Use of nonlinear upconverting nanoparticles provides increased spatial resolution in fluorescence diffuse imaging

作者：Svenmarker Pontus^*; Xu Can T; Andersson Engels Stefan

来源：Optics Letters, 2010, 35(16): 2789-2791.

Fluorescence diffuse imaging (FDI) suffers from limited spatial resolution. In this Letter, we report a scanning imaging approach to increase the resolution of FDI using nonlinear fluorophores. The resolution of a linear fluorophore was compared with nonlinear upconverting nanoparticles (NaYF(4):Yb(3+)/Tm(3+)) in a tissue phantom. A resolution improvement of a factor of 1.3 was found experimentally. Simulations suggested a maximum resolution improvement of a factor of 1.45. Usage of nonlinear fluorophores is a promising method for increasing the spatial resolution in FDI.

• 出版日期2010-8-15