报告题目:Deep tissue imaging
报 告 人:Ke Si(斯科), Ph.D.
Research Associate
Janelia Farm Research Campus,
Howard Hughes Medical Institute
Ashburn, VA, USA, 20147
报告时间:2013年9月27日(周五) 上午10:00-11:00
报告地点:医学院科研楼B502会议室
联 系 人:孙秉贵(88981753)
报告摘要:
Fluorescence imaging has revolutionized biomedical research over the past three decades. Its high molecular specificity and unrivaled single molecule level sensitivity have enabled breakthroughs in a variety of research fields. For in vivo applications, its major limitation is the superficial imaging depth as random scattering in biological tissues causes exponential attenuation of the ballistic component of a light wave. Here we present two technologies to achieve deep tissue imaging. One is the iterative wavefront compensation technique that takes advantage of the nonlinearity of multiphoton signals to determine and compensate for wavefront distortions and to focus light inside deep tissues. The other is ultrasound-pulse-guided digital phase conjugation technique which achieves fluorescence imaging beyond the ballistic regime (published in Nature Photonics). These technologies pave the wave for many important applications in both fundamental biology research and clinical studies.