Abstract
The development of imaging technique to visualize and quantify the structural alteration of the spinal cord injury (SCI) may lead to better understanding and treatments of the injuries. In this work, multiphoton microscopy (MPM) based on two-photon excited fluorescence (TPEF) and second-harmonic generation (SHG) was tentatively applied to quantitatively visualize the cellular microstructures of SCI to demonstrate the feasibility and superiority of MPM in SCI imaging. High-contrast MPM images of normal and injured spinal cord tissue were obtained for comparison. Moreover, the changes of injured spinal cord were characterized by the quantitative analysis of the MPM images. These results showed that MPM combined with quantitative method has the ability to identify the characteristics of spinal cord injury including the changes in the contents of nerve fibers and extracellular matrix. With the advancement of MPM, we believe that this technique has great potential to provide the histological diagnosis for the monitoring and evaluation of SCI.
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