noRegion><name sortKey="Axelsson, Johan" sort="Axelsson, Johan" uniqKey="Axelsson J" first="Johan" last="Axelsson">Johan Axelsson</name><name sortKey="Bibic, Adnan" sort="Bibic, Adnan" uniqKey="Bibic A" first="Adnan" last="Bibic">Adnan Bibic</name><name sortKey="Ingvar, Christian" sort="Ingvar, Christian" uniqKey="Ingvar C" first="Christian" last="Ingvar">Christian Ingvar</name><name sortKey="Knutsson, Linda" sort="Knutsson, Linda" uniqKey="Knutsson L" first="Linda" last="Knutsson">Linda Knutsson</name><name sortKey="St Hlberg, Freddy" sort="St Hlberg, Freddy" uniqKey="St Hlberg F" first="Freddy" last="St Hlberg">Freddy St Hlberg</name><name sortKey="St Hlberg, Freddy" sort="St Hlberg, Freddy" uniqKey="St Hlberg F" first="Freddy" last="St Hlberg">Freddy St Hlberg</name><name sortKey="St Hlberg, Freddy" sort="St Hlberg, Freddy" uniqKey="St Hlberg F" first="Freddy" last="St Hlberg">Freddy St Hlberg</name><name sortKey="Strand, Sven Erik" sort="Strand, Sven Erik" uniqKey="Strand S" first="Sven-Erik" last="Strand">Sven-Erik Strand</name><name sortKey="Strand, Sven Erik" sort="Strand, Sven Erik" uniqKey="Strand S" first="Sven-Erik" last="Strand">Sven-Erik Strand</name><name sortKey="Tran, Thuy A" sort="Tran, Thuy A" uniqKey="Tran T" first="Thuy A" last="Tran">Thuy A. Tran</name><name sortKey="Tran, Thuy A" sort="Tran, Thuy A" uniqKey="Tran T" first="Thuy A" last="Tran">Thuy A. Tran</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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