软X射线纳米CT综述

Soft X-ray nano-CT is a powerful tool to detect subcellular organelles. Photons within "water window" region are absorbed an order of magnitude more strongly by proteins etc. carbon-rich organic material than by water. This special nature also allowed cells to be imaged without chemical dehydration or staining. The only step required to prepare samples is plunging the sample into cryogenic liquid nitrogen for vitrification, which could maintain the structural as the alive cell. In recent years, the soft X-ray nano CT have been widely used for cells, viruses, pharmaceutical and other fields imaging. Its associated equipment attracts more and more attention and considerable progress has been made. This paper will give an overview of soft X-ray tomography and its applications.