摘要
美国斯坦福大学的科学家开发出一种荧光成像技术，能够使活体动物血管脉动以前所未有的清晰度呈现。与传统的影像技术相比．其增加的清晰度类似于擦拭掉眼镜前的迷雾一般。该研究结果发表在最新一期的《自然医学》杂志在线版上。该技术被称为近红外一ll成像．或NIR-II。研究人员首先将水溶性碳纳米管注射到活体的血液中．然后用激光照射要观察的对象．如小白鼠。
Stanford scientists have developed a fluorescence imaging technique that allows them to view the pu^sing blood vessels of living animals with unprecedented clarity. Compared with conventional imaging techniques, the increase in sharpness is akin to wiping fog off your glasses. The technique, called near infrared-II imaging, or NIR-II, involves first injecting water-soluble carbon nanotubes into the living subject＇s bloodstream. The researchers then shine a laser （its light is in the near-infrared range, a wavelength of about 0.8 micron） over the subject; in this case, a mouse.The light causes the specially designed nanotubes to fluoresce at a longer wavelength of 1-1.4 microns, which is then detected to determine the blood vessels＇ structure.
出处
《中国科技信息》
2013年第1期2-2,共1页
China Science and Technology Information
