动态散射方法抑制OCT成像中的散斑噪声与像差

Speckle noise and aberrations limit high-resolution optical imaging by obscuring the fine detail in an image. Speckle is linked to the use of spatially coherent light — without coherence, speckle disappears. But, so does the ability to perform interferometric imaging techniques like OCT, which uses coherence to select photons that carry structural information. A newly developed approach to improving OCT image resolution uses optical elements that suppress speckle and reduce sensitivity to low-order aberrations through controlled spatial-coherence modulation. To determine whether controlled changes in light scattering could reduce speckle noise and make images less prone to aberrations, researchers at the International...