1. Articles from Phapanin Charoenphol

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    1. Methylene blue-filled biodegradable polymer particles as a contrast agent for optical coherence tomography

      Methylene blue-filled biodegradable polymer particles as a contrast agent for optical coherence tomography

      Optical coherence tomography (OCT) images largely lack molecular information or molecular contrast. We address that issue here, reporting on the development of biodegradable micro and nano-spheres loaded with methylene blue (MB) as molecular contrast agents for OCT. MB is a constituent of FDA approved therapies and widely used as a dye in off-label clinical applications. The sequestration of MB within the polymer reduced toxicity and improved signal strength by drastically reducing the production of singlet oxygen and leuco-MB. The former leads to tissue damage and the latter to reduced image contrast. The spheres are also strongly scattering which improves molecular ...

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    1. (1 articles) Texas A&M University
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