摘要
Photoacoustic imaging(PAI)is an emerging whole-body imaging modality offering high spatial resolution,deep penetration and high contrast in vivo.Signals for PAI are generated from contrast agents,where the laser-gen-erated optical energy is transferred to acoustic emissions and detected by an ultrasound transducer.A great deal of research over the past ten years has shown that near-infrared absorption nanomaterials such as organic dye-based nanoparticals,polymer-based nanoparticles,carbon-based nanomaterials and metallic nanomaterials are promising photoacoustic(PA)contrast agents,which can increase the imaging resolution,contrast and depth of detection.Hence,it is an attractive research field to develop new PA contrast agents.Herein,we reviewed this rapidly grow-ing field and described the applications of nanomaterial-based PA contrast agents for biomedical imaging.Particu-lar focus was given to organic near-infrared absorbing dyes including cyanine,porphyrin and boron-dipyrromethene derivatives.
基金
supported by National Basic Re-search Program of China (973 Program,No.2013CB932701)
National Natural Science Foundation of China (Nos.21374026,21304023,51102014 and 51303036)
Hebei Provincial Natural Science Foundation of China (No.B2014202209)
Beijing Natural Science Foundation (No.2132053)
the 100-Talent Program of the Chinese Academy of Sciences (No.Y2462911ZX).