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金纳米笼作为光声成像的对比剂。

Gold nanocages as contrast agents for photoacoustic imaging.

机构信息

Department of Biomedical Engineering, Washington University in St Louis, MO 63130, USA.

出版信息

Contrast Media Mol Imaging. 2011 Sep-Oct;6(5):370-7. doi: 10.1002/cmmi.439.

Abstract

Gold nanoparticles with tunable absorption and scattering properties have been developed as contrast agents for various optical imaging techniques. As a hybrid modality that combines the merits of both optical and ultrasonic imaging, photoacoustic (PA) imaging also benefits from the use of these nanoparticles to greatly enhance the contrast for visualization of structures and biomarkers in biological tissues. Gold nanocages characterized by hollow interiors, ultrathin and porous walls are of particular interest for in vivo PA imaging because of their compact sizes, bio-inertness and well-defined surface chemistry, as well as their strong and highly wavelength-tunable optical absorption in the near-infrared (NIR) optical window of soft tissues. This review discusses the application of gold nanocages as a new class of contrast agents for PA imaging in the context of cancer diagnosis.

摘要

金纳米笼具有可调的吸收和散射特性,已被开发为各种光学成像技术的对比剂。光声(PA)成像是一种结合了光学和超声成像优点的混合模态,也受益于使用这些纳米颗粒来大大增强生物组织中结构和生物标志物的可视化对比度。金纳米笼具有空心内部、超薄多孔壁的特点,由于其紧凑的尺寸、生物惰性和明确的表面化学性质,以及在软组织近红外(NIR)光学窗口中具有强烈且高度波长可调的光吸收,因此特别适用于体内 PA 成像。本文综述了金纳米笼作为一种新型对比剂在癌症诊断中的 PA 成像应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/05f1/6942690/82c23e974c80/nihms-1063551-f0001.jpg

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