Real-time optical imaging using quantum dot and related nanocrystals.

Real-time optical imaging using quantum dot and related nanocrystals.
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DOI:
10.2217/nnm.10.49
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发表时间:
2010-07
期刊:
Nanomedicine (London, England)
影响因子:
--
通讯作者:
Kobayashi H
Kobayashi H
中科院分区:
其他
文献类型:
--
作者:
Kosaka N;McCann TE;Mitsunaga M;Choyke PL;Kobayashi H

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生物医学光学成像由于其快速帧率、高灵敏度、低成本、便携性和无辐射等理想特征而迅速发展。量子点由于其高亮度、光稳定性和生物稳定性而作为成像剂具有吸引力。本文综述了量子点在体外和体内实时光学成像的研究现状。此外,我们考虑了基于固态半导体的相关纳米晶体,包括上转换纳米颗粒和生物发光共振能量转移量子点。这些粒子可以通过抑制背景信号来提高实时成像的信号与背景比。尽管量子点及其近亲的毒性和生物分布仍然是转化为人类成像的主要问题,但这些试剂具有许多理想的特征,应用于医学目的。
Biomedical optical imaging is rapidly evolving because of its desirable features of rapid frame rates, high sensitivity, low cost, portability and lack of radiation. Quantum dots are attractive as imaging agents owing to their high brightness, and photo- and bio-stability. Here, the current status of in vitro and in vivo real-time optical imaging with quantum dots is reviewed. In addition, we consider related nanocrystals based on solid-state semiconductors, including upconverting nanoparticles and bioluminescence resonance energy transfer quantum dots. These particles can improve the signal-to-background ratio for real-time imaging largely by suppressing background signal. Although toxicity and biodistribution of quantum dots and their close relatives remain prime concerns for translation to human imaging, these agents have many desirable features that should be explored for medical purposes.
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