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Image contrast assessment of metal-based nanoparticles as applications for image-guided radiation therapy.


ABSTRACT: Metal-based nanoparticles (NPs) have been extensively studied for dose enhancement applications in radiation therapy. This study investigated the utility of such NPs for image-guided radiation therapy (IGRT). Phantom images of gold NPs (AuNPs) and titanium peroxide NPs (TiOxNPs) with different concentrations were acquired using IGRT modalities, including cone-beam computed tomography (CBCT). AuNPs induced strong contrast enhancement in kV energy CBCT images, whereas TiOxNPs at high concentrations showed weak but detectable changes. The results indicated that these NPs can be used to enhance IGRT images as well as dose enhancement for treatment purposes.

SUBMITTER: Nakayama M 

PROVIDER: S-EPMC8626564 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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Image contrast assessment of metal-based nanoparticles as applications for image-guided radiation therapy.

Nakayama Masao M   Akasaka Hiroaki H   Miyazaki Eiichi E   Goto Yoshihiro Y   Oki Yuya Y   Kawate Yosuke Y   Morita Kenta K   Sasaki Ryohei R  

Physics and imaging in radiation oncology 20211001


Metal-based nanoparticles (NPs) have been extensively studied for dose enhancement applications in radiation therapy. This study investigated the utility of such NPs for image-guided radiation therapy (IGRT). Phantom images of gold NPs (AuNPs) and titanium peroxide NPs (TiOxNPs) with different concentrations were acquired using IGRT modalities, including cone-beam computed tomography (CBCT). AuNPs induced strong contrast enhancement in kV energy CBCT images, whereas TiOxNPs at high concentration  ...[more]

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