散斑方差OCT(svOCT)成像是近年来发展起来的一种用于微血管探测的功能OCT成像手段。通常活体组织的血管结构都是通过血流的多普勒OCT进行重构的,但是传统的多普勒OCT流速图像存在两大缺点,一是对血流的横向分量不敏感,可能造成某些血管的漏判;二是受系统的相位稳定性影响很大,系统中的机电部件如振镜、多角棱镜等的 Speckle variance OCT (svOCT) imaging has been developed in recent years as a functional OCT imaging method for microvascular exploration. Vascular structures of living tissue are usually reconstructed by Doppler OCT of the bloodstream, but there are two major drawbacks with the traditional Doppler OCT flow image, one that is insensitive to the lateral components of blood flow and may cause some Second, by the system’s phase stability is greatly affected, the system’s mechanical and electrical components such as galvanometer, polygonal prism